Five, tin gun black, tin cobaltnickel alloy plating gun black, cupronickel tin and chromium, cyanogens plating cupronickel tin environmental roll.
锡镍枪黑色、锡钴合金镀枪黑色、白铜锡代铬、无氰环保滚挂镀白铜锡。
2
The alloy plating method to get the melt method than the average of the alloy get high hardness, good abrasion resistance, such as nickel and cobalt nickel alloy-phosphorus alloys, etc.
电镀法得到的合金比一般热熔法得到的合金硬度高、耐磨性好，如镍-钴合金和镍-磷合金等。
3
Spectrophotometric determination of cobalt in bright nickelplating bath was advanced with ammonium thiocyanate as complexing agent and butyl acetate as extracting agent.