Effect of Oxidation Time on Fretting Corrosion Behavior of MAO Coating on Zirconium Alloy

被引：0

作者：

Liu R. ^{[1
]}

Li Z. ^{[2
]}

Cai Z. ^{[2
]}

Zhou T. ^{[2
]}

Yang Z. ^{[1
]}

Cui X. ^{[3
]}

机构：

[1] Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu

[2] Tribology Research Institute, Southwest Jiaotong University, Chengdu

[3] School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2020年 / 41卷

关键词：

Fretting corrosion; Micro-arc oxidation (MAO); Oxidation time; Zirconium alloy;

D O I：

10.13832/j.jnpe.2020.S1.0118

中图分类号：

学科分类号：

摘要：

Micro-arc oxidation (MAO) coatings with different oxidation times were prepared on zirconium alloy by micro-arc oxidation technology in silicate electrolyte. The evolution of surface morphology, elemental analysis, hardness, roughness, and phase structure of MAO coating with oxidation time were analyzed. The corrosion and the fretting corrosion properties of MAO coatings with different oxidation time were investigated. Results show that the pores of MAO coating decreases with the increasing of the oxidation time. The thickness of MAO coating increases with the increasing of the oxidation time, but the growth rate of the coating decreases gradually. The thickness of MAO coating with oxidation time of 5 min is 2.57 μm, while MAO coating with the oxidation time of 30 min was 5.56 μm, indicating that the growth rate of the coating is higher in the initial stage. The potentiodynamic polarization curve shows that MAO coating can significantly improve the corrosion resistance of zirconium alloy, and the corrosion resistance of MAO coating with oxidation time of 30 min is the best. The fretting corrosion test results indicate that the wear volume of MAO coating decreases significantly, and the MAO coating with oxidation time of 30 min shows the lowest wear volume. © 2020, Editorial Board of Journal of Nuclear Power Engineering. All right reserved.

引用

页码：118 / 123

页数：5

共 15 条

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