Corrosion and wear resistance behaviors of electroless Ni-Cu-P-TiN composite coating  

作　　者：Hong-Ming Zhou Yang Jia Jian Li Shu-Heng Yao 

机构地区：[1]School of Materials Science and Engineering,Central South University,Changsha,410083,China [2]Hunan Zhengyuan Institute for Energy Storage Materials and Devices,Changsha,410083,China

出　　处：《Rare Metals》2022年第9期3233-3238,共6页稀有金属（英文版）

基　　金：financially supported by the Project of Hunan Province Science and Technology (No. 2013GK2025);the Project of Changsha Science and Technology (No. k1403375-11);the Industry-University-Research Cooperation of Qingyuan City (Nos.2013B01,2015B04 and 2015D009)。

摘　　要：Composite coating of Ni-Cu-P alloys containing TiN particles was prepared by electroless technique based on the excellent wear resistance of TiN and better anti-corrosion property of electroless Ni-Cu-P alloys on carbon steel surfaces.Electrochemical method which uses Tafel polarization curves was carried out to study the corrosion performance of the coating.The results indicate that the anti-corrosion ability of the Ni-Cu-P-TiN composite coating(7.92 μA) is almost doubled compared with that of the as-coated Ni-P(13.60 μA).Furthermore,heat treatment results in first increase and then decrease in anticorrosion ability.And the Ni-Cu-P-TiN composite coatings heat-treated for 40 min have maximum hardness of HV 960 and a self-corrosion current of 28.20 μA.The friction coefficient of electroless composite coatings was measured by end-facing tribometer.It is found that the friction coefficient of the Ni-Cu-P-TiN composite coating decreases apparently compared with those of Ni-P and Ni-Cu-P electroless coatings.

关 键 词：Composite coating Wear resistance Anti-corrosion property Tafel polarization curves HARDNESS Self-corrosion current 

分 类 号：TG174.4[金属学及工艺—金属表面处理]