Preparation of Sc2Mo3O12 and Characterization of its Negative Thermal Expansion Property
Preparation of Sc2Mo3O12 and Characterization of its Negative Thermal Expansion Property
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Sc2Mo3O12的制备及其负热膨胀性能表征
DOI：
10.4028/www.scientific.net/amm.320.181
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Jun Zhu
中科院分区：
文献类型：
--
作者：
Jun Li;Xiao;Jun Zhu
采用固相法制备了负热膨胀（NTE）材料Sc2Mo3O12。分别通过粉末X射线衍射(XRD)、扫描电子显微镜(SEM)和热重-差热分析(TG-DSC)检测所得产物的相结构、形貌和热稳定性。为了研究其负热膨胀特性，采用了两种方法。一种是基于原位 XRD 结果，通过不同温度下获得的电池参数计算热膨胀系数（CTE）。另一种是基于热机械分析（TMA），通过不同温度下 Sc2Mo3O12 棒的长度计算 CTE。还讨论了这两种方法之间的差异。
Negative thermal expansion (NTE) material Sc2Mo3O12 was prepared by solid-state method. The phase structure, morphology and the thermal stability of the obtained products were examined by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric-differential thermal analysis (TG-DSC), respectively. To study its negative thermal expansion property, two methods were utilized. One is based on the in-situ XRD results and the thermal expansion coefficient (CTE) was calculated by the cell parameters obtained at different temperatures. Another is based on the thermo-mechanical analysis (TMA) and the CTE was calculated by the length of Sc2Mo3O12 bar at different temperatures. The differences between these two methods were also discussed.