• Syeda Romana
• Dr P.LaxmiNarayana
• Dr.T.Nagaveni

Biocompatibility and biodegradability are the two important properties of magnesium alloys, resulting in increased use of magnesium alloys for biomedical applications. Hydroxyapatite is highly bioactive and has a chemical and crystallographic structure to bone. HA is a potential ceramic material for manufacturing MMC of Mg that will have the advantages of both Mg and HA. The need is to design magnesium alloys with suitable mechanical properties and corrosion rates that can be calibrated. Metal matrix composite made of magnesium alloys may be used as a solution to this problem. In the present work, an MMC made of magnesium alloy AZ31B as a matrix and hydroxyapatite (HA) particles as reinforcements have been examined for mechanical characteristics by varying the hydroxyapatite by 0%, 5%,10%, and 15% by weight. The structural properties of the produced samples were investigated by Rockwell hardness and Optical microscope. Optimization is carried out using Taguchi L27 orthogonal array. The mechanical properties of the MMC-HA were adjustable by the choice of HA particle size and distribution. Pin on disc machine was used for wear test to find the influence of HA on stir casted composite. The main objective is to minimize the resistance caused by wear. The optimum parameters for the low wear and friction are determined by Taguchi-ANOVA using Minitab-19, and analyzing the microstructure of the samples through an Optical microscope. The wear and coefficient of friction have been evaluated by varying factors like applied load 10, 20, and 30N, percentage of Hydroxyapatite with 5%, 10%, and 15 %, and speed of 250,500, and 750 rpm. At 10%reinforcement,10N, and speed at 250rpm, it was discovered that the wear and friction were reduced.

Magnesium; Hydroxyapatite; Metal matrix composite; Corrosion; Mechanical properties; Cytotoxicity

"MECHANICAL CHARACTERIZATION OF HYDROXYAPATITE REINFORCED WITH MAGNESIUM METAL MATRIX COMPOSITE FABRICATED BY STIR CASTING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.544-556, June-2019, Available :http://www.jetir.org/papers/JETIR1908E78.pdf

"MECHANICAL CHARACTERIZATION OF HYDROXYAPATITE REINFORCED WITH MAGNESIUM METAL MATRIX COMPOSITE FABRICATED BY STIR CASTING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp544-556, June-2019, Available at : http://www.jetir.org/papers/JETIR1908E78.pdf