论文部分内容阅读
化学气相沉积(CVD)作为表面涂覆方法,近来又有新发展,可在300℃温度下进行。在这种温度下,被涂覆的工件不会变形,材料金相组织也不会发生变化。昂贵的小零件,表面涂上1～15μm厚的碳化钨,其硬度可达2000HV以上。被涂覆工件的材料可以是钢、有色金属、铝合金、镁合金等。镍作为中间层,可使涂层结合得更完美。理想的涂覆对象是磨损快的纺织机
As a surface coating method, chemical vapor deposition (CVD) has recently been newly developed and can be performed at a temperature of 300 ° C. At this temperature, the coated workpiece will not be deformed, the material will not change the microstructure. Expensive small parts, the surface coated with 1 ~ 15μm thick tungsten carbide, the hardness up to 2000HV above. The material of the workpiece to be coated may be steel, non-ferrous metal, aluminum alloy, magnesium alloy, or the like. Nickel as the middle layer, the coating can be more perfect combination. The ideal coated object is a fast-wearing textile machine