钢基体的Ni-P和Ni-Cu-P合金镀层的性能研究

摘要

The corrosion resistance and hardness of Ni-P alloy coating and Ni-Cu-P alloy coating were contrasted.Heat treatment temperature and holding time on the corrosion resistance of two coatings were studied.Results showed that,the surface of Ni-Cu-P alloy coating was denser than that of Ni-P alloy coating,and the corrosion resistance was better.When heat treatment temperature was 200～300 ℃,the hardness of Ni-P alloy coating and Ni-Cu-P alloy coating were both increased with the increasing of holding time.However,the hardness of Ni-P alloy coating and Ni-Cu-P alloy coating were both increased first and then decreased when heat treatment temperature was 400 ℃.%对比了Ni-P合金镀层和Ni-Cu-P合金镀层的耐蚀性及硬度.研究了热处理温度及保温时间对两种镀层耐蚀性的影响.结果表明:与Ni-P合金镀层相比,Ni-Cu-P合金镀层表面更加致密,耐蚀性更好;当热处理温度为200～300℃时,Ni-P合金镀层和Ni-Cu-P合金镀层的硬度均随保温时间的延长而增大;当热处理温度为400℃时,Ni-P合金镀层和Ni-Cu-P合金镀层的硬度均随保温时间的延长先增大后减小.