Laser cladding of HA/Ti composite coating on NiTi alloy

S. Yang, W. H. Li, Hau Chung Man

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

To accelerate the bone growth around a metallic implant and to achieve the mechanical characteristics needed for biomedical applications, a hydroxyapatite/pure titanium (HA/Ti) composite coating was produced on NiTi alloy substrate by laser cladding. The experimental results showed that an excellent metallurgical bonding between the coating and the substrate was obtained. Owing to decomposition of HA under irradiation of high power laser, the microstructures of coating were mainly composed of CaO, CaTiO3, titanium phosphide and HA phases. In vitro experimental result demonstrated that HA/Ti composite coating made the bioactivity of NiTi alloy improved remarkably while restraining Ni ion from releasing.
Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalSurface Engineering
Volume29
Issue number6
DOIs
Publication statusPublished - 1 Jan 2013

Keywords

  • Bioactivity
  • Coating
  • Hydroxyapatite
  • Laser
  • NiTi

ASJC Scopus subject areas

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

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