Results 171 to 180 of about 965 (205)

Micropyretic synthesis of MoSi₂ powders through an aluminothermic reaction

Journal of Materials Research, 1999
An aluminothermic reaction starting with inexpensive MoO3, SiO2, and Al powders was utilized to prepare molybdenum disilicide (MoSi2) powders by the micropyretic/combustion synthesis process and leaching. The combustion-synthesized product was porous and could readily be crushed into powders.
Ming Fu, S. Penumella, J. A. Sekhar
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Effects of Reaction Temperature and Time on the Aluminothermic Reduction of Magnesia

Advanced Materials Research, 2012
The present paper focuses on the experimental investigation of the aluminothermic reduction of magnesia under vacuum condition with the fixed magnesia to aluminum molar ratio of 11:6. The influences of reaction temperature and time on the reduction ratio of magnesia were studied.
Peng Deng, Yu Qin Liu, Da Jian Ma, Hong Wen Ma   +3 more
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Self-propagating high-temperature synthesis of Al2O3-TiC-Al composites by aluminothermic reactions

Journal of Materials Science, 2001
Al2O3-TiC-Al composites were fabricated by self-propagating high-temperature synthesis process using aluminothermic reactions with titania, aluminum, and graphite powders. As the molar ratio x of the excessive aluminum in the reactants increases, the adiabatic temperature of the reaction and the melting rate of alumina in the products obviously ...
T. D. Xia, T. Z. Liu, W. J. Zhao, B. Y. Ma, T. M. Wang   +4 more
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Laser-Initiated Aluminothermic Reaction Applied to Preparing Mo-Si Film on Silicon Substrates

MRS Proceedings, 1987
ABSTRACTMo-Si films on silicon substrates has been prepared by the CO2 laser-initiated aluminothermic reaction. The features of these films have been characterized by RBS, AES, etc. The formation mechanism is discussed.
Li Ding, Lu Xuebiao, Zhou Zhengzhuo, Qiu Mingxin, Lin Chenglu   +4 more
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Composite ceramics in powder or sintered form obtained by aluminothermal reactions

Materials Science and Engineering, 1985
Abstract Work has been carried out to synthesize composite materials by taking advantage of the energy given off during the aluminothermal reaction. Compositions and procedures are described for obtaining, in this way, materials of the following three systems: MoSi2Al2O3 powder mixtures (possibly for heating elements), TiCAl2O3 powder mixtures ...
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Enhancing Strength of Nanolaminate 1045 Steel Prepared by Aluminothermic Reaction through Multiple Warm Rolling

steel research international, 2017
Large dimensional bulk 1045 carbon steel with nanolaminate pearlite is prepared by aluminothermic reaction casting method. The steel is rolled at 873 K with different thickness reduction. Microstructures evolution and mechanical properties are characterized in detail.
Zhengning Li, Fuan Wei, Peiqing La, Jie Sheng   +3 more
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The effect of aluminothermic reaction on the progress of carbothermic reaction in simultaneous mechanochemical reduction of CuO and ZnO

Journal of Alloys and Compounds, 2009
Abstract In this research, the effect of aluminothermic reaction on the progress of carbothermic reaction in simultaneous mechanochemical reduction of CuO and ZnO has been studied. A mixture of CuO and ZnO powders along with different amounts of aluminum and graphite was milled in a planetary ball-milling machine.
M.S. Marashi, J. Vahdati Khaki
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The “quiet Goldschmidt”—a mechanochemical, thermoanalytical, and spectroscopic study of selected steps of the aluminothermic reaction

Journal of Solid State Chemistry, 2013
The Goldschmidt reaction (2Al+α-Fe{sub 2}O{sub 3}) was investigated both under mechanical and thermal activation by employing a combination of analytical methods such as ESR and Mossbauer spectroscopy, magnetic susceptibility, X-ray powder diffraction, and thermal analysis (TA).
Stößer, R., Feist, M., Willgeroth, C., Emmerling, F., Menzel, M., Reuther, H.   +5 more
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Fabrication of MoSi2–MgAl2O4 in situ composites by combustion synthesis involving intermetallic and aluminothermic reactions

Vacuum, 2019
Abstract Combustion synthesis involving aluminothermic reduction and intermetallic reaction was conducted in the mode of self-propagating high-temperature synthesis (SHS) to fabricate MoSi2–MgAl2O4 in situ composites with a broad composition range. Two thermite mixtures with stoichiometries of MoO3 + 2Al and 0.6MoO3 + 0.6SiO2 + 2Al were incorporated ...
C.L. Yeh, Y.C. Chen
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Enhanced Mechanical Properties of 316L Stainless Steel Prepared by Aluminothermic Reaction Subjected to Multiple Warm Rolling

Metals and Materials International, 2018
Large dimensional bulk 316L stainless steels were prepared by aluminothermic reaction method and rolled at 973 K (700 °C) with different deformation, the microstructures evolution and mechanical properties were characterized in detail. The results showed that the microstructure of casting steel consists of nanocrystalline/submicrocrystalline ...
Z. N. Li, F. A. Wei, P. Q. La, F. L. Ma
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