Modeling the temperature and porosity dependent Young's modulus of porous ceramics

被引：11
|
作者：
Zhang, Xuyao [1 ,2 ]
Li, Weiguo [1 ,2 ]
Kou, Haibo [1 ]
Shao, Jiaxing [1 ]
Deng, Yong [1 ]
Ma, Jianzuo [1 ]
机构：
[1] Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Chongqing Key Lab Heterogeneous Mat Mech, Chongqing 400030, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2018年 / 5卷 / 01期
基金：
中国国家自然科学基金;
关键词：
temperature-dependent; porous ceramics; Young's modulus; theoretical models; POLYCRYSTALLINE REFRACTORY MATERIALS; ELASTIC-MODULUS; PORE STRUCTURE; ALUMINA;
D O I：
10.1088/2053-1591/aaa7cb
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, a new characteristic temperature, at which the grain boundary sliding begins to significantly influence the Young's modulus of polycrystalline ceramics, was defined. Moreover, based on our previous work, a new temperature-dependent Young's modulus model was proposed considering the effect of grain boundary sliding for polycrystalline ceramics. Then, according to a verified conclusion that temperature and porosity could be taken as independent variables within an appropriate temperature range, a series of temperature- dependent Young's modulus models for porous ceramics are presented. The present models could help better understand the behavior and performance of porous ceramics, and provide a new method to describe the temperature dependent Young's modulus of porous ceramics.
引用
收藏
页数：7
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