研究了硫酸铜加入量对化学镀Ni-Cu-P合金的镀层成分、组织及热稳定性影响,用中性盐雾实验和在20%H_2SO_4+20 g/LAl_2O_3溶液中的冲刷腐蚀实验研究了Ni-P与Ni-Cu-P合金的耐蚀性和耐冲刷腐蚀性能.结果表明,Ni-Cu-P合金镀层具有比Ni-P合金镀层更好的热稳定性、耐蚀性和耐冲刷腐蚀性能.
The effect of CuSO_4 content of the bath on the composition, microstructure and thermal stability of electroless Ni-Cu-P coating was examined by SEM with EDAX. The anticorrosion properties of Ni-P and Ni-Cu-P coatings were compared by the standard salt spray and erosion corrosion test in a solution of 20% H_2SO_4 +20 g/LAl_2O_3. The results show that the thermal stability,corrosion resistance and erosion corro-sion resistance of Ni-Cu-P alloy coating were all superior to those of electroless Ni-P alloy coating.
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