The improved performance of micro-arc oxidation coating on Mg surface via the in-situ incorporation of Ta2O5 by pre-sputtering Ta layer

被引：1
|
作者：
Liang, Fei [1 ]
Ren, Ying [2 ]
Mei, Di [1 ]
Li, Xia [1 ]
Wang, Liguo [1 ,3 ]
Zhu, Shijie [1 ,3 ]
Guan, Shaokang [1 ,3 ]
机构：
[1] Zhengzhou Univ, Sch Mat Sci & Engn, Henan Prov Key Lab Adv Light Alloys, Zhengzhou 450001, Peoples R China
[2] Henan Univ Technol, Engn & Technol Res Ctr Diamond Composite Mat Henan, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China
[3] Minist Educ, Key Lab Mat Proc & Mold, Zhengzhou 450002, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1009卷
关键词：
Magnesium alloy; Micro-arc oxidation; Tantalum oxide; Corrosion resistance; Magnetron sputtering; PLASMA ELECTROLYTIC OXIDATION; CORROSION BEHAVIOR; MAGNESIUM ALLOYS; IMPLANTS; TANTALUM; AZ31; GROWTH; FILMS;
D O I：
10.1016/j.jallcom.2024.177073
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To further enhance the corrosion resistance of micro-arc oxidation (MAO) coatings on magnesium alloys, this study proposes a novel approach for in situ incorporating tantalum oxide into MAO coating by pre-sputtering pure tantalum layer on magnesium surface. The results show that the uniformly distributed tantalum oxide enhances the chemical stability of the MAO coating. Compared to the normal MAO coating, the tantalum oxidecontaining MAO coating exhibits superior corrosion resistance, inhibiting localized corrosion of the substrate. Additionally, tantalum oxide-containing MAO coating also improved the hydrophilicity of magnesium alloy in simulated body fluid. This innovative method contributes to the long-term service reliability of magnesium alloys, highlighting its potential applications as orthopedic implants.
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页数：12
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