Effect of current density on tribological properties of micro-arc oxidation ceramic film on Al-Mg-Sc alloy

被引：8
作者：
Wu, Mingjin [1 ]
Jiang, Feng [1 ,2 ]
Tang, Zhongqin [3 ]
Long, Mengjun [2 ]
Wu, Feifei [1 ]
Su, Yuanming [2 ]
机构：
[1] Cent South Univ, Light Alloy Res Inst, Changsha, Peoples R China
[2] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[3] Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China
来源：
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES | 2023年 / 11卷 / 01期
关键词：
Al-Mg-Sc alloy; microstructure; anti-wear property; micro-arc oxidation; current density; PLASMA ELECTROLYTIC OXIDATION; MICROSTRUCTURE; COATINGS; ALUMINUM;
D O I：
10.1088/2051-672X/acb9a9
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Ceramic films on Al-Mg-Sc alloy were prepared in alkaline sodium silicate electrolyte solution at different current densities by micro-arc oxidation (MAO) technique. The influence of current density on the microstructure and tribological property of the MAO ceramic films was investigated. The experimental results indicated that the surface porosity decreased and roughness increased with the increase of current density. The optimal anti-friction effect of the MAO ceramic film prepared at the current density of 10 A dm(-2) was obtained. The wear mechanism of MAO ceramic film was the coexistence of abrasive wear, adhesive wear and oxidation wear. The wear resistance of MAO ceramic film prepared on Al-Mg-Sc alloy structural components could be increased, which could reduce the risk of failure of structural components due to mechanical vibration.
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页数：10
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