Combined effect of pulse electron beam treatment and thin hydroxyapatite film on mechanical features of biodegradable AZ31 magnesium alloy

The morphology, elemental, phase composition, nanohardness, and Young's modulus of the hydroxyapatite (HA) coating deposited via radio frequency (RF) magnetron sputtering onto the AZ31 surface were investigated by atomic force microscopy (AFM), scanning electron microscopy (SEM), energy dispers...

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Published inIOP conference series. Materials Science and Engineering Vol. 98; no. 1; pp. 12030 - 12037
Main Authors Surmeneva, M A, Tyurin, A I, Teresov, A D, Koval, N N, Pirozhkova, T S, Shuvarin, I A, Surmenev, R A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 06.11.2015
Subjects
Alloying elements
Atomic force microscopy
Biodegradability
Calcium phosphates
Electron beam processing
Energy dispersive X ray spectroscopy
Hydroxyapatite
hydroxyapatite coating
magnesium alloy
Magnesium alloys
Magnesium base alloys
Magnetron sputtering
Modulus of elasticity
Morphology
Nanohardness
Nanoindentation
Phase composition
Plastic deformation
pulsed electron beam treatment
Radio frequency
RF-magnetron sputtering
Scanning electron microscopy
Substrates
Young's modulus
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Summary:The morphology, elemental, phase composition, nanohardness, and Young's modulus of the hydroxyapatite (HA) coating deposited via radio frequency (RF) magnetron sputtering onto the AZ31 surface were investigated by atomic force microscopy (AFM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and nanoindentationtechniques. The calcium phosphate (Ca P) molar ratio of the HA coating deposited via RF-magnetron sputtering onto AZ31 substrates according to EDX was 1.57+0.03. The SEM experiments revealed significant differences in the morphology of the HA film deposited on untreated and treated with the pulsed electron beam (PEB) AZ31 substrate. Nanoindentation studies demonstrated significant differences in the mechanical responses of the HA film deposited on the initial and PEB-modified AZ31 substrates. The nanoindentation hardness and the Young's modulus of the HA film on the magnesium alloy modified using the PEB treatment were higher than that of the HA layer on the untreated substrate. Moreover, the HA film fabricated onto the PEB-treated surface was more resistant to plastic deformation than the same film on the untreated AZ31 surface.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/98/1/012030