2024-03-28T08:27:21Zhttps://elib.belstu.by/oai/requestoai:elib.belstu.by:123456789/146012020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Synthesis and properties of mixed iron and bismuth vanadates
Zharski, I. M.
Opimakh, O. V.
Kurilo, I. I.
Galkovskiy, T. V.
ванадаты железа
ванадаты висмута
смешанные ванадаты
сольвотермический синтез
ингибирующие свойства
The solvothermal method for the synthesis of mixed iron and bismuth vanadates was proposed. Physicochemical properties of the obtained samples: oil absorption, pH of the aqueous extract, particle size, density, – were determined. Electrochemical studies ofthe inhibitory properties of vanadates relative to the steel substrate were conducted. It is established that the received mixed iron and bismuth vanadates may be used in the paint industry as a replacement for lead-bearing and chromate pigments.
2017-03-17T12:24:45Z
2017-03-17T12:24:45Z
2014
Article
Synthesis and properties of mixed iron and bismuth vanadates / I. M. Zharski [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 27-30
https://elib.belstu.by/handle/123456789/14601
621.357.7
en
BSTU
oai:elib.belstu.by:123456789/145982020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Crystal structure and physical and chemical properties of Bi[1–x]Nd[x]Fe[1–x]Co[x]O[3] solid solution
Zatsiupa, A. A.
Bashkirov, L. A.
Petrov, G.S.
Galyas, A. I.
Velikanova, I. A.
твердые растворы
кристаллическая структура
магнитные свойства
ферриты
Solid solutions of the (1 – x)BiFeO[3]– [x]NdCoO[3] system were synthesized by a solid-state reactions method. Peculiarities of the influence of isovalent substitution in BiFeO[3]of Bi {3+} , Fe{3+} ions by Nd {3+}, Со{3+} ions on the crystal structure, magnetization and thermal expansion of the forming solid solutions Bi[1-x]Nd[x]Fe[1-x]Co[x O[3] are fixed. It is shown that the substitution up to 2% of Bi{3+}, Fe{3+} ions in BiFeO[3] by Nd{3+}, Со{3+} ions leads only to the partial destruction of the antiferromagnetic ordering of the Fe{3+} ions magnetic moments. According to the results of the magnetic properties investigation it is found that magnetic properties of the samples Bi[1-x]Nd[x]Fe[1-x]Co[x]O[3](0.05 ≤ х ≤ 0.15) are due to the coexistence of the antiferromagnetic and ferromagnetic phases but the samples Bi[1-x]Nd[x]Fe[1-x]Co[x]O[3](0.80 ≤ х ≤ 1.0) reveal paramagnetic properties.
2017-03-17T12:24:43Z
2017-03-17T12:24:43Z
2014
Article
Crystal structure and physical and chemical properties of Bi[1–x]Nd[x]Fe[1–x]Co[x]O[3] solid solution / A. A. Zatsiupa [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 14-18
https://elib.belstu.by/handle/123456789/14598
537.622
en
BSTU
oai:elib.belstu.by:123456789/146082020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Reagent precipitation of hardness ions by carbonate-containing builders
Sumich, A.I.
Eshchenko, L. S.
Alekseyev, A. D.
Fedorova, O. Yu.
карбонат натрия
карбонатсодержащие композиции
солевые композиции
жесткость воды
Phase composition of carbonate containing builders obtained by neutralization of proton containing reagents with sodium carbonate is investigated. Itis shown that the builders are a mixture consisting mainly of Na[2]CO[3] · NaHCO[3] · 2H[2]O, Na[2]CO[3] · H[2]O and salts of the corresponding acids. The mixture is able to reduce total water hardness with 3.9 to 1.6–1.7 mmol-eq·l{ -1}. It is found that the builders containing Na[2]CO[3] · NaHCO[3] · 2H[2]O, Na[2]CO[3] · H[2]O and CH[3]COONa · 3H[2]O remove hardness as well as Na[2]CO[3], Na[3]PO[4] ·12H[2]O and STPP at the same flow rate.
2017-03-17T12:24:49Z
2017-03-17T12:24:49Z
2014
Article
Reagent precipitation of hardness ions by carbonate-containing builders / A.I. Sumich [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 55-58
https://elib.belstu.by/handle/123456789/14608
661.185.6:543.32
en
BSTU
oai:elib.belstu.by:123456789/146092020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Development and industrial testing of cased glass compositions for crystal products
Tereshchenko, I. M.
