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FUNCTIONAL AND STRUCTURAL CHARACTERIZATIONS OF KRLSNOTTE GLASS- CERAMICS ORIENTED WITH UST TECHNIQUE

机译:面向UST技术的克尔诺特玻璃陶瓷的功能和结构特征

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Transparent glass ceramics with highly oriented surface crystalline layers of fresnoite Ba_2TiSi_2O_8 were prepared by heat treatment of precursor glasses in BaO-TiO_2-SiO_2 system. The orientation along oaxis of fresnoite crystals normal to the glass surface was evaluated by the surface XRD patterns, and it was remarkably enhanced by ultrasonic surface treatment (UST) before the crystallization using fresnoite powder suspension in water. 'The effect of UST disappeared alter heat treatment in the glass transition region, and the mechanism of UST was discussed on the basis of the persistence at elevated temperatures.
机译:通过在BaO-TiO_2-SiO_2体系中对前驱体玻璃进行热处理,制备了具有高取向的贝氏体Ba_2TiSi_2O_8表面结晶层的透明玻璃陶瓷。通过表面X射线衍射图评估了垂直于玻璃表面的马氏体晶体沿轴心的取向,并且在使用水中的马氏体粉末悬浮液进行结晶之前,通过超声表面处理(UST)显着增强了该取向。 ``在玻璃化转变区域中进行热处理后,UST的影响消失了,并基于在高温下的持久性讨论了UST的机理。

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