| 摘要 |
PURPOSE:To produce straight whiskers of high purity having a large fiber length and high aspect ratio, by reacting a molded article of a silicon-containing raw material with a powdery carbon raw material in a hydrogen atmosphere while heating. CONSTITUTION:A silicon-containing raw material containing silicon oxide, etc., is molded into a given shape. A catalyst and reaction accelerator are mixed with the above-mentioned molded article and a powdery carbon raw material, e.g. carbon black powder and filled in a reaction vessel. The resultant mixture is reacted in a given atmosphere while heating at >=1,400 deg.C to form silicon carbide whiskers. The reaction product is then taken out and heated at about 600-1,100 deg.C to oxidize and incinerate the unreacted carbon raw material. The resultant whiskers are straight without bending and have a large fiber length and high aspect ratio. |