Kravchuk, A. P.
Stetskevich, A. Yu.
хрустальные изделия
изделия из хрусталя
накладное стекло
стекло накладное
производство стекла
On the basis of fusibility coefficient calculation, study of temperature coefficient of linear expansion and crystallization ability optimized compositions for synthesis of cased glass with completely removed PbO, what lowers material costs, improves working conditions and reduces emissions of lead compounds in the production of overhead crystal products were developed. Simultaneously, the problem of waste products utilization was solved.
2017-03-17T12:24:50Z
2017-03-17T12:24:50Z
2014
Article
Tereshchenko, I. M. Development and industrial testing of cased glass compositions for crystal products / I. M. Tereshchenko, A. P. Kravchuk, A. Yu. Stetskevich // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 59-62
https://elib.belstu.by/handle/123456789/14609
666.21:666.112.43
en
BSTU
oai:elib.belstu.by:123456789/146062020-10-21T09:43:57Zcom_123456789_20513com_123456789_118col_123456789_20517
Synthesis, magnetic and luminescent properties of Nd[1–x]La[x]GaO[3] (0.7 ≤ х ≤ 1.0) solid solutions
Kandidatova, I. N.
Bashkirov, L. A.
Lobanovskiy, L. S.
Trukhanov, S. V.
Pershukevich, P. P.
твердые растворы
магнитные свойства
люминесцентные свойства
парамагнетики
Nd[1–x]La[x]GaO[3] (0.7 < х < 1.0) solid solutions were synthesized by the ceramic method, their crystal structure, magnetic and luminescent properties were investigated. The solid solutions investigated behave as paramagnetics in temperature region of 5–300 K. Calculated values of Nd{3+} ion effective magnetic moment in solid solutions investigated are lower than theoretical. There probably exists „partial freezing” of orbital moment of Nd{3+} ions by the crystal field of the orthorhombically distorted perovskite structure of Nd[1–x]La[x]GaO[3] gallates. It is shown that Nd[0.1]La[0.9]GaO[3] is an efficient phosphor with IR-emission, so it is prospective for use in IR-LEDs.
2017-03-17T12:24:48Z
2017-03-17T12:24:48Z
2014
Article
Synthesis, magnetic and luminescent properties of Nd[1–x]La[x]GaO[3] (0.7 ≤ х ≤ 1.0) solid solutions / I. N. Kandidatova [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 47-50
https://elib.belstu.by/handle/123456789/14606
546.736.442.6+537.621.4+666.265
en
BSTU
oai:elib.belstu.by:123456789/146072020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Composition and properties study of galvanic sludge heat treatment products
Eshchenko, L. S.
Zhuk, G. M.
Tzukhay, A. A.
гальванические производства
термообработка шламов
очистка сточных вод
жидкое стекло
гальваношламы
гальванические отходы
The results of investigations of chemical and phase composition and dispersity of precipitates formed in wastewater treatment of galvanic enterprises of the Republic of Belarus are presented. Conditions of modifying precipitates by liquid glass and effect of temperature on phase composition and colors of heat treatment products are investigated. Paint-technical properties of heattreatment products dependence on sludge/liquid glass ratio and heating temperature is shown. Increased opacityand color purity and reduced oil absorption are established. This is due to the change in dispersity of the sludge in the process of liquid glass modifying.
2017-03-17T12:24:49Z
2017-03-17T12:24:49Z
2014
Article
Eshchenko, L. S. Composition and properties study of galvanic sludge heat treatment products / L. S. Eshchenko, G. M. Zhuk, A. A. Tzukhay // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 51-54
https://elib.belstu.by/handle/123456789/14607
667.628.117
en
BSTU
oai:elib.belstu.by:123456789/145972020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
About the causes of deactivation of the nickel catalyst methane conversion in the course of its operation
Eshchenko, L. S.
Gavrilyuk, A. N.
никелевые катализаторы
футеровочные материалы
шахтные реакторы
реакторы шахтные
The results of studies of the chemical, phase composition, and structure of the samples of lining materials, and conversion catalysts of natural gas used in the mine unit are outlined. Possible mechanism of nickel ablation from catalyst that caused the reduction of the specific active surface of the catalyst and consequently its activity is described.
