La-Nb-O体系中非晶氧化物的结晶

Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy Pub Date : 1974-03-05 DOI:10.1246/CL.1974.221

S. Yajima, K. Okamura, T. Shishido

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引用次数: 4

摘要

采用冲击淬火法制备了La2O3·5nb2o5的非晶态氧化物。采用差热分析(DTA)和x射线衍射等方法研究了非晶态到平衡晶态的相变过程。从实验结果来看，La2O3·5Nb2O5的结晶过程主要表现为玻璃相→新的亚稳相→稳定相的两个连续转变。

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Crystallization of an Amorphous Oxide in La-Nb-O System

An amorphous oxide of which composition corresponds to La2O3·5Nb2O5was prepared by making use of an impact quenching technique. The phase transformation from an amorphous to an equilibrium crystalline state was studied by means of differential thermal analysis (DTA) and X-ray diffraction. From the experimental results, the crystallization process was characterized mainly by the two successive transitions, i.e., glassy phase → a new metastable phase → stable phase of La2O3·5Nb2O5.

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Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy

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