Studies on plasma sprayed bi-layered ceramic coating on bio-medical Ti-13Nb-13Zr alloy

被引：40
作者：
Sathish, S. [2 ]
Geetha, M. [2 ]
Aruna, S. T. [1 ]
Balaji, N. [1 ]
Rajam, K. S. [1 ]
Asokamani, R. [2 ]
机构：
[1] Natl Aerosp Labs, Council Sci & Ind Res, Surface Engn Div, Bangalore 560017, Karnataka, India
[2] VIT Univ, Sch Mech & Bldg Sci, Vellore 632014, Tamil Nadu, India
来源：
CERAMICS INTERNATIONAL | 2011年 / 37卷 / 04期
关键词：
X-ray methods; Corrosion; Hardness; ZrO2; Biomedical applications; ALUMINA-TITANIA COATINGS; NANOSTRUCTURED POWDERS; AGGLOMERATED POWDERS; CORROSION BEHAVIOR; THERMAL BARRIER; WEAR-RESISTANCE; MICROSTRUCTURE; TIO2; DEPOSITION;
D O I：
10.1016/j.ceramint.2010.12.012
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：
Biomedical Ti alloys are prone to undergo degradation due to the combined effect of wear and corrosion. To overcome these problems, surface modification techniques are being used. In this paper, the biomedical Ti alloy Ti-13Nb-13Zr was plasma sprayed with nanostructured Al2O3 13 wt%TiO2, yttria stabilized zirconia powders and bilayer containing alternate layers of the two coatings to improve the corrosion resistance and microhardness of the substrate. The plasma sprayed coatings were characterized by X-ray diffraction, scanning electron microscopy and Raman spectroscopy. The microstructure, microhardness and surface roughness of the coatings were investigated. The corrosion resistance of the coatings was studied in simulated body conditions. The results show improved corrosion resistance for the bilayered coating compared to the individual plasma sprayed coatings on biomedical Ti-13Nb-13Zr alloy substrate. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：1333 / 1339
页数：7
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