Papers by Keyword: Biomorphic Ceramics

Abstract: Biomorphic TiO2 was prepared by high temperature pyrolysis and a modified sol-gel route. The morphology and microstructure of TiO2 samples were characterized by scanning electron microscopy. The phase composition of the resulting sample was analyzed by X-ray diffraction. The results suggest that the biomorphic TiO2 mainly consists of rutile TiO2, and replicates the shape and part microstructure of the carbon template.

Abstract: Biomorphic ceramics is a novel inorganic materials with hierarchical structures derived from natural biological structures. In this paper, the properties of biomorphic materials are described. The preparation technologies of converting biological structures into biomorphic ceramics are summarized. At last the application and prospects of the ceramics in this field also are analyzed.

Abstract: Biomorphic SnO₂/C ceramic has been prepared by molding into a composite billet and carbothermal-reduction under vacuum from ramie fibers/Sn(OH)₄ precursors. The phase composition and microstructure of the prepared samples were characterized. The effects of the carbonization temperature and the other factors on the crystal structure, morphology and ingredients of the prepared samples were discussed. The results showed that there is no peak corresponding to carbon. So, it is inferred that the carbon exists in amorphous form and the sintering temperature have significant effects on the microstructure of SnO₂ in biomorphic SnO₂/C ceramics. The prepared products at the sintering temperature between 480°C and 630°C are biomorphic SnO₂/C ceramics.