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 Center for Physical Materials Science and Composite Materials

Research output: Contribution to journal › Article › peer-review

Abstract

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 (R_p) of the coated alloy was more than two-order of magnitude higher and the corrosion current density (i_corr) reduced by ~98% as compared to the base alloy.

Original language	English
Pages (from-to)	280-282
Number of pages	3
Journal	Materials Letters
Volume	152
DOIs	https://doi.org/10.1016/j.matlet.2015.03.140
Publication status	Published - 1 Aug 2015

Keywords

Biomaterials
Degradation
Hydroxyapatite
Magnesium alloy

ASJC Scopus subject areas

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

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10.1016/j.matlet.2015.03.140

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Ultrathin film coating of hydroxyapatite (HA) on a magnesium-calcium alloy using RF magnetron sputtering for bioimplant applications. / Surmeneva, Maria A.; Mukhametkaliyev, Timur Mukhamedrashidovich; Khakbaz, Hadis; Surmenev, Roman A.; Bobby Kannan, M.

In: Materials Letters, Vol. 152, 01.08.2015, p. 280-282.

Research output: Contribution to journal › Article › peer-review

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abstract = "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.",

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AU - Surmenev, Roman A.

AU - Bobby Kannan, M.

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