Highly dense 0.3CaCeNbWO 8 ‐0.7LaMnO 3  composite ceramics fabricated by cold sintering process | Zendy

Fu Zhilong | Zendy; Liu Yafei | Zendy; Zhang Bo | Zendy; Chang Aimin | Zendy

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Highly dense 0.3CaCeNbWO 8 ‐0.7LaMnO 3 composite ceramics fabricated by cold sintering process

Author(s) -

Fu Zhilong,

Liu Yafei,

Zhang Bo,

Chang Aimin

Publication year - 2020

Publication title -

journal of the american ceramic society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.9

H-Index - 196

eISSN - 1551-2916

pISSN - 0002-7820

DOI - 10.1111/jace.17353

Subject(s) - sintering , materials science , ceramic , composite number , microstructure , composite material , tetragonal crystal system , relative density , temperature coefficient , orthorhombic crystal system , phase (matter) , perovskite (structure) , crystal structure , crystallography , chemistry , organic chemistry

The cold sintering process (CSP) has been used for fabricating functional ceramics at a low sintering temperature. In this study, highly dense 0.3CaCeNbWO 8 ‐0.7LaMnO 3 composite ceramics have been successfully fabricated by CSP. The phase structure, microstructure, and electrical properties of composite ceramics have been investigated. The composite ceramic is mainly composed of a tetragonal CaCeNbWO 8 phase with scheelite structure and an orthorhombic LaMnO 3 phase with perovskite structure. The relative density of composite ceramic is 94.5%, and is higher than that of single phase ceramic. The resistivity of composite ceramic exhibits negative temperature coefficient characteristics, with an aging coefficient less than 2%. Such a sintering methodology is of great significance, since it provides a feasible idea for preparing composite ceramics.

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