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前言二十世纪被称作“材料革命的时代”。新材料的世界市场正以两倍于整个世界经济增长速度而发展。特殊复合材料由于它超出常规材料的优良性能,被越来越多地应用于航空航天、民用以及普通工业领域。在特殊复合材料中,以碳化硅晶须增强、增韧金属基、陶瓷基复合材料的发展近来尤为引人瞩目。中国矿业大学北京研究生部在1993年1月建成一条年产1吨碳化硅晶须的中试生产线,所研制生产的 BP-碳化硅晶须直径粗,直晶率高,成本低。在复合Si_3N_4陶瓷中表现出极好的增强、增韧特性,尤
Foreword The twentieth century is called “the era of material revolution.” The world market for new materials is growing at twice the rate of economic growth in the entire world. Special composite materials are increasingly used in aerospace, civil and general industrial fields because of their superior performance over conventional materials. In special composite materials, silicon carbide whiskers to enhance the toughening of metal-based, ceramic-based composites recently attracted particular attention. China University of Mining and Technology Beijing Graduate Department in January 1993 to build an annual output of 1 ton of silicon carbide whiskers pilot production line, developed by the production of BP - silicon carbide whisker diameter coarse, high straight crystal rate, low cost. In composite Si_3N_4 ceramics showed excellent enhancement, toughening properties, especially