Preparation and Wear Resistance of Porous TC4 Titanium Alloy Micro-arc Oxidation Coating Produced by Selective Laser Melting

被引：2
作者：
Di, Kexin [1 ,2 ]
Ma, Zhen [1 ,2 ]
Li, Muqin [1 ,2 ]
Peng, Tai [1 ,2 ]
Zhao, Hanqing [1 ,2 ]
机构：
[1] Jiamusi Univ, Coll Mat Sci & Engn, Jiamusi 154007, Heilongjiang, Peoples R China
[2] Jiamusi Univ, Key Lab Oral Biomed Mat & Clin Applicat Heilongjia, Jiamusi 154007, Heilongjiang, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS | 2024年 / 26卷 / 21期
关键词：
micro-arc oxidation; selective laser melting; TC4; wear resistance; TOTAL HIP; TI6AL4V; MICROSTRUCTURE; IMPLANTS; SURFACE; BIOCOMPATIBILITY; ELECTROLYTES; FABRICATION; PARAMETERS; PHOSPHATE;
D O I：
10.1002/adem.202400948
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The porous TC4 titanium alloy prepared by selective laser melting (SLM) is modified by micro-arc oxidation (MAO) technology. By introducing active elements such as calcium (Ca) and phosphorus (P) into the electrolyte, a wear-resistant active coating is constructed on the surface of porous TC4. The effects of MAO process parameters on the surface morphology and wear resistance of the coating are discussed. The results show that the thickness and adhesion of the coating increase with the increase of the first-stage oxidation time, and decrease with the increase of the second-stage oxidation time. In all processes, the MAO-2 coating has better surface morphology and performance, with a median pore size of 0.51 mu m and a binding force of 18 N. XPS analysis confirms that the coating is mainly composed of TiO2, Ca2P2O7, and Ca(PO3)2 phases. The study of tribological behavior shows that the wear form of the substrate is abrasive wear, while the wear form of the coating is adhesive wear. The friction coefficient of the coating is significantly lower than that of the substrate, and the wear resistance is better. This study provides an effective way to optimize the surface properties of porous TC4 titanium alloy. The porous TC4 titanium alloy prepared by selective laser melting is modified by micro-arc oxidation to form a ceramic coating in situ. The morphology and wear mechanism of the coating are studied. The results show that the morphology and properties of the coating are excellent, and the wear resistance of the substrate is significantly improved.image (c) 2024 WILEY-VCH GmbH
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页数：15
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