Mechanochemical Synthesis of Hydroxyapatite Bioceramics through Two Different Milling Media
This work presents the wet mechanochemical synthesis of hydroxyapatite (HA) powder through two different milling media.The effect of milling media on powder properties was investigated.Two types of medium:water and ethanol were chosen with 370 rpm milling speed for 15 hours time.Characterization of synthesized powders was accomplished by X-ray diffraction (XRD) analysis.The green compacts were prepared and sintered in atmosphere condition at various temperatures ranging from 900℃-1300℃.The mechanical and physical properties were evaluated under Vickers microhardness test and density measurement.Both of synthesis mediums yielded HA phases in the synthesized powders as detected by the peaks obtained in XRD analysis.Compacts synthesized in water medium (M1) showed a maximum density,99% sintered at 1000℃ and 1300℃.However,the hardness in water medium is closely similar to the ethanol medium as a function of sintering temperature where the maximum hardness was found in compacts synthesized in ethanol medium (M2) sintered at 1300℃ (5.8GPa).The microstructure observed from SEM analysis was in line with the density obtained as the surface of sintered compacts synthesized in water medium (M1) contained less pores with large grain growth.
Mechanochemical Hydroxyapatite Water Ethanol Sintering Dense Bioceramics
Sharifah Adzila lis Sopyan Siti Farius Nurfahana Ramesh Singh
Department of Engineering Design & Manufacture, Faculty of Engineering, University of Malaya,Kuala L Department of Manufacturing and Materials Engineering, Faculty of Engineering,International Islamic Department of Engineering Design & Manufacture, Faculty of Engineering, University of Malaya,Kuala L
国际会议
广州
英文
254-257
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）