Ceramics-Silikáty 58, (4) 303 - 307 (2014) |
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A NEW METHOD FOR SYNTHESIS OF FORSTERITE NANOMATERIALS FOR BIOIMPLANTS
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Naghiu M. A. 1, Gorea M. 1, Kristaly F. 2,
Tomoaia-Cotisel M. 1
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1 Department of Chemical Engineering, Babes-Bolyai University, Faculty of Chemistry and Chemical Engineering,
Cluj-Napoca, Romania
2 Institute of Mineralogy and Geology, University of Miskolc,
Egyetemváros, Miskolc, Hungary
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Keywords: Magnesium silicates, Biomaterial, Precipitation method, Particle size, Thermal analysis
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Nanocrystalline forsterite (Mg2SiO4) was synthesized by the precipitation method using Mg(NO3)2∙6H2O, C8H20O4Si (TEOS)
and sodium hydroxide as pH regulator as starting materials. The thermal behaviour of the mixture was investigated by a
MOM derivatograh. According to DTA results the initial crystallization temperature of the forsterite is about 800oC. The
powder calcined at 900oC was characterized by X ray diffraction (XRD). The forsterite was noticed as the main crystalline
phase besides of small amounts of periclase (MgO). Polycrystalline forsterite with uniform sized particles and spherical
shape is evidenced by electronic microscopy (TEM, SEM). Grain size of forsterite powder according to Counter Coulter-type
laser granulometer results is in the range of 10 - 42 nm. |
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