表面技术2018，Vol.47Issue(2)：71-76,6.DOI:10.16490/j.cnki.issn.1001-3660.2018.02.012
40Cr钢表面渗氮及制备CrN涂层在重载低速下的摩擦学性能
Tribological Properties of Plasma Nitriding and CrN Coating on 40Cr Steel with High Load at Low Speed
摘要
Abstract
The work aims to improve tribological properties of 40Cr gear with high load at low speed.Nitrided layer and CrN coating were prepared on 40Cr steel substrate by plasma nitriding and arc-evaporation deposition (AED).Phase composition,morphology and tribological properties of 40Cr steel receiving different surface treatments were investigated with X-ray diffractometer (XRD),scanning electron microscopy (SEM),energy dispersive spectrum (EDS) and reciprocating friction and wear tester.Thickness and microhardness of the nitrided layer was 10 μm and 558HV,respectively.The thickness and microhardness of the CrN coating was 4 μm and 1341HV,respectively.Wear rate of the 40Cr steel was 104.17 × 10-6 mm3/(N.m) under the load of 60 N,and the wear mechanism was mainly slight adhesive wear and abrasive wear;the wear rate of the CrN coating on 40Cr steel was 17.36 × 10 6 mm3/(N.m) under the load of 60 N,and the wear mechanism was mainly slight abrasive wear.The 40Cr steel exhibits the best anti-wear and anti-friction properties under the normal load of 20～60 N after CrN coating is prepared.关键词
40Cr钢/齿轮/CrN涂层/重载荷/摩擦磨损Key words
40Cr steel/gear/CrN coating/high load/friction and wear分类
矿业与冶金引用本文复制引用
王永光,陈瑶,陆小龙,章华..40Cr钢表面渗氮及制备CrN涂层在重载低速下的摩擦学性能[J].表面技术,2018,47(2):71-76,6.基金项目
国家自然科学基金(51775360,51005102) （51775360,51005102）
中国博士后基金(2015M571801) （2015M571801）
江苏省博士后基金(1402121C) （1402121C）
清华大学摩擦学国家重点实验室开放基金(SKLTKF10B04) （SKLTKF10B04）
教育部留学回国启动基金(20111139)Supported by the National Natural Science Foundation of China (51775360,51005102) （20111139）
the Chinese Postdoctoral Science Foundation (2015M571801) （2015M571801）
the Postdoctoral Science Foundation of Jiangsu Province (1402121C) （1402121C）
the State Key Laboratory of Tribology Tsinghua University (SKLTKF10B04) （SKLTKF10B04）
the Scientific Research Foundation for the Returned Overseas Chinese Scholars,Ministry of Education (20111139) （20111139）
