利用化学镀制得Ni-P化学镀层,研究镀液组分含量对Ni-P化学镀镀速的影响规律.结果表明:Ni-P化学镀镀速随主盐NiSO4·6H2O、还原剂NaH2PO2·H2O、络合剂C6H8O7·H2O及缓冲剂CH4COONa含量的增加而先增加后降低;当NiSO4·6H2O,NaH2PO2·H2O和C6H8O7·H2O的质量浓度为30,20,10 g/L,Ni-P化学镀镀速的最大值为15.3,19.1,18.4μm/h;当CH4COONa的质量浓度16~20 g/L,Ni-P化学镀的镀速变化不大,平均镀速为15.6μm/h.
Ni?P coatings were prepared by electroless plating method on 45 steel,and effect of plating contents on the plating rate for Ni?P electroless plating was investigated. The results show that the plating rate is first increased and then decreased,when the content of NiSO4·6H2O,NaH2PO2·H2O,C6H8O7·H2O and CH4COONa is increased. The max plating rate is 15.3μm/h,if the content of NiSO4·6H2O is 30 g/L. The max rate is 19.1μm/h,when the content of NaH2PO2·H2O is 20 g/L. The max rate is 18.4μm/h,when the content of C6H8O7·H2O is 10 g/L. And the average rate is 15.6μm/h,when the content of CH4COONa is 16-20 g/L.
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