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硬铬是国际上公认的最好耐磨镀层,但是镀硬铬产生剧毒,严重污染环境。硬铬还有耐蚀能力差和硬度的热稳定性差等缺陷。为了寻求一种新型耐磨镀层,627厂从1978年开始研究刷镀多元钴合金
Hard chrome is internationally recognized as the best wear-resistant coating, but chrome-plated chrome is highly toxic and seriously pollutes the environment. Hard chromium also has poor corrosion resistance and hardness of the poor thermal stability and other defects. In order to seek a new type of wear-resistant coating, 627 factory from 1978 began to brush plating cobalt alloy