日本西铁城手表集团公司通过新工艺技术 ,生产出两种超硬不锈钢新材料。一种是在不锈钢表面通过碳分子渗入钢表面形成超硬固溶体层而生产出来的。这项新技术采用加热的ＣＯ气体处理不锈钢 ,形成 2 0～ 2 5μｍ厚的表面超硬层 ,维氏硬度约为 80 0 ,比基体硬度高 3～ 4倍。这项处 Citizen Watch Group, Japan through the new technology to produce two kinds of super-hard stainless steel new materials. One is produced on the surface of stainless steel through the infiltration of carbon molecules into the steel surface to form a super-hard solid solution layer. The new technology uses heated CO gas to treat stainless steel to form a super-hard 20 to 25 μm super hard layer with Vickers hardness of about 80 °, 3 to 4 times higher than the matrix hardness. This office