INVESTIGATION OF THE INTERACTION OF UDP METALS WITH PRODUCTS OF THERMAL DECOMPOSITION OF TETRAZOLE BINDER

В статье приводятся экспериментальные исследования ультрадисперсных металлических порошков алюминия, меди, железа, вольфрама, титана, цинка, никеля, сплавов меди с алюминием, меди с железом и латуни. Описаны термические свойства их смесей с метилполивинилтетразолом, пластифицированным динитратпропиленгликолем; указаны численные величины значимых характеристик.Результаты исследования показали, что существенное количество тепла выделяется при нагреве порошков алюминия, цинка, титана и железа; при нагреве смесей со связующим, наилучшие результаты соответствуют сплаву меди с железом, алюминию и сплаву меди с алюминием. The article presents experimental studies of ultrafine metal powders of aluminum, copper, iron, tungsten, titanium, zinc, nickel, alloys of copper with aluminum, copper with iron and brass. The thermal properties of their mixtures with methyl polyvinyl tetrazole and plasticized propylenglycoldinitrate are described; numerical values of significant characteristics are indicated.The results of the study showed that a significant amount of heat is released when heating aluminum, zinc, titanium and iron powders; when heating mixtures with a binder, the best results correspond to an alloy of copper with iron, aluminum and an alloy of copper with aluminum.

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Double mixtures of ultrafine metal powders: Production, rolling, and sintering. I. Thermal decomposition of double metal formate mixtures

Powder Metallurgy and Metal Ceramics ◽

10.1007/s11106-008-9015-5 ◽

2008 ◽

Vol 47 (5-6) ◽

pp. 265-272 ◽

Cited By ~ 1

Author(s):

A. V. Lyushinskii

Keyword(s):

Thermal Decomposition ◽

Metal Powders ◽

Ultrafine Metal ◽

Metal Formate

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Calculation of plasma centrifugal spraying parameters of fine granules of heat-resistant nickel alloys

Blanking productions in mechanical engineering (press forging, foundry and other productions) ◽

10.36652/1684-1107-2020-18-10-471-474 ◽

2020 ◽

pp. 471-474

Author(s):

M.G. Yagodin ◽

E.I. Starovoytenko

Keyword(s):

Powder Metallurgy ◽

Nickel Alloys ◽

Dynamic Pressure ◽

Calculated Data ◽

Powder Size ◽

Metal Powders ◽

Heat Resistant ◽

Gas Dynamic ◽

Spraying Parameters ◽

Wide Range

The equipment for the production of wide range of metal powders purposed for powder metallurgy is described. The possibility for producing of powders by the plasma centrifugal spraying is considered taking into account the gas dynamic pressure. The calculated data on the powder size for different materials are given.

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Experimental studies and ANN predictions on the thermal properties of TiO2-Ag hybrid nanofluids: Consideration of temperature, particle loading, ultrasonication and storage time

Powder Technology ◽

10.1016/j.powtec.2021.04.069 ◽

2021 ◽

Author(s):

Weikai Ji ◽

Liu Yang ◽

Zihan Chen ◽

Mao Mao ◽

Jia-nan Huang

Keyword(s):

Thermal Properties ◽

Storage Time ◽

Experimental Studies ◽

Particle Loading ◽

Hybrid Nanofluids ◽

And Storage

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Theoretical and experimental studies on the thermal decomposition of 1-butyl-3-methylimidazolium dibutyl phosphate

Journal of Loss Prevention in the Process Industries ◽

10.1016/j.jlp.2020.104162 ◽

2020 ◽

Vol 65 ◽

pp. 104162

Author(s):

Shunchao Li ◽

Huichun Jiang ◽

Min Hua ◽

Xuhai Pan ◽

Hangchen Li ◽

...

Keyword(s):

Thermal Decomposition ◽

Experimental Studies

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Statistical copolymers of N -vinylpyrrolidone and 2-(dimethylamino)ethyl methacrylate via RAFT: Monomer reactivity ratios, thermal properties, and kinetics of thermal decomposition

Journal of Polymer Science Part A Polymer Chemistry ◽

10.1002/pola.28763 ◽

2017 ◽

Vol 55 (22) ◽

pp. 3776-3787 ◽

Cited By ~ 13

Author(s):

Nikoletta Roka ◽

Olga Kokkorogianni ◽

Marinos Pitsikalis

Keyword(s):

Thermal Decomposition ◽

Thermal Properties ◽

Reactivity Ratios ◽

Monomer Reactivity Ratios ◽

Ethyl Methacrylate ◽

Kinetics Of Thermal Decomposition ◽

Kinetics Of

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Thermal properties, crystal lattice energy, mechanism and energetics of the thermal decomposition of hydrochlorides of 2-amino acid esters

Thermochimica Acta ◽

10.1016/0040-6031(90)87026-9 ◽

1990 ◽

Vol 171 ◽

pp. 253-277 ◽

Cited By ~ 3

Author(s):

Janusz Rak ◽

Jacek Łubkowski ◽

Irena Nikel ◽

Józef Przybylski ◽

Jerzy Błaz̵ejowski

Keyword(s):

Thermal Decomposition ◽

Thermal Properties ◽

Amino Acid ◽

Crystal Lattice ◽

Lattice Energy ◽

Amino Acid Esters ◽

Crystal Lattice Energy ◽

Energy Mechanism ◽

Acid Esters

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Structural, elastic, electronic and thermal properties of InAs: A study of functional density

Revista Facultad de Ingeniería ◽

10.19053/01211129.v26.n46.2017.7320 ◽

2017 ◽

Vol 26 (46) ◽

Author(s):

Víctor Mendoza-Estrada ◽

Melissa Romero-Baños ◽

Viviana Dovale-Farelo ◽

William López-Pérez ◽

Álvaro González-García ◽

...

