In situ synthesis and fabrication of tricalcium phosphate bioceramic coating on commercially pure titanium by laser rapid forming

Jiang Hu, Zhongyi Wang, Taihong Guan, Yang Gao, Xiaowei Lv, Xin Lin, Chak Yin Tang, Bo Gao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

Titanium possesses good mechanical property, but a lack of bioactivity. Bioceramic is usually used to coat the surface of a titanium implant to enhance its bioactivity. Therefore, it is important for the coating to have a high bonding strength to the titanium substrate and contain bioactive phases. In this work, CaCO3and CaHPO42H2O powders were used to fabricate a bioceramic coating on commercially pure titanium (cp-Ti) by the laser rapid forming (LRF) technique. The phase composition of the coating contained 95 wt.% of Β-TCP and 5 wt.% of Β-TCP. Three layers were found in the coating: a ceramic layer, a transitional layer, and the substrate layer. In the transitional layer, interpenetration of phases was observed. The bonding strength between the coating and the cp-Ti substrate was in excess of 40.17MPa. In addition, the elastic modulus and the micro-hardness of the coating were 117.61GPa and 431.2 HV0.1, respectively. Furthermore, the static immersion test has confirmed that the coating not only prevented the corrosion of cp-Ti, but also induced the redeposition of Β-TCP in synthetic saliva.
Original languageEnglish
Pages (from-to)3833-3837
Number of pages5
JournalSurface and Coatings Technology
Volume204
Issue number23
DOIs
Publication statusPublished - 1 Aug 2010

Keywords

  • Bioceramic coating
  • Laser
  • Pure titanium
  • Tricalcium phosphate

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this