Effects of anodic oxidation and hydrothermal treatment on surface characteristics and biocompatibility of Ti-30Nb-1Fe-1Hf alloy

Shih Fu Ou, Hsin Hua Chou, Chao Sung Lin, Ching Jui Shih, Kuang Kuo Wang, Yung Ning Pan

研究成果: 雜誌貢獻文章

22 引文 斯高帕斯(Scopus)

摘要

Anodic oxidation followed by hydrothermal treatment has been widely applied for surface modification of titanium alloys to precipitate a crystalline hydroxyapatite (HA) layer in order to achieve improved osteoconduction. A majority of the studies in the literature imposed relatively high powers to enhance Ca and P in the anodic oxide film (AOF). However, high powers have been found to cause deterioration of the adhesive strength in one of the author's previous study. In this study, a new electrolyte comprising calcium acetate monohydrate (CA), β-glycerophosphate disodium pentahydrate (β-GP) and HA powder was developed, and the Ti-30Nb-1Fe-1Hf alloy was anodized in this HA-containing electrolyte to a relatively low voltage. Results show that the AOF anodized in the HA-containing electrolyte exhibits a better HA forming ability during hydrothermal treatment, attributing to the presence of HA powder in the electrolyte that effectively enhances both the Ca content and Ca/P ratio in the AOF. On the other hand, the adhesive strength was little affected due to the decrease in size of the craters residing in the AOF. With respect to the biological responses, not much difference in biocompatibility of the treated and untreated Ti-Nb surfaces was obtained. However, the anodized and hydrothermally treated surface promotes the attachment of cells.
原文英語
頁(從 - 到)6190-6198
頁數9
期刊Applied Surface Science
258
發行號17
DOIs
出版狀態已發佈 - 六月 15 2012

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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