CAJ | 학술논문

空间反射镜材料的选取与反射镜镜坯加工工艺直接影响光学遥感卫星的成像能力。提高空间相机分辨率的直接途径是增大光学系统的口径，因此大口径空间反射镜的材料技术和镜坯加工技术受到了高度关注。在未来相当长的时间内，相关技术都是研究热点。文章重点研究了常用空间反射镜材料的特性，这些材料包括美国康宁公司的超低膨胀玻璃、德国肖特集团的微晶玻璃、碳化硅和碳化硅复合材料，并对熔接法、浇铸法、烧结法等常用的大口径反射镜镜坯加工方法进行了研究，调研了各类材料的实际在轨应用情况。最后根据上述材料的热膨胀系数和反射镜结构强度等特征，分析总结了这些材料的适用范围。
공간반사경재료적선취여반사경경배가공공예직접영향광학요감위성적성상능력。제고공간상궤분변솔적직접도경시증대광학계통적구경，인차대구경공간반사경적재료기술화경배가공기술수도료고도관주。재미래상당장적시간내，상관기술도시연구열점。문장중점연구료상용공간반사경재료적특성，저사재료포괄미국강저공사적초저팽창파리、덕국초특집단적미정파리、탄화규화탄화규복합재료，병대용접법、요주법、소결법등상용적대구경반사경경배가공방법진행료연구，조연료각류재료적실제재궤응용정황。최후근거상술재료적열팽창계수화반사경결구강도등특정，분석총결료저사재료적괄용범위。
Selection of space mirror materials and manufacturing process of mirror blank directly affect imaging capacity of an optical remote sensing satellite. The direct method for improving resolution of space camera is to improve the aperture of optical system, so material technology for producing large aperture space-borne mirror and manufacturing approaches to mirror blanks get great attention in foreign countries. For quite a long time, these technologies have been an important research direction. In this paper, the characteristics of main space mirror materials which include Corning’s ultra-low expansion glass(ULE), SCHOTT’s Zerodur , SiC and SiC composite are researched, and manufacturing methods of mirror blanks such as sealing, casting and sintering are analyzed. Space applications of these materials are summarized. Based on characteristics of the aforementioned materials such as coefficient of thermal expansion and strength of mirror structure, applica-ble range of the materials is analyzed.