采用化学镀法在钢铁件表面制备了黑色镍-铜-磷合金层.研究了发黑剂对化学镀层表面颜色的影响,及影响化学镀层性能的各个因素.最佳工艺为:28g/L硫酸镍,30g/L次磷酸钠,15g/L柠檬酸钠,1g/L硫酸铜,8g/L硫氰酸钾,15g/L醋酸钠,2mg/L硫脲,pH为7.0,θ为80℃,得到耐磨耐蚀、结合力较好的黑色Ni-Cu-P合金镀层.%Black Ni-Cu-P coating was prepared on steel surface by electroless plating. The effect of blackening agent on coating surface colorand factors affecting coating performance were studied. The optimal parameter was as follows: 28g/L NiSO4.6H2O,30g/L NaH2PO2. H2O , 15g/L Na3C6H5O7. H2O , 1g/L CuSO4 · 5H2O ,8g/L KCNS , 15g/L CH3COONa,2mg/L NH2CSNH2, pH 7.0, θ 80℃. The coating has good corrosion resistance, abrasion resistance and satisfied adhesion.
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