Hydroxyapatite deposited on flat and porous Ti

被引:0
作者
Jakubowicz, J. [1 ]
Adamek, G. [1 ]
机构
[1] Poznan Univ Tech, Inst Mat Sci & Engn, Poznan, Poland
来源
2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010) | 2010年
关键词
Titanium oxide; Porous titanium; Biomaterials; Hydroxyapatite; TITANIUM-ALLOYS; COATINGS;
D O I
暂无
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Formation of porous Ti layer during electrochemical etching in H3PO4 + NH4F, subsequent deposition of calciumphosphate and corrosion behavior of the materials was described. Anodic etching results in surface roughening with pits diameter in the range of 7- 12 mu m. The subsequent cathodic electrochemical treatment, results in hydroxyapatite ( HA) deposition. The source of Ca and P were two types of electrolytes: 0.1M HCl + 0.005M HA and 0.042M Ca( NO3) (2) + 0.025M ( NH4)(2)HPO4 + 0.1M HCl. The formed HA layer has lamellas structure. The deposited calcium- phosphate layer could be useful for the osseointegration and presents excellent corrosion resistance in simulated body fluids. The corrosion current I-c for flat Ti, porous Ti and porous Ti with HA layer is: 3.9.10(-8) A.cm(-2), 2.52.10(-8) A.cm(-2) and 1.07.10(-8) A.cm(-2) respectively. It was found, that anodization and subsequent calcium- phosphate deposition, results in better corrosion resistance of the samples, with comparison to the sample without these treatments.
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页数:4
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