2017-03-17T12:24:42Z
2017-03-17T12:24:42Z
2014
Article
Eshchenko, L. S. About the causes of deactivation of the nickel catalyst methane conversion in the course of its operation / L. S. Eshchenko, A. N. Gavrilyuk // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 10-13
https://elib.belstu.by/handle/123456789/14597
66.097.3:661.531
en
BSTU
oai:elib.belstu.by:123456789/145952020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Hydroxocomplexes in the system Fe{3+} – Cu {2+} – NO[3]{–} – H[2]O
Sokolovskiy, А. E.
Radion, E. V.
гидроксокомплексообразование
гидрокомплексы
потенциометрическое титрование
диализ
The hydrolysis processes in the system Fe{3+} – Cu {2+} – NO[3]{–} – H[2]O have been investigated by potentiometric titration and dialysis methods. The experiment data have been obtained under the following conditions: metal ions concentration – 0,01 mol/l, molar ratio Fe{3+}:Cu{2+} = 1 : 1, ionic strength – 0.3 mol/l (NaNO[3]), temperature – (25 ±0.1)°С, pH-range – 1.5–2.4. The distribution of different Fe (III) and Cu (II) forms upon pH value has been calculated upon experimental data. It has been established that Fe (III) and Cu (II) form heteropolynuclear hydroxocomplexes.
2017-03-17T12:24:41Z
2017-03-17T12:24:41Z
2014
Article
Sokolovskiy, А. E. Hydroxocomplexes in the system Fe{3+} – Cu {2+} – NO[3]{–} – H[2]O / А. E. Sokolovskiy, E. V. Radion // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 3-5
https://elib.belstu.by/handle/123456789/14595
541.49:546.723:546.562
en
BSTU
oai:elib.belstu.by:123456789/146022020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
The use of basalts and tuffs as ceramic materials for interior wall facing tiles
Levitskiy, I. A.
Barantseva, S. E.
Pozniak, A. I.
базальты
туфы
керамические массы
спекание керамики
керамическая плитка
The results of study of chemical and mineralogical composition and technological properties of basalts and tuffs, explored on the territory of the Republic of Belarus are presented, and the possibility of their use as components of ceramic materials for interior wall facing tiles is established. The criterion of intensification of the sintering process of raw compositions, expressed by ratio of oxides (SiO[2]+ Al[2]O[3]) / (Fe[2]O[3]+ FeO + Na[2]O + K[2]O), is defined and the limits of its values is set, at which open porosity of the tiles reduce to 16.0–21.5%, mechanical flexural strength up to 35.0–36.5 MPa, water absorption value is 13.2–9.8%, shrinkage – 1.2–1.3%, thermal coefficient of linearexpansion (TCLE) – (6.87–7.05) · 10{–6} K{ –1}.
2017-03-17T12:24:45Z
2017-03-17T12:24:45Z
2014
Article
Levitskiy, I. A. The use of basalts and tuffs as ceramic materials for interior wall facing tiles / I. A. Levitskiy, S. E. Barantseva, A. I. Pozniak // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 31-36
https://elib.belstu.by/handle/123456789/14602
666.615
552.11
en
BSTU
oai:elib.belstu.by:123456789/146172020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Influence of technological parameters of the dynamic separator of a bowl roller mill on energy costs
Dorogokupets, A. S.
Frantskevich, V. S.
динамические сепараторы
мельницы среднеходные
помольные агрегаты
среднеходные мельницы
энергозатраты
In the process of operation of technological equipment, which uses a gaseous medium as a transporting agent, a decisive influence on the specific energy consumption has a drag machine. For the analysis of drag equipment modeled grinding unit in conjunction with a dynamic classifier and analytical studies are conducted in the software package ANSYSCFX with the construction of the graphanalytical relationships.
2017-03-17T12:24:56Z
2017-03-17T12:24:56Z
2014
Article
Dorogokupets, A. S. Influence of technological parameters of the dynamic separator of a bowl roller mill on energy costs / A. S. Dorogokupets, V. S. Frantskevich // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 94-98
https://elib.belstu.by/handle/123456789/14617
621.926
en
BSTU
oai:elib.belstu.by:123456789/146112020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Resistance management and structural-rheological properties of the suspended liquid complex fertilizers based on activated ground phosphate rock
Mozheyko, F. F.
Potkina, T. N.
Goncharik, I. I.
Gotto, Z. A.
