Page 95 - 《摩擦学学报》2021年第6期

第 41 卷 第 6 期 摩 擦 学 学 报 Vol 41 No 6
2021 年 11 月 Tribology Nov, 2021

DOI: 10.16078/j.tribology.2020228

工作电压对N36锆合金表面微弧氧化

涂层磨蚀性能的影响

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李正阳 , 刘睿睿 , 张 伟 , 杨忠波 , 崔学军 , 蔡振兵 1*
(1. 西南交通大学 摩擦学研究所, 四川 成都 610031;
2. 中国核动力研究设计院 反应堆燃料及材料重点实验室, 四川 成都 610213;
3. 四川轻化工大学 材料科学与工程学院, 四川 自贡 643000)
摘 要: 通过微弧氧化(MAO)设备在锆(Zr)合金表面制备氧化陶瓷涂层. 研究工作电压对Zr合金表面MAO涂层形
貌、硬度、粗糙度、元素分布和相结构的影响. 分析工作电压对Zr合金表面MAO涂层腐蚀和磨蚀性能的影响. 结果表
明：MAO涂层表面具有典型的多孔和火山熔融特征，主要由m-ZrO 2 和t-ZrO 2 相组成. MAO涂层的粗糙度比基体高，
且在电压为340 V时的粗糙度最高，达到1.36 μm. MAO涂层可分为内层致密层和外层多孔层，涂层厚度随着工作电
压的增加而增加，厚度为5~9 μm. 电压为260 V的MAO涂层的结合强度最高，达到44.3 N. MAO涂层相比较于基体具
有更好的耐腐蚀性能，电压为260 V的MAO涂层具有最高的自腐蚀电位(−0.205 V)和最低的腐蚀电流密度
−9 2
(6.24×10 A/cm ). 这是因为电压为260 V的MAO涂层具有最致密的结构，而内层致密层可以阻碍腐蚀液进入基体.
MAO涂层的主要磨损机理为磨粒磨损和氧化磨损. 工作电压为260 V的MAO涂层的磨损率仅为Zr合金基体的1/4.
关键词: 锆合金; 微弧氧化; 磨蚀; 磨损机理; 腐蚀
中图分类号: TG178 文献标志码: A 文章编号: 1004-0595(2021)06–0880–10

Effect of Voltage on Fretting Corrosion Behavior of Micro-Arc
Oxidation Coating on N36 Zirconium Alloy

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LI Zhengyang , LIU Ruirui , ZHANG Wei , YANG Zhongbo , CUI Xuejun , CAI Zhenbing 1*
(1. Tribology Research Institute, Southwest Jiaotong University, Sichuan Chengdu 610031, China
2. National Key Laboratory for Nuclear Fuel and Material, Nuclear Power Institute of China,
Sichuan Chengdu 610213, China
3. School of Materials Science and Engineering, Sichuan University of Science and Engineering,
Sichuan Zigong 643000, China)
Abstract: The oxide ceramic coating was prepared on zirconium (Zr) alloy by micro-arc oxidation (MAO) equipment.
The electrolyte was a silicate system, which was composed of 15 g/L KOH, 15 g/L Na 2 SiO 3 , and 3 g/L NaF. The
oxidation time and frequency were 15 min and 300 Hz, and the duty ratio was adjusted to 30%. Effects of voltage
(220 V, 260 V, 300 V, and 340 V) on the morphology, hardness, roughness, element distribution, and phase structure of
MAO coating were studied by scanning electron microscopy combined with energy dispersive spectroscopy, white light
interferometer instrument, and X-ray diffraction (XRD). Effect of voltage on the corrosion and fretting corrosion

Received 22 October 2020, revised 13 January 2021, accepted 18 January 2021, available online 28 November 2021.
*Corresponding author. E-mail: czb-jiaoda@126.com, Tel: +86-15828457775.
This work was supported by Key Program of National Natural Science Foundation of China (U2067221), Young Scientific
Innovation Team of Science and Technology of Sichuan (18TD0005) and Cultivation Program for the Excellent Doctoral
Dissertation of Southwest Jiaotong University.
国家自然科学基金重点项目(U2067221), 四川省高校科研创新团队项目(18TD0005)和西南交通大学优秀博士学位论文培育项目.