新型反射镜材料——碳化硅

对几种常用反射镜材料的物理性能和工艺性能进行了比较，研究了碳化硅轻质反射镜的制作工艺，结果认为：反应烧结是实现这种材料作为反射镜材料的巨大潜力的最有效的工艺，可以实现形状复杂产品的近净尺寸成型，样品在烧结过程中无收缩；样品处理时间短；无需特殊设备，在烧结过程中无需加压，样品尺寸原则上仅受烧结炉大小的限制,帛品近乎安全致密。这项研究的突破，主要依赖于反射镜成型方法及反射镜面光学加工的研究进展。最后简述了美国和俄罗斯在这方面的研究进展。

New Mirror Material of Silicon Carbide

Physical and processing properties of several kinds of general mirror materials are compared,and on this basis manufacturing process of silicon carbide light weight mirror is reviewed.Analysis indicates that reactive sintering of the silicon carbide is one of the most effective technique to make the mirrors. It is characterized by nearly clean dimension molding of profiled products,no shrinking when sintering ,short treating time ,requiring no specific facilities ,no addional pressuring when sintering and almost complete compact products with dimensions only limited by sintering furnace.Moreover development of this field in US and Russia is briefly presented.