Microstructure and mechanical properties of Mg-nano/micro hydroxy apatite composites made by powder metallurgy method

In this study Magnesium-Hydroxyapatite (Mg-HA) composites were prepared by powder metallurgy method using pure magnesium and synthesized hydroxyapatite powders. HA was synthesized in nano and micro scales powder by wet chemistry precipitation method and Mg-HA composites made in ; 1, 3, 5 and 10 wt. % nano and 1, 5, 10 and 15 wt. % micro scale HA powders. The effects of particle size and amount of HA on microstructure and mechanical behavior of composites were investigated. Significant improvement in mechanical properties was observed by using nano HA for reinforcing Mg matrix because the HA distribution were better in nano-scale composites than the micro scale. The theoretical density of the composite prepared by adding 3 wt. % HA nano particles reached to 96 %, with 80.88 V hardness, and 131.52 MPa Ultimate shear stress, as optimum mechanical properties.

[1]  K. Nakata,et al.  Gas tungsten arc welding of fine-grained AZ31B magnesium alloys made by powder metallurgy , 2014 .

[2]  Yufeng Zheng,et al.  Microstructure and characteristics of interpenetrating β-TCP/Mg–Zn–Mn composite fabricated by suction casting , 2014 .

[3]  E. Ivanova,et al.  6 – Cytotoxicity and biocompatibility of metallic biomaterials , 2014 .

[4]  E. Ivanova,et al.  5 – Metallic biomaterials: types and advanced applications , 2014 .

[5]  S. Ramesh,et al.  Sintering and mechanical properties of MgO-doped nanocrystalline hydroxyapatite , 2013 .

[6]  K. Khalil,et al.  Effect of high-frequency induction heat sintering conditions on the microstructure and mechanical properties of nanostructured magnesium/hydroxyapatite nanocomposites , 2012 .

[7]  K. Nie,et al.  Effect of submicron size SiC particulates on microstructure and mechanical properties of AZ91 magnesium matrix composites , 2010 .

[8]  R. Mahmudi,et al.  The microstructure, tensile, and shear deformation behavior of an AZ31 magnesium alloy after extrusion and equal channel angular pressing , 2010 .

[9]  M. Mahabole,et al.  Study of nanobiomaterial hydroxyapatite in simulated body fluid: Formation and growth of apatite , 2010 .

[10]  R. Mahmudi,et al.  Effect of Ca additions on the microstructure, thermal stability and mechanical properties of a cast AM60 magnesium alloy , 2010 .

[11]  M. Rahimian,et al.  INVESTIGATION OF PARTICLE SIZE AND AMOUNT OF ALUMINA ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL MATRIX COMPOSITE MADE BY POWDER METALLURGY , 2010 .

[12]  M. Chu,et al.  Preparation and characterization of nano-hydroxyapatite powder using sol-gel technique , 2009 .

[13]  William R. Heineman,et al.  Revolutionizing biodegradable metals , 2009 .

[14]  Peng Zhao,et al.  Poly (d,l-lactide)/nano-hydroxyapatite composite scaffolds for bone tissue engineering and biocompatibility evaluation , 2008, Journal of materials science. Materials in medicine.

[15]  M. Störmer,et al.  Biodegradable magnesium-hydroxyapatite metal matrix composites. , 2007, Biomaterials.

[16]  R. E. Smallman,et al.  Physical metallurgy and advanced materials , 2007 .

[17]  Q. Jiang,et al.  Fabrication of TiB2 particulate reinforced magnesium matrix composites by powder metallurgy , 2004 .

[18]  C. Lim,et al.  Effect of reinforcements on strength of Mg9%Al composites , 2004 .

[19]  C. Betzel,et al.  Synthesis of stoichiometric nano crystalline hydroxyapatite by ethanol-based sol–gel technique at low temperature , 2004 .

[20]  Zhoucheng Wang,et al.  Preparation and characterization of nano-sized hydroxyapatite particles and hydroxyapatite/chitosan nano-composite for use in biomedical materials , 2002 .

[21]  A. Ahmed,et al.  EFFECT OF ALUMINA ADDITIONS ON THE MECHANICAL BEHAVIOR OF PM MMC WITH LOW STRENGTH MATRIX , 2000 .

[22]  M. Tan,et al.  Powder metal matrix composites: selection and processing , 1998 .

[23]  R. Valiev,et al.  Microhardness measurements and the Hall-Petch relationship in an AlMg alloy with submicrometer grain size , 1996 .

[24]  R. Pilliar.  Modern metal processing for improved load-bearing surgical implants. , 1991, Biomaterials.