中南大学学报（自然科学版）2012，Vol.43Issue(5)：1690-1695,6.
Cr-N涂层高速钢在Na3PO4水溶液中的摩擦－腐蚀电化学噪声行为
Wear-electrochemical noise behavior of Cr-N coating on M2 HSS in Na3PO4 solution
摘要
Abstract
Cr-N hard coating was synthesized on M2 HSS surface by magnetron sputtering deposition. Scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and glow discharge optical emission spectroscopy (GDOES) analysis were used to characterize coating microstructure, electronic state of Cr and N elements in the surface and main elements distribution. Corrosion-wear behaviors of M2 substrate and coating sliding against corundum were studied using an electrochemical noise technique in 0.02 moI/L Na3PO4 solution. Wear behaviors of the M2 steel and Cr-N coating in ambient air were also investigated for comparison. The results show that the Cr-N coating has duplex-layer structure, where Cr and CrN are mainly of coating composition, and wear resistance of the M2 substrate in ambient air is significantly improved by the Cr-N coating. In Na3PO4 solution, as the depassivation-repassivation and interface pitting accelerate both corrosion and abrasion, the Cr-N coating has no antifriction and antiwear effect on the M2 substrate, and its failure characteristic is completely different from that of in ambient air condition.关键词
Cr-N涂层/摩擦学性能/电化学噪声Key words
Cr-N coating/ wear behavior/ electrochemical noise分类
矿业与冶金引用本文复制引用
范爱兰,唐宾,田林海,吴培强,刘道新..Cr-N涂层高速钢在Na3PO4水溶液中的摩擦－腐蚀电化学噪声行为[J].中南大学学报（自然科学版）,2012,43(5):1690-1695,6.基金项目
国家自然科学基金资助项目(51171125) （51171125）
山西省科技攻关项目(20110321051) （20110321051）
山西省回国留学人员科研基金资助项目(2011-038) （2011-038）
