Experimental, microstructural and tribological studies of the system Mg-2Ca-5Y

8th International Conference on Advanced Concepts in Mechanical Engineering

Lupescu, S.^1 ; Munteanu, C.^1 ; Istrate, B.^1 ; Luca, D.^1 ; Benchea, M.^1 ; Mahu, G.^1

Gheorghe Asachi University of Iasi, Faculty of Mechanical Engineering Department, 43 Dimitrie Mangeron str., Iasi

700050, Romania^1

关键词: Electronic scanning microscopy;    Hexagonal phase;    Medical fields;    Micro indentation;    Micro-structural;    Scratch test;    XRD analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/444/3/032008/pdf
DOI  :  10.1088/1757-899X/444/3/032008

来源: IOP

【 摘 要 】

Everyday, biomaterials are becoming more widespread in the medical field and also in the metallurgical, aerospace, and even automotive industries. Mg-based biodegradable biomaterials are increasingly being studied and improved for their use in the medical field, even if Mg has a low corrosion resistance and not only can be alloyed to increase its strength and biocompatibility. The most commonly used and known elements with which Mg can be: Ca, Zn, Zr, Gd, Y, Si, Mn, etc. The purpose of this paper is to investigate the properties of Mg-2Ca-5Y alloy in order if it is suitable to use for use in medical applications. Surface morphology was characterized by electronic scanning microscopy (SEM) with EDAX, optical microscopy and X-ray diffraction (XRD). Following the XRD analysis, it was observed that certain specific compounds were formed: Mg2Ca, MgY, Mg24Y5 having the main structural hexagonal phase. Micro-indentation and scratch tests were also performed on the casted alloy. As a final conclusion it is shown that the Mg-2Ca-5Y is recommended for medical applications.