Composition, structure and mechanical properties of metal oxide coatings produced on titanium using plasma spraying and modified by micro-arc oxidation

被引:35
作者
Koshuro, Vladimir [1 ]
Fomin, Aleksandr [1 ]
Rodionov, Igor [1 ]
机构
[1] Yuri Gagarin State Tech Univ Saratov, Inst Elect Technol & Engn, 77 Politech Skaya Str, Saratov 410054, Russia
关键词
Alumina; Plasma spraying; Titania; Micro-arc oxidation; BIOMEDICAL APPLICATIONS; ELECTROLYTIC OXIDATION; CORROSION-RESISTANCE; THERMAL-OXIDATION; SURFACE-TREATMENT; DENTAL IMPLANTS; ALLOYS; MICROSTRUCTURE; INDUCTION;
D O I
10.1016/j.ceramint.2018.04.056
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Metal oxide coatings on VT6 titanium alloy were formed by plasma spraying of aluminum oxide powder and subsequent microarc oxidation at a current density from 1 to 3 kA/m(2). As a result of combined treatment, metal oxide coatings consisting of a mixture of aluminum and titanium oxides were obtained on the surface of titanium samples. The most pronounced changes in the morphology of the plasma-sprayed coating were observed at the highest current density of 3 kA/m(2). The open porosity decreased from 56% to 38% due to the modification by micro-arc discharges, whereas the microhardness increased from 1013 +/- 150 HV to 1639 +/- 31 HV.
引用
收藏
页码:12593 / 12599
页数:7
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