| 摘要 |
PURPOSE:To shorten time for converting materials to SiC whisker, by thinly feeding a mixture of silicon source raw material and carbon source raw material on a graphite sheet continuously circulating in a heat insulating oven and then continuously passing the mixture on the graphite sheet through a high temperature reaction area kept to nonoxidative atmosphere. CONSTITUTION:A mixture of silicon source raw material and carbon source raw material is thinly fed on a graphite sheet continuously circulated as conveyor belt. Then the mixture is continuously passed into high temperature reaction area kept to nonoxidative atmosphere. In the above-mentioned method, the thickness of the raw materials on the graphite sheet is formed so as to satisfy the equation expressed by V/S<=0.75(cm) (V is volume and S is heat transfer area) and temperature of high reaction area is 1,500-1,700 deg.C and maintaining time is 1-30min. The applied silicon raw material includes silica sand, silica gel or chaff ash and the carbon source raw material includes carbon black, graphite powder or coke powder.
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