Tribological mechanism of micro-arc oxidation coatings prepared by different electrolyte systems in artificial seawater

被引：26
|
作者：
Guo, Huixia [1 ]
Liu, Ziye [1 ,2 ]
Wang, Yongxin [2 ]
Li, Jinlong [3 ]
机构：
[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Bioelectrochem & Environm Anal Gansu Prov, Lanzhou 730070, Peoples R China
[2] Key Lab Marine New Mat & Related Technol, Ningbo, Zhejiang, Peoples R China
[3] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Protect Technol, Ningbo 315201, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Titanium; Micro-arc oxidation; Different electrolyte; Tribological mechanism; Seawater environment;
D O I：
10.1016/j.ceramint.2020.11.169
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The micro-arc oxidation (MAO) coatings were prepared in four different electrolyte systems, including mixed acid, phosphate, phosphate-aluminate and phosphate-silicate electrolytes. The friction and wear properties of MAO coatings in ambient air, seawater and four groups of saline solutions related to seawater were investigated. The results showed that the addition of silicate to phosphate could increase the density of the coating. The phosphate-aluminate ceramic layer exhibited the lowest wear rate in various environments. Additionally, the friction coefficient and wear rate of MAO coating in seawater were lower than those in ambient air, which was due to the boundary lubrication effect of seawater. Meanwhile, the presence of divalent metal salts in seawater made its lubricity better than other salt solutions.
引用
收藏
页码：7344 / 7352
页数：9
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