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

49 Citations (Scopus)


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
Issue number20-21
Publication statusPublished - 15 Jul 2009


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

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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