Thermal Conductivity and Microstructure Properties of Porous SiC Ceramic Derived from Silicon Carbide Powder

The Ti-6Al-4V alloy is the most important and widely used titanium alloy which enjoys the welding, forging and machining capabilities. However brittle at high temperatures and low thermal conductivity caused restrictions to deformation and machining of this alloy. So advanced methods machining such as Electrical discharge machining has been developed for titanium and its alloys. One of the ways to improve the performance of electrical discharge machining method is to add the powder to the dielectric. Depending on the type of powder used the different results are achieved. In this study the effect of silicon carbide powder on electrical discharge machining of titanium alloys has been studied. Results suggest that the addition of silicon carbide powder in an electric discharge machining method reduces the roughness and rate filings will be taken. The experimental results showed that the addition of silicon carbide powder will have a positive effect on reducing corrosion of the electrode.

Download Full-text

The preparation of boron-doped silicon carbide powder by the carbothermal reduction of oxides derived from the hydrolyzed methyltriethoxysilane

Journal of Non-Crystalline Solids ◽

10.1016/0022-3093(88)90080-4 ◽

1988 ◽

Vol 100 (1-3) ◽

pp. 542-546 ◽

Cited By ~ 9

Author(s):

Yoshiyuki Sugahara ◽

Yasuharu Takeda ◽

Kazuyuki Kuroda ◽

Chuzo Kato

Keyword(s):

Silicon Carbide ◽

Carbothermal Reduction ◽

Carbide Powder ◽

Boron Doped ◽

Doped Silicon ◽

Reduction Of Oxides ◽

Silicon Carbide Powder

Download Full-text

Effects of the technological parameters on the characteristics of the polyacrylamide-coated silicon carbide powder

Materials Letters ◽

10.1016/s0167-577x(03)00292-1 ◽

2003 ◽

Vol 57 (26-27) ◽

pp. 4212-4217 ◽

Cited By ~ 2

Author(s):

Guangjun Zhang ◽

Mingkun Wei ◽

Qide Wu

Keyword(s):

Silicon Carbide ◽

Carbide Powder ◽

Technological Parameters ◽

Silicon Carbide Powder

Download Full-text

Experimental and numerical analysis on the thermal degradation of reinforced silicone-based composites: Effect of carbon fibres and silicon carbide powder contents

Thermochimica Acta ◽

10.1016/j.tca.2020.178563 ◽

2020 ◽

Vol 686 ◽

pp. 178563 ◽

Cited By ~ 1

Author(s):

G. Dugast ◽

A. Settar ◽

K. Chetehouna ◽

N. Gascoin ◽

J.-L. Marceau ◽

...

Keyword(s):

Silicon Carbide ◽

Numerical Analysis ◽

Thermal Degradation ◽

Carbide Powder ◽

Carbon Fibres ◽

Silicon Carbide Powder

Download Full-text

Fabrication of silicon carbide nanoceramics

Journal of Materials Research ◽

10.1557/jmr.1996.0200 ◽

1996 ◽

Vol 11 (7) ◽

pp. 1601-1604 ◽

Cited By ~ 80

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.

Download Full-text

Flame Synthesis Of High Purity, Nanosized Crystalline Silicon Carbide Powder

MRS Proceedings ◽

10.1557/proc-410-167 ◽

1995 ◽

Vol 410 ◽

Cited By ~ 5

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.

Download Full-text