жидкие комплексные удобрения
суспендированные удобрения
фосфориты
флотационное обогащение
фосфоритная мука
At flotation Belarusian phosphate, along with high-quality flotation concentrate, the high-stable suspension with good structural and rheological properties formed in dewatering process of the fine fractions. The results of obtaining of different brands suspended liquid complex fertilizes with a broad content of useful substances on the basis of phosphate slurry and monoammonium phosphate, potash and nitrogen fertilizers are presented. The ways ofregulating the physicochemical and structural and rheological properties of their suspensions are investigated.
2017-03-17T12:24:51Z
2017-03-17T12:24:51Z
2014
Article
Resistance management and structural-rheological properties of the suspended liquid complex fertilizers based on activated ground phosphate rock / F. F. Mozheyko [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 69-74
https://elib.belstu.by/handle/123456789/14611
631.812.2:661.85
en
BSTU
oai:elib.belstu.by:123456789/146152020-10-21T09:43:57Zcom_123456789_20513com_123456789_118col_123456789_20517
Computer methods of the analysis of thermo-technical characteristics of heat exchanger-cooler of the “pipe-in-pipe” type
Andrizhievskiy, A. А.
Trifonov, A. G.
теплообменники двухтрубные
теплообменники типа "труба в трубе"
охладители
теплотехнические характеристики
In the given work we describe the results of the application of modern computational tools to analyze the thermal performance of the heat exchanger of the “pipe in pipe” type in which in the inner tube refrigerant is circulating – a 50% aqueous solution of propylene glycol, and in the ring backlash – the coolant (water). Thus, on the heat exchange surfaces ofpipes variable (both in time and length) layers of deposits of organic and inorganic origin. This article discusses only the deposits on the surfaces in contact with the coolant.
2017-03-17T12:24:54Z
2017-03-17T12:24:54Z
2014
Article
Аndrizhievskiy, A. А. Computer methods of the analysis of thermo-technical characteristics of heat exchanger-cooler of the “pipe-in-pipe” type / A. А. Аndrizhievskiy, A. G. Trifonov // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 87-90
https://elib.belstu.by/handle/123456789/14615
621.5:519.6
en
BSTU
oai:elib.belstu.by:123456789/145992020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Crystal structure and magnetic properties of highly-coercive Sr[1–x]Gd[x]Fe[12–x]Zn[x]O[19] ferrites
Wu Ze
Bashkirov, L. A.
Slonskaya, S. V.
Trukhanov, S. V.
Lobanovskiy, L. S.
Galyas, A. I.
ферриты
кристаллическая структура
магнитные свойства
ферримагнетики
High-coercivity ferrite samples Sr[1–x]Gd[x]Fe[12–x]Zn[x]O]19] (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) with magnetoplumbite structure were prepared from oxides Fe[2]O[3], Gd[2]O[3], ZnO and carbonate SrCO[3] by solid-state ceramic method, the dependence of the unit cell parameters aand con the value of xwas determined. XRD showed that the samples with x >0.1 were not single-phase, and the samples with x > 0.2 contained not only bases phase with the structure of magnetplumbite, but also the a-Fe[2]O[3] and Gd[3]Fe[5]O[12] phases. It was found that increase of the xvalue leads to a slight decrease in the Curie temperature (from 727 K for the basic ferrite SrFe[12]O[19] to 714 K for Sr[1–x]Gd[x]Fe[12–x]Zn[x]O[19] solid solution with x = 0.5). It has been found that at 300 K values of spontaneous magnetization (no) and coercive force (?Hc) of solid solution Sr[0.9]Gd[0.1]Fe[11.9]Zn[0.1]O[19] are respectively 1.3 and 2.3% higher than for the base ferrite SrFe[12]O[19], and values of samples with x > 0.1 of these magnetic properties decreases gradually.
2017-03-17T12:24:43Z
2017-03-17T12:24:43Z
2014
Article
Crystal structure and magnetic properties of highly-coercive Sr[1–x]Gd[x]Fe[12–x]Zn[x]O[19] ferrites / Wu Ze [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 19-23
https://elib.belstu.by/handle/123456789/14599
541.124+546.431
en
BSTU
oai:elib.belstu.by:123456789/146132020-10-21T09:43:57Zcom_123456789_20513com_123456789_118col_123456789_20517
Analysis of processes of aerosol particle transfer and deposition on character surfaces of infrastructure NPP
Andrizhievskiy, A. A.
Trifonov, A. G.
Kulik, L. S.
