Properties of Micro-arc Oxidized Coating on Biomedical Titanium Alloys
Ceramic coatings were fabricated on TC4 alloy by micro-arc oxidation(MAO) method in silicate solution. The microstructure,phase and composition were characterized by scanning electron microscope(SEM) and X-ray diffraction(XRD). The tribological properties of the coatings against GCrl5 steel were investigated on ball-on-disc friction and wear tester. The friction coefficient,as low as 0.16~ 0.30,is much lower than that of the TC4 alloy against the same steel counterpart,and better wear resistant. Besides, polarization curve test in 3. 5％ NaCl solution shows that the coating has better corrosion resistance. The cytotoxicity evaluation shows that MAO coating has no significant cytotoxieity and is an ideal biomedical material by MTT assay.
Titannium alloy Microarc oxidation Wear Cytotoxicity Biocompatible materials
GAO Guang-rui LI Zheng-xian DU Ji-hong XI Zheng-ping
Northwest Institute for Nonferrous Metal Research,Xian 710076,China Northwestern Polytechnical Univ Northwest Institute for Nonferrous Metal Research,Xian 710076,China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
198-201
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）