Evaluating sol-gel ceramic thin films for metal implant applications. I. Processing and structure of zirconia films on Ti-6AI-4V

Journal of Biomedical Materials Research
M J FiliaggiG Shapiro

Abstract

Thin ceramic films or coatings over metallic bone-interfacing implant surfaces have the potential to improve implant performance with respect to implant fixation, wear, or corrosion. In this study, zirconia (ZrO2) thin films formed on Ti-6AI-4V using a polymeric alkoxide-based solgel process were investigated. ZrO2 films of uniform thickness on the order of 100 nm were obtained by dip coating Ti-6AI-4V samples into a zirconium propoxide containing solution using a substrate withdrawal speed ranging from 2 to 8 cm/min and a sol of nominal viscosity approximately 6 cps. These films were essentially free of surface macrodefects but had random submicron "pinholes." X-ray diffraction studies suggested that the films were at least partially crystalline, with some "metastable" cubic and/or tetragonal phases after annealing for 1 h at 500 degrees C. The demonstrated reproducibility of this approach for producing good quality ZrO2 films on Ti-6AI-4V warrants further studies to optimize processing conditions for implant applications.

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Citations

Jun 24, 1999·Dental Materials : Official Publication of the Academy of Dental Materials·H C Hsu, S K Yen
Mar 28, 2006·Journal of Biomedical Materials Research. Part a·D P LiuC B Colby
Feb 24, 2001·Journal of Biomedical Materials Research·S K Yen, S W Hsu
Jan 29, 2013·Journal of Biomedical Materials Research. Part a·Konstantina TerzakiMaria Chatzinikolaidou
Aug 11, 1998·Journal of Biomedical Materials Research·L L Hench

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