выбросы загрязняющих веществ
осаждение радиоактивных веществ
аэрозольные частицы
атомные электростанции
The developed model of calculation of dynamics of distribution of waste substance emission in emergency situations is presented in this article. An assessment of the mechanisms of the deposition of radioactive substances on the characteristic surfaces of the NPP in emergency situations is made. The areas of preferential deposition of waste aerosols on the characteristic surfaces infrastructure for NPP are defined as a result of numerical simulation.
2017-03-17T12:24:53Z
2017-03-17T12:24:53Z
2014
Article
Andrizhievskiy, A. A. Analysis of processes of aerosol particle transfer and deposition on character surfaces of infrastructure NPP / A. A. Andrizhievskiy, A. G. Trifonov, L. S. Kulik // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 79-82
https://elib.belstu.by/handle/123456789/14613
621.5:519.6
en
BSTU
oai:elib.belstu.by:123456789/146182020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Influence of ground heat source parameters and consumer on characteristics of geothermal heat pump system
Filatov, S. A.
Volodin, V. I.
теплонасосные системы
теплоснабжение
теплота грунта
Features of heat supply system based on the use of ground are investigated with the help of the method of numerical simulation. The variables are the parameters characterizing the heat source and the consumer: the average temperature ofthe soil, the area and the radiative properties of the surface heating panels, air temperature of heated space. It was found that the maximum energy efficiency of the system is achieved by using a low-temperature floor heating system.
2017-03-17T12:24:56Z
2017-03-17T12:24:56Z
2014
Article
Filatov, S. A. Influence of ground heat source parameters and consumer on characteristics of geothermal heat pump system / S. A. Filatov, V. I. Volodin // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 99-104
https://elib.belstu.by/handle/123456789/14618
621.577
en
BSTU
oai:elib.belstu.by:123456789/146042020-10-21T09:43:57Zcom_123456789_20513com_123456789_118col_123456789_20517
Carbon steels corrosion resistance to disinfectants
Romanovskiy, V. I.
Chaika, Yu. N.
хлорсодержащие растворы
дезинфицирующие растворы
коррозионная активность
углеродистые стали
The paper presents comparative analysis of the corrosion activity ofchlorine bleach and a saturated solution of ozone in water to carbon steels by gravimetric method. Studies were carried out on low carbon steel St37-3 and Ct20 brands. Established that the most corrosion activity of test solutions has saturated solution of ozone in water among chlorine disinfectants – sodium hypochlorite.
2017-03-17T12:24:47Z
2017-03-17T12:24:47Z
2014
Article
Romanovskiy, V. I. Carbon steels corrosion resistance to disinfectants / V. I. Romanovskiy, Yu. N. Chaika // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 40-43
https://elib.belstu.by/handle/123456789/14604
628.162
en
BSTU
oai:elib.belstu.by:123456789/146162020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
The model of material movement in the rotor accelerator of the centrifugal impact crusher
Vaitekhovich, P. E.
Grebenchuk, P. S.
Tabolich, А. V.
центробежно-ударные дробилки
движение частиц
измельчающие агрегаты
The features of the use of grinding units producedby the SPA “Center” and possible approaches to their calculation are analyzed. The mathematical description of the motion of individual particles of the crushed material in the rotor accelerator of the centrifugal impact crusher is developed. The mathematical model of particle motion along a curved blade on a rotating flat disc, which allows to determine the trajectory of the particles, the magnitude and direction of the full speed at any point on the blade is presented. A graph of full speed and the relative velocity of the particles along the blade, as well as the separation angle, which determines the direction of full speed, the angular speed ofthe rotor are obtained. The change of the complete particle velocity depending on the position of the rotor is analyzed. It is shown that to change effectively the direction of emission of particles from the rotor can be possible only changing its design parameters and parameters of the crusher.
2017-03-17T12:24:55Z
2017-03-17T12:24:55Z
2014
Article
Vaitekhovich, P. E. The model of material movement in the rotor accelerator of the centrifugal impact crusher / P. E. Vaitekhovich, P. S. Grebenchuk, А. V. Tabolich // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 91-93
https://elib.belstu.by/handle/123456789/14616
621.926
en
BSTU
oai:elib.belstu.by:123456789/146002020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Methods for processing ash residues of TPS vanadium containing slurry
Zharski, I. M.
Kurilo, I. I.
Kryshilovich, E. V.
Kharitonov, D. S.
