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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Phase evolution in oxy-fluoride glass ceramics
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Phase evolution in oxy-fluoride glass ceramics

机译：氟氧化物玻璃陶瓷中的相变

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The phase evolution of Er3+ doped oxy-fluoride glass ceramics as a function of temperature has been investigated. Differential thermal analysis showed two successive crystallization exotherms. The first, around 480 degreesC, was characterized using X-ray diffractometry (XRD) and transmission electron microscopy (TEM) and was related to the formation of a nanocrystalline PbF2 phase, hosting most of the rare earth ions. The second crystallization event was studied using XRD, scanning electron microscopy and TEM. It was established that nucleation occurred at the surface, accompanied by Pb loss. Cd-silicate phase together with Zn-fluoride and an Al-Zn oxide phases were present according to energy dispersive X-ray analysis. Not all peaks in XRD traces could be assigned to known compounds. However, several reflections matched well to either CdSiO3 (JCPDS [35-810]) or ZnF2 (JCPDS [71-1971]). (C) 2003 Elsevier B.V. All rights reserved. [References: 10]
机译：研究了掺Er3 +的氟氧化物玻璃陶瓷的相变随温度的变化。差热分析显示两个连续的结晶放热。第一个温度约为480摄氏度，使用X射线衍射（XRD）和透射电子显微镜（TEM）进行表征，并与形成包含大部分稀土离子的纳米晶PbF2相有关。使用XRD，扫描电子显微镜和TEM研究了第二次结晶事件。可以确定的是，在表面出现了成核现象，并伴随着铅的流失。根据能量色散X射线分析，存在Cd-硅酸盐相以及氟化锌和Al-Zn氧化物相。并非XRD迹线中的所有峰都可以分配给已知化合物。但是，一些反射与CdSiO3（JCPDS [35-810]）或ZnF2（JCPDS [71-1971]）都很好地匹配。 （C）2003 Elsevier B.V.保留所有权利。 [参考：10]

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