摘要
首次采用高温快速合成方法成功地将比例适当的Sc2O3和WO3粉末合成了形貌良好的Sc2(WO4)3材料,并对该材料使用了多种手段进行分析。拉曼光谱分析说明在合适工艺参数下高温快速烧结可避免原料挥发,使原料完全参与反应。X射线衍射(XRD)分析表明合成物主要是Sc2(WO4)3材料,属空间群Pnca,具有正交结构,可以呈现负热膨胀特性。扫描电镜(SEM)发现合成物晶粒分散性好,呈链状并互相纠缠在一起。能量散射光谱(EDS)分析显示合成物内部成分分布均匀。
Sc2（WO4）3 ceramic had been successfully and rapidly synthesized with a proper proportion of Sc2O3 and WO3 by high-heat and fast way for the first time. The microstructure observation, component and phases analysis of this ceramic were performed by a Raman spectrometer, scanning electron microscopy, energy-dispersive spectrometer and X-ray diffractometer. The Raman spectrum revealed that the volatility of WO3 can be avoided in the high-heat and fast synthesis and that the raw materials can react completely under suitable processing parameters. The analysis by a X-ray diffractometer indicated that the sample of Sc2（WO4）3 with orthorhombic structure and blongs to space group Pnca. The investigation by a scanning electron （SEM） and energy-dispersive spectrometer （EDS） showed that the ceramic was composed of chaining crystal in which the stoichiometric proportion of elments was almost identical.
出处
《唐山师范学院学报》
2010年第2期55-58,共4页
Journal of Tangshan Normal University
