Development of corrosion resistant surfaces via friction stir processing for bio implant applications

Current investigation presents the use of Friction Stir Processing (FSP) to improve the corrosion resistance of pure magnesium for biomedical applications. FSP has been used to incorporate hydroxyapetite (HAP) into Mg-surface so as to modify the chemical composition. FSP was done within a matrix of...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-01, Vol.284 (1), p.12026
Main Authors: Sodhi, Gurvinder Pal Singh, Singh, Harpreet
Format: Article
Language:English
Subjects:
Biomedical materials
Chemical composition
Corrosion resistance
Friction stir processing
Grain size
Magnesium
Microhardness
Parameters
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Summary:Current investigation presents the use of Friction Stir Processing (FSP) to improve the corrosion resistance of pure magnesium for biomedical applications. FSP has been used to incorporate hydroxyapetite (HAP) into Mg-surface so as to modify the chemical composition. FSP was done within a matrix of different parameters and conditions. Influence of various parameters on microstructure was also clearly observed. XRD analysis confirmed the presence of HAP, whereas SEM images revealed a uniform distribution of the imbedded phase. Microhardness and in-vitro corrosion studies were also performed. Influence of grain size on hardness was validated by Hall-Petch relationship. Corrosion behavior was explained on the basis of texture, which indicated better corrosion resistance in comparison to the pure Mg. Therefore, the study reveals that the proposed FSP methodology can be useful tool to improve mechanical and corrosion properties of pure Mg for biomedical applications.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/284/1/012026