Investigation and application of large scale lightweight SiC mirror
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摘要:介绍了大口径轻质碳化硅反射镜镜坯的基本结构、性能测试指标、国内应用及发展前景;阐述了碳化硅凝胶注模成型(Gel-casting)、反应烧结SiC(RB-SiC)与压力成型、常压烧结SiC(SSiC)两种国内主要制备大口径轻质碳化硅反射镜的方法;并对两种方法制备得到的1.45 m碳化硅镜坯的性能、测试数据及光学加工后的光学特性进行分析和比对,提出存在的问题,以供商榷,进而促进国内大口径轻质碳化硅反射镜的研究和发展。Abstract:The structures, performances and applications of large scale lightweight SiC mirror blank were introduced. Two fabricating process dominating in our country, namely gel-casting forming followed by reaction sintering(RB-SiC) and Sintered Silicon Carbide(SSiC) via pressure molding and pressureless sintering, were elaborated which were adopted to produce 1.45 m lightweight SiC mirrors. By comparing the performances, testing results and optical properties SiC mirrors fabricated via two different processes mentioned above, we analyse the problems existing in the fabricating process to further improve the development of large scale lightweight SiC mirror.
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Key words:
- SiC/
- large scale SiC mirror/
- fabricating processing
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