A biodegradable AZ91 magnesium alloy coated with a thin nanostructured hydroxyapatite for improving the corrosion resistance

T M Mukhametkaliyev; M A Surmeneva; A Vladescu; C M Cotrut; M Braic; M Dinu; M D Vranceanu; I Pana; M Mueller; R A Surmenev

doi:10.1016/j.msec.2017.02.033

A biodegradable AZ91 magnesium alloy coated with a thin nanostructured hydroxyapatite for improving the corrosion resistance

Mater Sci Eng C Mater Biol Appl. 2017 Jun 1:75:95-103. doi: 10.1016/j.msec.2017.02.033. Epub 2017 Feb 9.

Authors

T M Mukhametkaliyev¹, M A Surmeneva¹, A Vladescu², C M Cotrut³, M Braic⁴, M Dinu⁴, M D Vranceanu⁵, I Pana⁶, M Mueller⁷, R A Surmenev⁸

Affiliations

¹ National Research Tomsk Polytechnic University, 634050, Lenin Avenue 43, Tomsk, Russia.
² National Research Tomsk Polytechnic University, 634050, Lenin Avenue 43, Tomsk, Russia; National Institute for Optoelectronics, 409 Atomistilor St., RO77125 Magurele, Romania.
³ National Research Tomsk Polytechnic University, 634050, Lenin Avenue 43, Tomsk, Russia; Politehnica University of Bucharest, 313 Spl. Independentei, Bucharest, Romania.
⁴ National Institute for Optoelectronics, 409 Atomistilor St., RO77125 Magurele, Romania.
⁵ Politehnica University of Bucharest, 313 Spl. Independentei, Bucharest, Romania.
⁶ National Institute for Optoelectronics, 409 Atomistilor St., RO77125 Magurele, Romania; Faculty of Physics, Bucharest University, 405 Atomistilor St., RO77125 Magurele, Romania.
⁷ Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB, 70569 Stuttgart, Germany.
⁸ National Research Tomsk Polytechnic University, 634050, Lenin Avenue 43, Tomsk, Russia. Electronic address: [email protected].

PMID: 28415551
DOI: 10.1016/j.msec.2017.02.033

Abstract

The main aim of this study was to investigate the properties of an AZ91 alloy coated with nanostructured hydroxyapatite (HA) prepared by radio frequency (RF) magnetron sputtering. The bioactivity and biomineralization of the AZ91 magnesium alloy coated with HA were investigated in simulated body fluid (SBF) via an in vitro test. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) analyses were performed. The samples were immersed in SBF to study the ability of the surface to promote the formation of an apatite layer as well as corrosion resistance and mass change of the HA-coated AZ91 alloy. Electrochemical tests were performed to estimate the corrosion behaviour of HA-coated and uncoated samples. The results revealed the capability of the HA coating to significantly improve the corrosion resistance of the uncoated AZ91 alloy.

Keywords: Biodegradable material; Corrosion resistance; Hydroxyapatite; Magnesium alloy; Magnetron sputtering.

MeSH terms

Alloys / chemistry*
Coated Materials, Biocompatible / chemistry*
Corrosion
Durapatite / chemistry*
Magnesium / chemistry*
Nanostructures / chemistry*

Substances

Alloys
Coated Materials, Biocompatible
Durapatite
Magnesium