| 40Cr钢表面渗氮及制备CrN涂层在重载低速下的摩擦学性能 |
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| 引用本文： | 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. |
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| 作者姓名： | 王永光 陈瑶 陆小龙 章华 |
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| 作者单位： | 苏州大学机电工程学院&苏州纳米科技协同创新中心,江苏苏州,215021;无锡市江南橡塑机械有限公司,江苏宜兴,214200 |
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| 基金项目： | 国家自然科学基金（51775360，51005102）；中国博士后基金（2015M571801）；江苏省博士后基金（1402121C）；清华大学摩擦学国家重点实验室开放基金（SKLTKF10B04）；教育部留学回国启动基金（20111139） |
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| 摘 要： | 目的提高40Cr齿轮在重载低速下的摩擦学性能。方法采用离子渗氮和电弧离子蒸发镀(AED)技术在40Cr钢基体上制备了渗氮层和Cr N涂层。用X射线衍射仪、扫描电子显微镜、能谱仪和往复式摩擦磨损试验机,研究了经两种表面处理后40Cr钢的物相组成、形貌和摩擦学性能。结果渗氮样品表面化合物层厚度约10μm,硬度约为558HV。Cr N涂层表面厚度约为4μm,涂层硬度约为1341HV。在60 N载荷的条件下,渗氮处理后40Cr钢的磨损率为104.17×10-6 mm3/(N·m),其磨损机理主要为轻微的粘着磨损和磨粒磨损;制备Cr N涂层后40Cr钢的磨损率为17.36×10-6 mm3/(N·m),其磨损机理主要为轻微的磨粒磨损。结论在20~60 N法向载荷下,制备Cr N涂层后,40Cr钢均表现出最优异的耐磨减摩性能。
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| 关 键 词： | 40Cr钢 齿轮 CrN涂层 重载荷 摩擦磨损 |
| 收稿时间： | 2017/8/7 0:00:00 |
| 修稿时间： | 2018/2/20 0:00:00 |
Tribological Properties of Plasma Nitriding and CrN Coating on 40Cr Steel with High Load at Low Speed |
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| WANG Yong-guang,CHEN Yao,LU Xiao-long and ZHANG Hua.Tribological Properties of Plasma Nitriding and CrN Coating on 40Cr Steel with High Load at Low Speed[J].Surface Technology,2018,47(2):71-76. |
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| Authors: | WANG Yong-guang CHEN Yao LU Xiao-long and ZHANG Hua |
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| Affiliation: | School of Mechanical and Electric Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215021, China,School of Mechanical and Electric Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215021, China,School of Mechanical and Electric Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215021, China and Wuxi Jiangnan Rubber Plastics Machinery Co. Ltd, Yixing 214200, China |
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| 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. |
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| Keywords: | 40Cr steel gear CrN coating high load friction and wear |
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