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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 5: 1021 - 1026

DOI: https://doi.org/10.3724/SP.J.1077.2008.01021

Research Paper

Study on Bioactivity of Plasmasprayed Titania Coating

  • ZHAO Xiao-Bing ,
  • LIU Xuan-Yong ,
  • CHEN Zhi-Gang ,
  • DING Chuan-Xian
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  • 1. Department of Materials Science and Technology, Jiangsu Polytechnic University, Changzhou 213164, China; 2. Key Laboratory for Polymer Materials, Changzhou 213164, China; 3. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Received date: 2007-10-30

  Revised date: 2007-12-27

  Online published: 2008-09-20

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Abstract

Titania coatings were deposited on titanium alloy substrates by atmospheric plasma spraying using nano TiO2 powder as feedstock. Acid and alkali solutions were implied to modify the surface of the as-sprayed titania coatings. The bioactivity of titania coatings before and after modification were investigated by simulated body fluid (SBF) tests in vitro. X-ray diffraction, Scanning electron microscope, Fourier transform infrared spectroscope and Energy diffraction spectroscope
were used to investigate the microstructure and composition of titania coatings. The bonding strength and anticorrosion of titania coatings were also studied. The results indicate that the bonding strength between titania coating and Ti alloy substrate is 40MPa. The corrosion resistance performance of titania coating in SBF is better than that of Ti-6Al-4V alloy.
The SBF tests show that the carbonate-containing hydroxyapatite is formed on the titania coating surfaces which is treated by H2SO4 and NaOH. However, no bonelike apatite is formed on the surface of as-sprayed titania coating. It is concluded that the bioactivity of titania coating is improved greatly by chemical treatment.

Key words： plasma spray; titania coating; chemical treatment; bioactivation

Cite this article

ZHAO Xiao-Bing , LIU Xuan-Yong , CHEN Zhi-Gang , DING Chuan-Xian . Study on Bioactivity of Plasmasprayed Titania Coating[J]. Journal of Inorganic Materials, 2008 , 23(5) : 1021 -1026 . DOI: 10.3724/SP.J.1077.2008.01021

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