稀土La对Ni-Fe合金镀层性能的影响

摘要

Effect of La (NO3)3 on the corrosion resistance,high-temperature oxidation resistance,hardness,micro-morphology and component of Ni-Fe-La alloy coating were studied.Results showed that the corrosion resistance,high-temperature oxidation resistance and hardness of Ni-Fe-La alloy coating was obviously improved with the increasing of La (NO3)3 mass concentration.When the mass concentration of La(NO3)3 was 0.4 g/L,the corrosion resistance,high-temperature oxidation resistance and hardness of Ni-Fe-La alloy coating was the best.Ni-Fe-La alloy coating was fine and compact,coating contain rare earth La.%研究了La(NO3).对Ni-Fe-La合金镀层的耐蚀性、高温抗氧化性、硬度、微观形貌和成分的影响.结果表明:随着La(NO3)3的质量浓度的增加,Ni-Fe-La合金镀层的耐蚀性、高温抗氧化性、硬度均得到明显提升,并且在La(NO3)3的质量浓度为0.4 g/L时达到最优;Ni-Fe-La合金镀层结晶细致、结构紧密,其中含稀土La.