Ultrathin film coating of hydroxyapatite (HA) on a magnesium-calcium alloy using RF magnetron sputtering for bioimplant applications

Maria A. Surmeneva, Timur Mukhamedrashidovich Mukhametkaliyev, Hadis Khakbaz, Roman A. Surmenev, M. Bobby Kannan

Research output: Contribution to journalArticle

24 Citations (Scopus)


A thin film of hydroxyapatite (HA) was coated on a magnesium-calcium (Mg-Ca) alloy using radio frequency (RF) magnetron sputtering. The thickness of the HA coating was in the range of 550-750 nm. In vitro degradation behaviour of the HA coated alloy was evaluated in simulated body fluid (SBF) using electrochemical methods. The ultrathin film coating has significantly improved the degradation resistant of the alloy. The polarisation resistance (Rp) of the coated alloy was more than two-order of magnitude higher and the corrosion current density (icorr) reduced by ~98% as compared to the base alloy.

Original languageEnglish
Pages (from-to)280-282
Number of pages3
JournalMaterials Letters
Publication statusPublished - 1 Aug 2015



  • Biomaterials
  • Degradation
  • Hydroxyapatite
  • Magnesium alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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