Enhanced protective coatings on Ti-10V-2Fe-3Al alloy through anodizing and post-sealing with layered double hydroxides

被引:9
作者
Lei Liu [1 ]
Liang Wu [1 ,2 ]
Xiaobo Chen [3 ]
Deen Sun [1 ,2 ]
Yuan Chen [1 ,2 ]
Gen Zhang [1 ]
Xingxing Ding [1 ]
Fusheng Pan [1 ,2 ]
机构
[1] College of Materials Science and Engineering, Chongqing University
[2] National Engineering Research Center for Magnesium Alloys, Chongqing University
[3] School of Engineering, RMIT University, City Campus
基金
中央高校基本科研业务费专项资金资助; 中国博士后科学基金; 中国国家自然科学基金;
关键词
Titanium alloy; Malic acid; Layered double hydroxides; Sealing; Corrosion resistance; Tribological properties;
D O I
暂无
中图分类号
TG174.4 [金属表面防护技术];
学科分类号
080503 ;
摘要
Anodic oxidation is a prevalent technique to introduce superior corrosion and wear resistance upon the surface of titanium(Ti) alloys, in which the selection of appropriate electrolytes and defect-sealing strategies is a key. This study aims to address such issues through anodizing Ti-10V-2Fe-3Al alloy in malic acid, followed by a post-sealing treatment with Mg-Al layered double hydroxides(LDHs). The characteristics of the samples were investigated using scanning electron microscopy(SEM), atomic force microscopy(AFM), glow discharge optical emission spectroscopy(GDOES), X-ray diffraction(XRD) and energy-dispersive X-ray spectroscopy(EDS). SEM micrographs reveals that the anodic coating had a surface full of bulges and cracks, and was almost sealed by the following LDHs treatment. XRD pattern indicate that the anodic coating was mainly consisted of amorphous TiO;with a small fraction of anatase,but its crystallization degree was increased through the post-sealing. Moreover, electrochemical and tribological measurements demonstrate that corrosion current density was 2.8 × 10;, 2.0×10;, 5.9×10;A cm;, and wear rate was 1.45×10;, 1.30×10;and 6.90×10;mm;N;m;for respective bare Ti-10V-2Fe-3Al alloy substrate, anodized specimens without and with the LDHs post treatment. Finally, a plausible wear mechanism was proposed.
引用
收藏
页码:104 / 113
页数:10
相关论文
共 3 条
[1]  
G.Zhang,L.Wu,A.Tang,H.Pan,Y.Ma,Q.Zhan,Q.Tan,F.Pan,A.Atrens. J.Electrochem.Soc . 2018
[2]  
G.Zhang,L.Wu,A.T.Tang,B.Weng,A.Atrens,S.D.Ma,L.Liu,F.S.Pan. RSCAdv . 2018
[3]  
L.Wu,G.Zhang,A.Tang,Y.Liu,A.Atrens,F.Pan. J.Electrochem.Soc . 2017