Mechanical and degradation properties of zinc adopted magnesium alloys for biomedical application

Conference on Innovation in Technology and Engineering Science

工业技术（总论）

Nanda, I.P.^1 ; Hassim, M.H.^2 ; Idris, M.H.^2 ; Jahare, M.H.^2 ; Abdulmalik, S.S.^2 ; Arafat, A.^3

Department of Mechanical Engineering, Universitas Andalas, Padang, Indonesia^1

School of Mechanical Engineering, Universiti Teknologi Malaysia, Johor, Malaysia^2

Department of Mechanical Engineering, Universitas Negeri Padang, Padang, Indonesia^3

关键词: Aging population;    Biomedical applications;    Bone reconstruction;    Degradation behavior;    Electrochemical corrosion tests;    Human body fluids;    Microstructure and mechanical properties;    Weight percentages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/602/1/012094/pdf
DOI  :  10.1088/1757-899X/602/1/012094

学科分类：工业工程学

来源: IOP

【 摘 要 】

The demand for short-term degradable implant in bone fixation applications is growing steadily due to the aging population worldwide. Degradable implants have the advantage that the second surgery for implant removal is not required. Magnesium is one of the best candidates because it is biodegradable, physiologically compatible and even stimulates bone reconstruction. However, the high degradation rate of pure magnesium in human body fluids may prevent its wider application. In this study, Zinc (Zn) was added in magnesium (Mg) to improve its properties. The effects of five different weight percentage of Zinc (2%, 4%, 6%, 8%, 10%) were investigated. The microstructure and mechanical properties evolution of the alloys were characterized and evaluated using optical microscopy, Scanning Electron Microscope (SEM), tensile test and Vickers hardness test, while degradation behavior was examined using electrochemical corrosion test. The binary Mg-Zn cast alloy with 6 wt. % zinc content (labeled as Mg-6Zn) shows optimum mechanical strength with slowest degradation rate.