Micro-arc oxidation of Ti6Al4V and Ti6Al7Nb alloys for biomedical applications

被引：134

作者：

Cimenoglu, Huseyin ^{[1
]}

Gunyuz, Mert ^{[1
]}

Kose, Gamze Torun ^{[2
]}

Baydogan, Murat ^{[1
]}

Ugurlu, Faysal ^{[3
]}

Sener, Cem ^{[3
]}

机构：

[1] Istanbul Tech Univ, Dept Met & Mat Engn, Chem & Met Engn Fac, TR-34469 Istanbul, Turkey

[2] Yeditepe Univ, Dept Genet & Bioengn, Fac Engn & Architecture, TR-34755 Istanbul, Turkey

[3] Marmara Univ, Fac Dent, Dept Oral & Maxillofacial Surg, TR-34365 Istanbul, Turkey

来源：

MATERIALS CHARACTERIZATION | 2011年 / 62卷 / 03期

关键词：

Micro-arc oxidation; Titanium; Ti6Al4V; Ti6Al7Nb; Biocompatibility; CALCIUM-PHOSPHATE COATINGS; TITANIUM-ALLOYS; BIOACTIVITY; FILMS; CELLS; CA;

D O I：

10.1016/j.matchar.2011.01.002

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

In the present study, the in-vitro biological responses of two competitive titanium alloys (Ti6Al4V and Ti6Al7Nb) were investigated after modifying their surfaces by the micro-arc oxidation (MAO) process conducted in a (CH3COO)(2)Ca center dot H2O and Na3PO4 containing electrolyte under identical electrical parameters and exposure time. After the process, the surfaces of the alloys were covered with a thick (approx. 10 mu m) TiO2 layer exhibiting different characteristics. The oxide layer of the Ti6Al4V alloy was porous and contained hydroxyapatite precipitates whereas the oxide layer of the Ti6Al7Nb alloy showed a more grainy appearance and contained calcium titanate precipitates. Simulated body fluid (SBF) and cell culture tests were conducted to compare the biological performance of the alloys. Even though oxidized alloys exhibited somewhat similar response in SBF tests, the number of SAOS-2 cells attached to the oxide layer of the Ti6Al4V alloy was greater than that of the Ti6Al7Nb alloy. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：304 / 311

页数：8

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