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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290In Vitro Bioactivity Test of FA Added with TiO2 of...

In Vitro Bioactivity Test of FA Added with TiO₂ of Different Phases Coated on Ti-6Al-4V Substrates by Nd-YAG Laser Cladding Process

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Abstract:

Hydroxyapatite (HA) is a frequently used bioactive coating material. However, when HA coating is soaked in the simulated body fluid (SBF), it is usually detached from substrate material due to its high dissolution rate in the solution. Recently, it is found that Fluorapatite (FA) has a better anti-dissolution ability than HA. In this study, Fluorapatite was mixed with TiO₂powder (either Anatase phase (A) or Rutile phase (R)) as a coating material precursor, and then be deposited on Ti-6Al-4V substrate to form the coating layer by using Nd-YAG laser cladding process. After soaking in SBF for various days, it is observed that dense ball-like apatite grew faster on the surface of the FA+R coating layer than that on the surface of the FA+A specimens. The corresponding Ca/P ratios of FA+R specimens also dropped faster than FA+A ones.

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Periodical:

Advanced Materials Research (Volumes 287-290)

Pages:

2225-2229

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.287-290.2225

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Online since:

July 2011

Authors:

Chi Sheng Chien, Yu Sheng Ko, Tsung Yuan Kuo, Tze Yuan Liao, Ting Fu Hong, Tzer Min Lee

Keywords:

Fluorapatite, Laser Cladding, SBF, Ti6Al4V, Titania

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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