采用固相原料，加入适当的催化剂，在保护气氛中反应制备碳化硅晶须。得到的碳化硅晶须以β晶型为主，兼有少量α晶型；晶须有白色，灰白色，灰绿色，深绿色等多种颜色，其颜色变化与原料中的硅炭比值有直接关系；晶须的光洁度受晶须生长局部范围内过饱和度与保护气氛等因素影响；反应原料的堆积密度是影响晶须直晶率的主要因素，稻壳原料生长的晶须其直晶率较高。 Using solid raw materials, adding appropriate catalyst, in a protective atmosphere reaction of silicon carbide whiskers. The obtained silicon carbide whiskers are mainly β crystal with a small amount of α crystal. The whiskers are white, gray, gray-green, dark green and other colors. The color change is directly related to the ratio of silicon to carbon in the raw materials ; Whisker finish is affected by supersaturation within the local range of whisker growth and the protective atmosphere; the bulk density of the reaction raw materials is the main factor affecting the whisker straight grain growth rate, high.