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前言钼合金是一种耐高温材料,但在空气中于650℃以上即强烈氧化,生成易升华的氧化物。为解决高温防氧化问题,国内外曾对钼合金的表面防护作过许多研究。钼合金的工作温度在1100～1200℃时,一般采用铬、镍等多层电镀层。在1300～1400℃时采用陶瓷涂层和硅化物涂层。因钼与铬具有相似的热膨胀系数,因而在镀(涂)多层镀(涂)层时,常以铬层作底层。根据设计部门提出
Preface Molybdenum alloy is a high temperature resistant material, but in the air at 650 ℃ or more that is strongly oxidized, easy to sublimate oxide. In order to solve the problem of high temperature oxidation prevention, many studies have been done on the surface protection of molybdenum alloy at home and abroad. Molybdenum alloy working temperature 1100 ~ 1200 ℃, the general use of chromium, nickel and other multi-layer plating. At 1300 ~ 1400 ℃ ceramic coating and silicide coating. Because molybdenum and chromium have similar coefficients of thermal expansion, chrome layers are often used as the underlayer in plating (coating) multilayer plating. According to the design department