Influence of mechanical activation on sphene based ceramic material synthesis

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• 作者：Jelena Pantić ; ^a ; ^{jelena.pantic@vinca.rs} ; Aleksandar Kremenović ; ^b ; Anja Doš ; en^a ; Marija Prekajski^a ; Nadež ; da Stanković ; ^a ; Zvezdana Baš ; č ; arević ; ^c ; Branko Matović ; ^a
• 关键词：Sphene ; Mechanochemistry ; Rietveld refinement ; SEM/EDS
• 刊名：Ceramics International
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：39
• 期：1
• 页码：483-488
• 全文大小：865 K

文摘

Sphene (CaTiSiO₅), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO₃, TiO₂ and SiO₂ using vibro-milling for homogenization and activation of precursors. The mechanochemical process initially yielded amorphous powders, which on further calcination, crystallized to yield sphene ceramic. The evolution of the phase composition with thermal treatment was investigated by X-ray powder diffraction (XRPD). Powder morphology and particle size distribution were analyzed by scanning electron microscopy (SEM) and laser diffraction, respectively. Rietveld refinement was employed to get the structural information of the synthesized powder. Densification and microstructure evolution was determined by means of density and scanning electron microscopy (SEM). The most favorable conditions for mechanical activation and synthesis of sphene based ceramic material are reported.