离子镀CrN纳米叠层膜的磨损行为

doi:10.3969/j.issn.1671-7775.2014.03.016

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摘要低温状态下,采用离子镀技术在A3钢基体表面上制备了CrN纳米叠层膜;在扫描电镜下观察镀膜试样表面和截面的微观形貌;利用X射线衍射分析测定镀膜的相结构;使用磨轮式磨损试验机评价镀膜的磨损性能．结果表明:CrN纳米叠层膜具有明显的层状结构,消除了镀膜中柱状晶外延生长的缺陷,抑制了常规离子镀CrN膜在磨损过程中的大块剥落现象,CrN纳米叠层膜的失效形式为微区剥落;该镀膜较常规CrN膜的耐磨损性能得到显著提高,沉积电流为60 A时所制备的CrN纳米叠层膜在磨损3 000转后失重量为02 mg,仅为同条件下常规CrN膜失重量的1/10．

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	魏杰
	牛云松
	于志明

关键词 ：纳米叠层镀膜, CrN, 离子镀, 柱状晶, 磨损行为

Abstract：To eliminate the columnar epitaxial growth by conventional ion plating, the nanomultilayered CrN coatings were prepared on A3 steel substrates by arc ion plating method. The cross section and surface morphologies were observed by scanning electron microscope. The phase structures of the CrN coatings were determined by Xray diffraction analysis. The wear resistance was assessed with a NUSLSO1 type rubber wheel tester. The results show that the microstructure of the nanomultilayered CrN coating is clearly stackedup sandwich structure. The columnar epitaxial growth is eliminated, and the bulk flakeoff is avoided by the nanomultilayered microstructure. The wear mechanism of nanomultilayered CrN coating is a kind of the microarea detachment. The wear resistance of the nanomultilayer CrN coatings is much better than that of conventional CrN coatings. After 3 000 cycles, the mass loss of the nanomultilayered CrN coating deposited at cathode current of 60 A is only 024 mg, approximately one tenth of conventional CrN coating.

Key words： nanomultilayered coating CrN ion plating columnar wear behavior

基金资助:

国家“863”计划项目（2009AA03Z103）

作者简介: 魏杰（1988—），男，河南信阳人，硕士研究生（jwei11s@imr.ac.cn），主要从事离子镀防护薄膜的研究. 于志明（1956—），男，河北宣化人，研究员（zmyu@imr.ac.cn），主要从事镀膜功能性材料的研究.

引用本文:

魏杰, 牛云松,于志明. 离子镀CrN纳米叠层膜的磨损行为[J]. 江苏大学学报（自然科学版）, 2014, 35(3): 334-338. Wei Jie，Niu Yunsong，Yu Zhiming. Wear behavior of nanomultilayered CrN coating by ion plating[J]. Journal of Jiangsu University(Natural Science Eidtion) , 2014, 35(3): 334-338.

链接本文:

http://zzs.ujs.edu.cn/xbzkb/CN/10.3969/j.issn.1671-7775.2014.03.016 或 http://zzs.ujs.edu.cn/xbzkb/CN/Y2014/V35/I3/334