Microstructure and mechanical properties of Mg�?�HAP composites

Bulletin of materials science

Kwang Seon Shin²  Asit Kumar Khanra¹  Kug Sun Hong²  Hwa Chul Jung²  Seung Hoon Yu² 

[1] Department of Metallurgical and Materials Engineering, National Institute of Technology, Warangal 605 004, India$$Department of Metallurgical and Materials Engineering, National Institute of Technology, Warangal 605 004, IndiaDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Warangal 605 004, India$$;Magnesium Technology Innovation Centre, RIAM, School of Materials Science and Engineering, Seoul National University, South Korea$$Magnesium Technology Innovation Centre, RIAM, School of Materials Science and Engineering, Seoul National University, South KoreaMagnesium Technology Innovation Centre, RIAM, School of Materials Science and Engineering, Seoul National University, South Korea$$

关键词: Mg;    HAP;    biodegradable;    extrusion;    hardness;    compressive strength.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

In the present study, it has been attempted to develop biodegradable Mg�?�HAP (magnesium�?�hydroxyapatite) composite materials for bone replacement. At first the HAP powders were prepared by chemical synthesis process and synthesized powders were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Synthesized powders contain HAP as a major phase with tricalcium phosphate (�?-TCP) as a minor phase. The Mg�?�HAP composites were prepared by adding different amounts of HAP powders to Mg melts and finally the billets were extruded. The microstructure of Mg�?�HAP composite was examined by optical microscope (OM). The presence of HAP in Mg matrix results in decrease of grain size of Mg�?�HAP composites. The theoretical and experimental hardness of the composites are compared with the addition of HAP. The tensile strength of composites is found to decrease with the addition of HAP, whereas compressive strength increases with HAP.

【 授权许可】

Unknown