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首页> 外文期刊>CERAMICS INTERNATIONAL >Effects of CdF_2 and WO_3 additions on the microstructural and thermal properties of TeO_2-CdF_2-WO_3 glass system
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Effects of CdF_2 and WO_3 additions on the microstructural and thermal properties of TeO_2-CdF_2-WO_3 glass system

机译：添加CdF_2和WO_3对TeO_2-CdF_2-WO_3玻璃体系的微观结构和热性能的影响

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This paper presents microstructural characterization investigations and the crystallization behavior of some glasses in the ternary TeO_2-CdF_2-WO_3 system. Differential thermal analysis (DTA) showed that the glass forming ability of the ternary TeO_2-CdF_2-WO_3 system which is in between the values of 21 and 34, is lower than most of the studied tellurite glasses. It is possible to obtain amorphous glass structure for the compositions of 0.80TeO_2-0.10CdF_2-0.10WO_3 and 0.75TeO_2-0.10CdF_2-0.15WO_3. On the other hand, the 0.85TeO_2-0.10CdF_2-0.05WO_3 and 0.75TeO_2-0.15CdF_2-0.10WO_3 compositions do not form glass with conventional quenching techniques. During crystallization of these glasses, the formation of the alpha, delta and gamma TeO_2, WO_3 and CdTe_2O_5 phases were observed with the addition of a new unidentified phase. Three compositions of 0.85TeO_2-0.10CdF_2-0.05WO_3, 0.80TeO_2-0.10CdF_2-0.10WO_3 and 0.75TeO_2-0.10CdF_2-0.15WO_3 demonstrated two exothermic peaks in the DTA curves. SEM/EDS investigations confirmed the existence of the alpha, delta and gamma TeO_2, WO_3 and CdTe_2O_5 phases for the annealed glasses. The microstructure of the 8-TeO_2 phase was clearly observed in the as-cast 0.75TeO_2-0.10CdF_2-0.15WO_3 composition.
机译：本文介绍了三元TeO_2-CdF_2-WO_3体系中某些玻璃的微结构表征研究和结晶行为。差热分析（​​DTA）表明，三元TeO_2-CdF_2-WO_3体系的玻璃形成能力介于21和34之间，低于大多数研究的碲酸盐玻璃。对于0.80TeO_2-0.10CdF_2-0.10WO_3和0.75TeO_2-0.10CdF_2-0.15WO_3的组成，可以获得非晶玻璃结构。另一方面，用常规的淬火技术，0.85TeO_2-0.10CdF_2-0.05WO_3和0.75TeO_2-0.15CdF_2-0.10WO_3组合物不能形成玻璃。在这些玻璃的结晶过程中，观察到α，δ和γTeO_2，WO_3和CdTe_2O_5相的形成，并添加了一个新的未知相。 0.85TeO_2-0.10CdF_2-0.05WO_3、0.80TeO_2-0.10CdF_2-0.10WO_3和0.75TeO_2-0.10CdF_2-0.15WO_3的三种成分在DTA曲线中显示了两个放热峰。 SEM / EDS研究证实了退火玻璃存在α，δ和γTeO_2，WO_3和CdTe_2O_5相。在铸态的0.75TeO_2-0.10CdF_2-0.15WO_3组成中可以清楚地观察到8-TeO_2相的微观结构。

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