Inelastic ferroelastic behavior of LaCoO3 based ceramics under contact loading

被引：0
|
作者：
Orlovskaya, N [1 ]
Gonzalez, IN [1 ]
机构：
[1] Drexel Univ, Dept Mat Engn, Philadelphia, PA 19104 USA
来源：
JOURNAL OF MATERIALS PROCESSING & MANUFACTURING SCIENCE | 2000年 / 9卷 / 01期
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The behavior of LaCoO3 based ceramics under contact loading has been investigated. Three compositions have been chosen for investigation: pure LaCoO3 , La0.8Sr0.2CoO3 and La0.8Ca0.2CoO3 . Pure LaCoO3 perovskite shows an enhanced elasticity compared to the Sr and Ca doped materials under contact loading with a conical indenter. At a low 0.3 N load porous LaCoO3 exhibits purely elastic behavior, while Sr and Ca doped perovskites exhibit some amount of plastic deformation. Under certain conditions a ferroelastic hysteresis loop was obtained for Ca substituted perovskite. Possible explanations for both inelastic and ferroelastic behavior are discussed.
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页码：53 / 63
页数：11
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