Adhesion strength of plasma-sprayed hydroxyapatite coatings on laser gas-nitrided pure titanium

Sen Yang, Hau Chung Man, Wen Xing, Xuebin Zheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

41 Citations (Scopus)

Abstract

A layer of bioceramic HA was coated on laser gas-nitrided pure titanium and grit-blasted pure titanium substrates using plasma-spraying technique, respectively. X-ray diffraction analysis showed that the microstructures of the coating were mainly composed of HA, amorphous calcium phosphate (ACP) and some minute phases of tricalcium phosphate (TCP, α-TCP and β-TCP), tetracalcium phosphate (TTCP) and calcium oxide (CaO). The experimental results showed that the 3-D TiN dendritic scaffold structure produced on the surface of pure titanium using laser gas nitriding technique in advance could anchor the HA coating and improved the interfacial adherence significantly as compared with that on the grit-blasted surfaces.
Original languageEnglish
Pages (from-to)3116-3122
Number of pages7
JournalSurface and Coatings Technology
Volume203
Issue number20-21
DOIs
Publication statusPublished - 15 Jul 2009

Keywords

  • Bonding strength
  • Hydroxyapatite
  • Laser gas nitriding
  • Plasma spraying

ASJC Scopus subject areas

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

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