SYNTHESS AND CHARACTERIZATION OF HYDROXYAPATTE/ALUMNA COMPOSTENANOPOWDERS WITH VARIOUS ALUMNA CONTENT
Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
UFGNSM03_251
تاریخ نمایه سازی: 10 تیر 1396
Abstract:
Preparation of hydroxyapatite - based nanocomposites and the use of o-Al2O3 particles as reinforcing phase, including ways to improve the mechanical properties of apatite bioceramics. In this study, hydroxyapatite falumina composite nanopowders with alumina content of 10,20 and 30% wt was synthesized via colloidal sol - gel method. Structural evolution during the synthesis of HAp/Al2O3 composite nanopowders is investigated by using simultaneous thermal analysis (STA), X-ray diffraction (XRD) and infrared spectroscopy (FT-IR). The microstructural and morphology were studied using scanning electron microscopy (SEM) . This study showed the successful formation of HAp phase after a low temperature calcination proccess at 300 °C. Increasing Al2O3 content has no effect on decomposition rate of HAp in to beta tri-calcium phosphate (B-TCP) and presence of Al2O3 particles among hydroxyapatite particles resulted in grain growth inhibition of HA particles.
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Authors
B. GARAKANI
Materials and Metallurgical Engineering Department, Iran University of Science and Technology Tehran, ۰۲۱, Iran
J. JAVADPOUR
Materials and Metallurgical Engineering Department, Iran University of Science and Technology, Tehran, ۰۲, Iran
H. R. SAMIM BANHASHEMI
Materials and Metallurgical Engineering Department, Iran University of Science and Technology, Tehran, ۰۲۱, Iran
HNASER ZOSHKI
Materials and Metallurgical Engineering Department, Iran University of Science and Technology, Tehran, ۰۲۱, Iran