Effect of TiH2 intermediate on the structure and properties of TiO2 coating induced on titanium by induction heating and its multifunctional mechanism

被引：5
作者：
Zhao, Xingchuan [1 ]
Xu, Wenhua [2 ]
Huang, Baoxu [1 ]
Ma, Jie [1 ]
Chen, Hui [1 ]
Hao, Xuehui [1 ]
Ge, Bo [1 ]
Wang, Changzheng [1 ]
机构：
[1] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Shandong, Peoples R China
[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2021年 / 536卷
关键词：
Titanium; Hydride intermediate; Stable rutile titanium dioxide; Acid etching assisted induction heating; Formation mechanism; OXIDIZED CP-TI; THERMAL-OXIDATION; SURFACE MODIFICATION; HYDROXYAPATITE; ALLOYS; IMPLANT; CELLS; DIFFERENTIATION; BIOMATERIALS; FABRICATION;
D O I：
10.1016/j.apsusc.2020.147968
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：
Pure titanium (Ti) implants often exist problems such as corrosion and wear in the clinical application. Surface modification is vital to improve the stability and bioactivity of Ti. Induction heating (IH) has attracted increasing attention as a potential surface modification method. In this study, two methods of IH and the combination of acid etching (AE) and IH (AE + IH) were used to fabricate a stable bioactive coating on Ti. The effects of AE and IH on the microstructures, phase composition, properties, and the formation mechanism of the coatings were investigated. Results show that the coatings formed by the two methods comprise crystalline rutile TiO2 with different crystal shapes. The AE is important in determining the crystal structure of the coatings. Compared with the TiO2 formed by IH, the TiO2 coating formed by AE + IH is more compact and has smaller grains. The formation mechanism of different coatings can be attributed to the influence of TiH2 formed by AE on IH treatment. The rutile TiO2 coatings with different crystal shapes can significantly improve the corrosion resistance and wear resistance of Ti, and the coatings have good ability to induce the formation of HA in SBF.
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页数：10
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