化学镀Ni-P电镀Ni-Co-Mn复合层力学及耐热腐蚀性能

发布时间：2018-06-06 20:46

本文选题：化学镀 + 电镀　；参考：《稀有金属材料与工程》2017年03期

【摘要】：通过先化学镀后电镀的方法制得"基材-化学镀Ni-P层-电镀Ni-Co-Mn层"的复合层,采用金相观测、纳米压痕、纳米划痕、SEM、EDS等方法研究了镀层的力学性能及耐热腐蚀性能。结果表明,复合层的弹性模量与纳米硬度与电镀层相近,比单一化学镀层略低;复合层与基材结合得较好,复合层中2种镀层亦结合得较好,结合力超出纳米划痕的最大测量值28 N,比单一电镀层与基材的结合力大;化学镀层与电镀层的组织致密度较高,耐热腐蚀性及抗氧化性较好,且化学镀层稍优于电镀层;先化学镀后电镀的工艺比单一电镀的结合牢固,比单一化学镀的镀层生长速率要快,且热腐蚀后与基材的结合力提升很多。
[Abstract]:The composite layer of "substrate electroless plating Ni-P layer electroplated Ni-Co-Mn layer" was prepared by electroless plating and then electroplating. The mechanical properties and heat resistance of the coating were studied by means of metallographic observation, nano-indentation, nano-scratch and SEMN-EDS. The results showed that the elastic modulus of the composite layer was similar to the nano-hardness and slightly lower than that of the single electroless coating, and the composite layer combined well with the substrate and the two kinds of coating in the composite layer. The bonding force exceeds the maximum measured value of nano-scratch by 28N, which is higher than that of single electroplating layer and substrate, the microstructure density of electroless coating and electroplating layer is higher, the heat resistance and oxidation resistance are better, and the chemical coating is slightly better than the electroplating layer. The combination of electroless plating and electroplating is stronger than that of single electroless plating, and the growth rate of electroless plating is faster than that of single electroless plating.
【作者单位】：扬州大学;
【基金】：江苏省科技计划项目(BY2013063-11,BE2013110,BE2014352) 江苏省高校自然科学研究项目(BKJB460016) 扬州大学学术科技创新基金项目(b13140)
【分类号】：TG174.4

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