钙-氧化锆体系的结构、形态特性及相稳定标准

IF 1.3 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Advances in Applied Ceramics Pub Date : 2021-09-15 DOI:10.1080/17436753.2021.1978266

Ankit Kumar, P. Kumar, A. S. Dhaliwal

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引用次数: 5

摘要

摘要:对钙掺杂量为4-16 mol-%的氧化锆球团在1400℃烧结后的物相演化进行了研究。从x射线衍射图可以看出，氧化锆只存在于单斜相中。然而，对掺钙氧化锆的Rietveld细化显示出单斜相和立方相的稳定性。随着钙掺杂量的增加，可以看到氧化锆中立方相的发展，当钙掺杂量为16 mol-%时，氧化锆的立方相几乎完全稳定(约97%)。利用场发射扫描电镜和能量色散光谱分别对烧结球团的微观结构和元素进行了分析。拉曼光谱研究证实了XRD的结果。期望本文的研究为其在氧传感器和固体电解质等新技术中的潜在应用开辟了新的通道。

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Structural, morphological properties and phase stabilisation criteria of the calcia-zirconia system

ABSTRACT The phase evolution studies of zirconia, with 4–16 mol-% doping of calcium, have been carried out after sintering the pellets at 1400°C. From the X-ray diffractometer patterns, it is evident that the zirconia exists only in the monoclinic phase. However, Rietveld refinement of calcium-doped zirconia revealed the stabilisation in the monoclinic and cubic phases. With increasing calcium doping, the development of the cubic phase in zirconia is seen and at 16 mol-% doping of calcium, almost fully stabilised cubic phase of zirconia (∼97%) is achieved. The microstructure and elemental analyses of the sintered pellets are done using a field-emission scanning electron microscopy and energy-dispersive spectroscopy, respectively. Raman spectroscopic studies validate the findings of XRD. It is expected that the present study on calcium-doped zirconia opened a new channel for its potential applications in new technology such as oxygen sensors and solid electrolyte.

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来源期刊

Advances in Applied Ceramics 工程技术-材料科学：硅酸盐

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

5.2 months

期刊介绍： Advances in Applied Ceramics: Structural, Functional and Bioceramics provides international coverage of high-quality research on functional ceramics, engineering ceramics and bioceramics.