期刊
BIOMEDICAL MATERIALS
卷 13, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1748-605X/aa9718
关键词
bioactive coatings; magnetron sputtering; hardness; elastic modulus; corrosion resistance; cell viability; sarcoma cells
资金
- Bilateral cooperation Turkey-Romania Project [RO599/2013, TUBITAK 112R020]
- Romanian National Authority for Scientific Research (CNCS-UEFISCDI) [PN-II-PT-PCCA-2014-212, PED117/2017]
Hydroxyapatite (HAP) coatings are applied on metallic implant materials to combine mechanical properties of metallic material with bioactivity abilities of HAP ceramic. In this study, HAP coatings with additions of Si and Mg are proposed to be deposited on Ti6Al4V substrates by RF magnetron sputtering. Chemical bonding, morphology, topography and corrosion resistance in simulated body fluids (SBF) of the coatings were investigated. Additionally, mechanical and biological properties of the coatings were evaluated. It was found that the addition of Si and Mgdoes not influence the formation of a HAP phase. All the coatings exhibited smooth surface and uniform growth, without defects or cracks. Both hardness and elastic modulus of the coated samples decrease with Mgaddition in the HAP-Si structure. Both Mg and Si addition into HAP coatings were found to enhance the corrosion resistance of the Ti6Al4V alloy in the SBF solution. Coatings with low Mg content exhibited better corrosion performance. All the coatings investigated were biocompatible, as demonstrated by SaOS-2 bone cell attachment and growth. However, cell proliferation and morphology were inferior on samples with the highest Mg content.
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