金属热处理 ›› 2021, Vol. 46 ›› Issue (8): 219-224.DOI: 10.13251/j.issn.0254-6051.2021.08.042

• 表面工程 • 上一篇    下一篇

电弧离子镀CrTiN涂层的结构及耐腐蚀性能

王其晒1, 张林1, 李伯荣2, 张宝荣3, 赵志勇3   

  1. 1.安徽工业大学 现代表界面工程研究中心, 安徽 马鞍山 243002;
    2.广东振华科技股份有限公司, 广东 肇庆 526040;
    3.山西柴油机工业有限责任公司, 山西 大同 037000
  • 收稿日期:2021-04-07 出版日期:2021-08-25 发布日期:2021-12-09
  • 通讯作者: 张 林,讲师,博士,E-mail:zhanglin_dut@163.com
  • 作者简介:王其晒(1996—),男,硕士研究生,主要研究方向为金属表面强化,E-mail:qswang23@163.com。
  • 基金资助:
    安徽省自然科学基金(2008085QE202);安徽高校自然科学研究项目(KJ2020A0265);安徽省重点研究与开发计划(202004h07020020,202004b11020011)

Structure and corrosion resistance of CrTiN coating deposited by arc ion plating

Wang Qishai1, Zhang Lin1, Li Borong2, Zhang Baorong3, Zhao Zhiyong3   

  1. 1. Research Center of Modern Surface and Interface Engineering, Anhui University of Technology, Ma'anshan Anhui 243002, China;
    2. Guangdong Zhenhua Technology Co., Ltd., Zhaoqing Guangdong 526040, China;
    3. Shanxi Diesel Engine Industry Co., Ltd., Datong Shanxi 037000, China
  • Received:2021-04-07 Online:2021-08-25 Published:2021-12-09

摘要: 采用电弧离子镀技术在模具钢H13表面沉积CrxTi1-xN涂层,系统研究了不同Cr/Ti原子比对CrTiN合金化涂层结构、力学性能以及耐腐蚀性能的影响。结果表明:通过改变分离靶弧流实现CrTiN涂层中Cr/Ti原子比的有效调控,所制备的CrTiN涂层主要由面心立方结构(Cr, Ti)N和CrN组成,随着Cr/Ti原子比从1.1增加至1.8,涂层相结构由随机取向向(111)晶面优先生长转变。CrTiN合金化涂层显微硬度较CrN涂层得到明显提升,并随着固溶引起的晶格畸变程度变化而具有一个极大值。通过电化学阻抗谱和动电位极化曲线分析,当Cr/Ti原子比为1.4时,致密的Cr0.59Ti0.41N涂层具有最佳的耐腐蚀性能。

关键词: 电弧离子镀, Cr/Ti原子比, 力学性能, 耐蚀性

Abstract: CrxTi1-xN coatings were deposited on H13 mould steel substrate by arc ion plating, and the influence of Cr/Ti atomic ratio on structure, mechanical properties and corrosion resistance of the as-deposited CrTiN coating was investigated. The results show that the CrTiN coating with different Cr/Ti atomic ratios is obtained by adjusting arc current. The CrTiN coating is composed of solid solution fcc-(Cr,Ti)N and CrN phases. With the increase of Cr/Ti atomic ratio from 1.1 to 1.8, the structure of the coating changes from a random orientation to (111) preferred growth. Microhardness of the CrTiN coating is improved as compared with CrN coating and has a maximum value with the change of lattice distortion caused by solid solution. According to electrochemical impedance spectroscopy and potentiometric polarization curve analysis, the dense Cr0.59Ti0.41N coating shows the best corrosion resistance when the Cr/Ti atomic ratio is 1.4.

Key words: arc ion plating, Cr/Ti atomic ratio, mechanical properties, corrosion resistance

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