промышленные отходы
ванадийсодержащие отходы
ванадийсодержащие продукты
переработка отходов
Application of vanadium industrial waste complex processing provides the decision of two main tasks: expanding the raw material base for extremely scarce metal and reduction of an environmental impact on nature. Combined and hydrometallurgical methods of vanadium extraction from the ash residues of TPS vanadium sludge have been developed. These methods allow to extract up to 95% of vanadium that contains in waste, and to obtain a vanadium product suitable for using in different areas of industry.
2017-03-17T12:24:44Z
2017-03-17T12:24:44Z
2014
Article
Methods for processing ash residues of TPS vanadium containing slurry / I. M. Zharski [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 23-26
https://elib.belstu.by/handle/123456789/14600
66.097.3
en
BSTU
oai:elib.belstu.by:123456789/146032020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Synthesis of BiFeO[3] multiferroic from Bi[25]FeO[39] precursor and Fe[2]O[3] oxide
Zatsiupa, А. А.
Bashkirov, L. A.
Shichkova, T. A.
Emello, G. G.
сегнетомагнетики
термообработка
кристаллическая структура
прекурсоры
оксид висмута
оксид железа
The ceramic method of synthesis of BiFeO[3] multiferroic from Bi[25]FeO[39] precursor and Fe[2]O[3] oxide was developed. Influence of various modes of heat treatment on crystal structure of BiFeO3is studied and the optimum conditions of synthesis are chosen. The method offered allows to reduce synthesis temperature and time in comparison with ceramic method of BiFeO3synthesis from Bi[2]O[3] and Fe[2]O[3] oxides, and also allows to reduce the quantity of impurity phases from 5 to 3%.
2017-03-17T12:24:46Z
2017-03-17T12:24:46Z
2014
Article
Synthesis of BiFeO[3] multiferroic from Bi[25]FeO[39] precursor and Fe[2]O[3] oxide / А. А. Zatsiupa [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 37-39
https://elib.belstu.by/handle/123456789/14603
537.622
en
BSTU
oai:elib.belstu.by:123456789/145962020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Crystal structure and physicochemical properties of the Bi[1–x]Nd[x]Fe[1–x]Mn[x]O[3] multiferroics solid solutions
Chizhova, E. A.
Klyndyuk, A. I.
Brushko, N. V.
Maz’ko, A. S.
ферриты
твердые растворы
кристаллическая структура
физико-химические свойства
The ceramic samples of the Bi[1–x]Nd[x]Fe[1–x]Mn[x]O[3](0.0 < x ≤ 0.21) ferrites solid solutions using solidstate reactions method were prepared and their crystal structure, thermal expansion, electrical conductivity and thermo-EMF were studied. It was shown that in the samples with 0.06 ≤ x ≤ 0.21 the coexistence of rhombohedrally and orthorhombically distorted perovskite phases were observed. It was found, that Bi[1–x]Nd[x]Fe[1–x]Mn[x]O[3] oxides were the p-type semiconductors which electrical conductivity values increased but thermo-EMF coefficient ones slightly changed at xincreasing.
2017-03-17T12:24:41Z
2017-03-17T12:24:41Z
2014
Article
Crystal structure and physicochemical properties of the Bi[1–x]Nd[x]Fe[1–x]Mn[x]O[3] multiferroics solid solutions / E. A. Chizhova [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 6-9
https://elib.belstu.by/handle/123456789/14596
54-165:544.022+536.413+537.31/32
en
BSTU
oai:elib.belstu.by:123456789/146142020-10-21T09:43:57Zcom_123456789_20513com_123456789_118col_123456789_20517
3D computer model of the developed contact surface of heat exchange of complex configuration
Andrizhievskiy, A. А.
Lukashevich, А. G.
теплообменные устройства
контактные поверхности
3D-моделирование
The method for the describing transport processes on the basis of multifunctional software packages is presented in this work. The proposed method of analysis of thermal parameters of multi-contact heat exchange surfaces is based on the developed computational pattern of software package COMSOL Multiphysics in relation to the actual geometry of industrial heat-exchange surface of the bimetallic sample. The practical application of these model templates enables us to improve the reliability of generalization of test results of heat exchangers and, consequently, reduce the time of their introduction into the market of power equipment.
2017-03-17T12:24:54Z
2017-03-17T12:24:54Z
2014
Article
Аndrizhievskiy, A. А. 3D computer model of the developed contact surface of heat exchange of complex configuration / A. А. Аndrizhievskiy, А. G. Lukashevich // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 83-86
https://elib.belstu.by/handle/123456789/14614
536.2:519.6
en
BSTU
oai:elib.belstu.by:123456789/146192020-10-21T09:43:58Zcom_123456789_20513com_123456789_118col_123456789_20517
Experimental research of regular packing for mass-transfer towers
Misyulya, D. I.
