摘要
在钢件上化学镀镍—磷合金保护层,提出了一个实用配方,施镀温度85℃,pH值4.8~5.1。镀液承载量为1.2dm2/L时,连续使用5个周期,镀速仍可达7.2mg/h·cm2。还原剂消耗量与还原的Ni比率为4.9~5.8:1。
Electroless Plating of Ni-P alloy on steel parts was practised with a formulation containing sodium hypophosphite as the reducing agent.The bath life excesses 5 turnovers with a reasonable Plating rate(≥7.2mg/h.cm2)at the temperature of 85℃,a load of 1.2dm2/L and the pH value of 4.8 ̄5.1.The ratio of reducing agent consumption to the reduced Ni is 4.9 ̄5.8:1.After the heat treatment at 380℃ for two hours,the deposit showed a microhardness more than Hv 900kg/mm2.
出处
《青岛化工学院学报(自然科学版)》
1994年第3期221-225,共5页
Journal of Qingdao Institute of Chemical Technology(Natural Science Edition)
关键词
化学镀
合金
工艺
镀合金
磷镍合金
eleetroless plating
Ni-P deposit
plating processes.