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钛合金具有高的比强度、热强度和高的抗蚀性等优越特性,已使之成为现代技术中最有前途的结构材料之一。由于钛合金的线膨胀系数(20—100°时为8.3—9.4×10~(-6))与玻璃相近用钛合金制造与光学玻璃连接的另件不但轻便,而且在使用温度变化时不会引起成象质量恶化。近年来钛合金已逐步为光学结构设计所采用。但钛合金美中不足之处,尚有硬度较低,耐磨性较差等弊病,在许多场合下不能满足使用,因而限制了钛材
Titanium alloy with superior specific strength, hot strength and high corrosion resistance has made it one of the most promising structural materials in modern technology. As the linear expansion coefficient of titanium alloy (20-100 °, 8.3-9.4 × 10 -6) similar to the glass made of titanium alloy with optical glass connected to the other pieces not only lightweight, but also in the use of temperature does not change Causing the image quality to deteriorate. In recent years, titanium alloy has been gradually adopted for the optical structure design. However, the drawbacks of the US-China titanium alloy, there are lower hardness, poor wear resistance and other ills, in many cases can not meet the use, thus limiting the titanium