Protasov, S. K.
массообменные аппараты
колонные аппараты
насадки
гидравлическое сопротивление
The article presents a new design of the regular packing for mass-transfer devices. The results of experimental research of pressure drop and efficiency of the developed regular packing are shown. The comparative analysis according to the main characteristics of the developed and existing regular packings is given. The application of this packing will provide rather high efficiencyof mass-transfer (until 96% at desorption CO2) at the pressure drop of the one-meter packing not exceeding 180 Pa.
2017-03-17T12:24:57Z
2017-03-17T12:24:57Z
2014
Article
Misyulya, D. I. Experimental research of regular packing for mass-transfer towers / D. I. Misyulya, S. K. Protasov // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 105-108
https://elib.belstu.by/handle/123456789/14619
66.021.3
en
BSTU
oai:elib.belstu.by:123456789/146122020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Phosphate rock: methods of preparing and application
Mozheyko, F. F.
Goncharik, I. I.
Gotto, Z. A.
Potkina, T. N.
Shevchuk, V. V.
фосфоритная мука
обогащении фосфоритов
физико-химические свойства
агрохимические свойства
The results of research for improving physical-chemical and agrochemical properties of phosphate flour, obtained by phosphate various deposits enrichment, by increasing its grinding fineness, as well as mechanical activation in the presence of various physiologically active substances, also through its partial activation incomplete stoichiometry norm of the hydrochloric and nitric acids are represented.
2017-03-17T12:24:52Z
2017-03-17T12:24:52Z
2014
Article
Phosphate rock: methods of preparing and application / F. F. Mozheyko // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 75-78
https://elib.belstu.by/handle/123456789/14612
622.364:622.765
en
BSTU
oai:elib.belstu.by:123456789/146052020-10-21T09:43:57Zcom_123456789_20513com_123456789_118col_123456789_20517
Precipitation of abrasion resistrant Fe-Ni alloy coatings from sulfate electrolytes
Kubrak, P. B.
Zhylinskiy, V. V.
Chayevskiy, V. V.
износостойкие покрытия
дереворежущий инструмент
сплавы железа
микротвердость покрытий
износ инструмента
The abrasion resistant Fe-Ni alloys were precipitated on the surface of the blades of woodworking tools by electroplating from sulfate electrolyte. The elemental composition and surface morphology of the coatings were studied by energy dispersion X-ray microanalysis and transmission electron microscopy. The microhardness of obtained coating of Fe-Ni alloy has reached 400 HV that is 2 times greater than the microhardness of the substrate. It had been found that coating of Fe-Ni alloy on knife-edge of woodworking tools reduces the wear by 50% ormore compared with the uncoated blades.
2017-03-17T12:24:47Z
2017-03-17T12:24:47Z
2014
Article
Kubrak, P. B. Precipitation of abrasion resistrant Fe-Ni alloy coatings from sulfate electrolytes / P. B. Kubrak, V. V. Zhylinskiy, V. V.Chayevskiy // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 44-46
https://elib.belstu.by/handle/123456789/14605
620.197
en
BSTU
oai:elib.belstu.by:123456789/146102020-10-21T09:43:59Zcom_123456789_20513com_123456789_118col_123456789_20517
Flotation sylvite from potash ores at elevated temperatures
Turko, M. R.
Dormeshkin, O. B.
Miskov, E. M.
Solovyova, L. A.
флотация сильвина
обогащение калийных руд
сильвинитовые руды
калийные удобрения
In laboratory terms conducted research on the selection of factious composition amine and assortment components of collective mixture, optimal for flotation of sylvine at the temperature of fallopian solution 40°С, brands and charges of reagents are certain, are conducted the comparative tests of charts of joint and separate flotation of sylvine from ores 1–3 mine managements of JSC “Belaruskali” in the conditions of enhanceable temperatures.
2017-03-17T12:24:51Z
2017-03-17T12:24:51Z
2014
Article
Flotation sylvite from potash ores at elevated temperatures / M. R. Turko [et al.] // Proceedings of BSTU. No. 3. – Minsk : BSTU, 2014. – P. 63-68
https://elib.belstu.by/handle/123456789/14610
622.7.017.2
en
BSTU