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Chemical and morphological analysis of sol-derived KCa_2Nb_3O_10

机译:溶胶衍生的KCa_2Nb_3O_10的化学和形态分析

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摘要

The chemical and morphological properties of a sol-derived layered perovskite compound, KCa_2Nb_3O_10 (KCN), are presented. Development of this compound is motivated by its use as an interphase fiber-coating material for ceramic matrix composites (CMC's). In such systems, this material is to be placed between the fiber and matrix to control crack propagation in the vicinity of the fiber, thereby enhancing toughness. Comparative analyses are performed between known bulk specimens of KCN and the sol-derived product using transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). The suitability of the sol-derived KCN for CMC applications is demonstrated through microstructure and chemical composition similar to that of the known bulk KCN samples.
机译:提出了溶胶衍生的层状钙钛矿化合物KCa_2Nb_3O_10(KCN)的化学和形态学性质。该化合物作为陶瓷基复合材料(CMC's)的相间纤维涂层材料的使用,推动了该化合物的开发。在这样的系统中,该材料将被放置在纤维和基体之间,以控制裂纹在纤维附近的传播,从而提高韧性。使用透射电子显微镜(TEM)和能量色散光谱(EDS)在已知的KCN大量样品和溶胶衍生产品之间进行比较分析。溶胶衍生的KCN对于CMC应用的适用性通过与已知的大量KCN样品相似的微观结构和化学组成得以证明。

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