Keyword(s):

Thermal Properties ◽

Density Functional ◽

Experimental Studies ◽

Debye Model ◽

Band Gap Energy ◽

Functional Theory ◽

Zinc Blende ◽

The Density Functional Theory ◽

The Stability ◽

Experimental Values

In this research, first-principles calculations were carried out within the density functional theory (DFT) framework, using LDA and GGA, in order to study the structural, elastic, electronic and thermal properties of InAs in the zinc-blende structure. The results of the structural properties (a, B0, ) agree with the theoretical and experimental results reported by other authors. Additionally, the elastic properties, the elastic constants (C11, C12 and C44), the anisotropy coefficient (A) and the predicted speeds of the sound ( , , and ) are in agreement with the results reported by other authors. In contrast, the shear modulus (G), the Young's modulus (Y) and the Poisson's ratio (v) show some discrepancy with respect to the experimental values, although, the values obtained are reasonable. On the other hand, it is evident the tendency of the LDA and GGA approaches to underestimate the value of the band-gap energy in semiconductors. The thermal properties (V, , θD yCV) of InAs, calculated using the quasi-harmonic Debye model, are slightly sensitive as the temperature increases. According to the stability criteria and the negative value of the enthalpy of formation, InAs is mechanically and thermodynamically stable. Therefore, this work can be used as a future reference for theoretical and experimental studies based on InAs.

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Iron reduction from concentrates of hydrometallurgical dressing

Izvestiya Ferrous Metallurgy ◽

10.17073/0368-0797-2021-10-728-735 ◽

2021 ◽

Vol 64 (10) ◽

pp. 728-735

Author(s):

I. A. Rybenko ◽

O. I. Nokhrina ◽

I. D. Rozhikhina ◽

M. A. Golodova ◽

I. E. Khodosov

Keyword(s):

Experimental Study ◽

Thermal Decomposition ◽

Thermodynamic Modeling ◽

Iron Reduction ◽

Solid Phase ◽

Experimental Studies ◽

Statistical Processing ◽

Reducing Agent ◽

Volatile Components ◽

Software Complex

The article presents results of theoretical and experimental studies of the processes of iron solid-phase reduction from an iron-containing concentrate obtained as a result of hydrometallurgical dressing of ferromanganese and polymetallic manganese-containing ores with coals of grades D (long-flame) and 2B (brown). The method of thermodynamic modeling using TERRA software complex was used to study the reducing properties of hydrocarbons by calculating equilibrium compositions in the temperature range of 373 - 1873 K. The authors obtained the dependences of compositions and volume of the gas phase formed as a result of the release of volatile components during heating on the temperature for the coals of the grades under consideration. As a result of thermodynamic modeling, the optimal temperatures and consumption are determined, which ensure the complete iron reduction from an iron-containing concentrate. The results of experimental studies were obtained by modern research methods using laboratory and analytical equipment, as well as methods of statistical processing. Results of the coals analysis carried out using the Setaram LabSys Evo thermal analyzer showed that the process of thermal decomposition of coals of the studied grades proceeds according to general laws. The process of thermal decomposition of long-flame coal proceeds less intensively than of brown coal. The results of an experimental study of the processes of thermal decomposition of reducing agents have shown that volumes of the gas phases, formed when coals are heated to a temperature of 1173 K in an argon atmosphere, practically coincide with the calculated values. As a result of thermodynamic modeling and experimental study, the optimal consumption of D and 2B grades of coal is determined at a temperature of 1473 K. The best reducing agent with a minimum specific consumption is long-flame coal of D grade. When determining the optimal amount of reducing agent in charge mixtures during the study of metallization processes, it was found that with an excess of reducing agent, it is possible to achieve almost complete extraction (98 - 99 %) of iron from the concentrate.

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Experimental Studies and Thermodynamic Modeling of the Interaction of O2 with SiC

MRS Proceedings ◽

10.1557/proc-742-k4.4 ◽

2002 ◽

Vol 742 ◽

Author(s):

Y. Song ◽

F. W. Smith

Keyword(s):

Phase Diagram ◽

Thermal Decomposition ◽

High Temperatures ◽

Thermodynamic Modeling ◽

Surface Segregation ◽

Experimental Studies ◽

Temperature Phase ◽

Temperature Phase Diagram

ABSTRACTWe report on experimental studies and thermodynamic modeling of the reaction of O2 with the 4H- and 6H-SiC surfaces at high temperatures. This reaction leads to the growth of passivating SiO2 layers at high O2 pressures, etching of the surfaces at lower pressures, and enhancements of the surface segregation of carbon at still lower pressures. A pressure-temperature phase diagram for the oxidation of SiC is presented. Evidence for the thermal decomposition of the SiO2 layer on SiC is also presented.

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