scholarly journals Effect of the grain composition of the initial silicon carbide powder on the structure and properties of reaction-sintered silicon carbide

2021 ◽  
Vol 1942 (1) ◽  
pp. 012039
Author(s):  
M V Tomkovich
Keyword(s):  
Silicon Carbide ◽  
Carbide Powder ◽  
Structure And Properties ◽  
Grain Composition ◽  
Initial Silicon ◽  
Silicon Carbide Powder ◽  
Sintered Silicon

Fabrication of silicon carbide nanoceramics

1996 ◽  
Vol 11 (7) ◽  
pp. 1601-1604 ◽  
Author(s):  
Mamoru Mitomo ◽  
Young-Wook Kim ◽  
Hideki Hirotsuru
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Deformation Behavior ◽  
Superplastic Deformation ◽  
Average Particle Size ◽  
Liquid Phase Sintering ◽  
Carbide Powder ◽  
Average Particle ◽  
Average Grain Size ◽  
Silicon Carbide Powder

Ultrafine silicon carbide powder with an average particle size of 90 nm was densified by hot-processing with the addition of Al2O3, Y2O3, and CaO at 1750 °C. Silicon carbide nanoceramics with an average grain size of 110 nm were prepared by liquid phase sintering at low temperature. The materials showed superplastic deformation at a strain rate of 5.0 × 10-4/s at 1700 °C, which is the lowest temperature published. The microstructure and deformation behavior of materials from a submicrometer powder were also investigated as a reference.

Flame Synthesis Of High Purity, Nanosized Crystalline Silicon Carbide Powder

1995 ◽  
Vol 410 ◽  
Author(s):  
D. G. Keil ◽  
H. F. Calcote ◽  
R. J Gill
Keyword(s):  
Silicon Carbide ◽  
Crystalline Silicon ◽  
Flame Synthesis ◽  
Carbide Powder ◽  
Air Exposure ◽  
Precise Control ◽  
Metal Impurities ◽  
High Yields ◽  
Silicon Carbide Powder

ABSTRACTSelf-propagating flames in pure silane-acetylene mixtures produce silicon carbide (SiC) powder and hydrogen as main products. Through precise control of the stoichiometry of the reactant gas mixture, it has been possible to produce white SiC at high yields. Characterization of such powders by TEM has shown that the nascent powder consists of polycrystalline hexagonal plates with a narrow size distribution (40 ± 7 nm diameter). Infrared spectroscopy of powders indicate microcrystalline SiC and little bound hydrogen. Chemical analysis by the ANSI method showed the powder to be >96 wt % SiC with an impurity of silica (3.9 weight %) due to air exposure of the powder. Traces (0.1 to 0.2 weight %) of both free carbon and free silicon were found. Metal impurities detected by SIMS were typically low: less than 10 ppba for aluminum, sodium, titanium and vanadium. Boron was observed at 10 ppma. Like the oxygen, the boron impurities are probably associated with exposure of the powders to the atmosphere.

scholarly journals Improvement of surface quality using silicon carbide powder added dielectric fluid during EDM

2017 ◽  
Vol 184 ◽  
pp. 012039
Author(s):  
Ahsan Ali Khan ◽  
Nurul Nasuha Binti Mohamad Royani ◽  
Muataz Hazza Faizi Al-Hazza ◽  
Mohd Radzi Haji Che Daud ◽  
AKM Mohiuddin
Keyword(s):  
Silicon Carbide ◽  
Surface Quality ◽  
Dielectric Fluid ◽  
Carbide Powder ◽  
Silicon Carbide Powder

Exfoliation-assisted dispersion of short carbon fibers in silicon carbide powder

2014 ◽  
Vol 267 ◽  
pp. 273-278 ◽  
Author(s):  
Thakur Sudesh Kumar Raunija ◽  
Mariamma Mathew ◽  
Sharad Chandra Sharma
Keyword(s):  
Silicon Carbide ◽  
Carbon Fibers ◽  
Carbide Powder ◽  
Short Carbon ◽  
Silicon Carbide Powder

Comminution of silicon carbide powder in a planetary mill

2006 ◽  
Vol 169 (2) ◽  
pp. 84-88 ◽  
Author(s):  
Maria Aparecida P. dos Santos ◽  
Célio A. Costa
Keyword(s):  
Silicon Carbide ◽  
Planetary Mill ◽  
Carbide Powder ◽  
Silicon Carbide Powder
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