Stress-strain behavior during compression of polycrystalline La1-xCaCoO3 ceramics

被引:35
作者
Faaland, S
Grande, T
Einarsrud, MA [1 ]
Vullum, PE
Holmestad, R
机构
[1] Norwegian Univ Sci & Technol, Dept Mat Technol, N-7491 Trondheim, Norway
[2] Norwegian Univ Sci & Technol, Dept Phys, N-7491 Trondheim, Norway
关键词
D O I
10.1111/j.1551-2916.2005.00165.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Mechanical stress-strain behavior of LaCoO3, La0.8Ca0.2CoO3, and La0.7Ca0.3CoO3 was studied under compression at 25 degrees and 300 degrees C. A hysteresis in the stress-strain relationship due to reorientation of ferroelastic domains (deformation twins) was observed, and a remanent strain is measured after unloading. The cohersive stress, defined as the maximum in effective elastic compliance during first loading, increases with substitution of Ca for La and decreases with increasing temperature. Domain reorientation was confirmed by X-ray diffraction of surfaces parallel and perpendicular to the loading direction. LaCoO3 can be regarded as a soft ferroelastic material while the 30% Ca-substituted material is a hard ferroelastic. The hysteresis of the stress-strain relationship was clearly dependent on both composition and temperature.
引用
收藏
页码:726 / 730
页数:5
相关论文
共 17 条
[1]   Chemically-induced stresses in ceramic oxygen ion-conducting membranes [J].
Atkinson, A ;
Ramos, TMGM .
SOLID STATE IONICS, 2000, 129 (1-4) :259-269
[2]   Ferroelastic and plastic deformation of t′-zirconia single crystals [J].
Baither, D ;
Bartsch, M ;
Baufeld, B ;
Tikhonovsky, A ;
Foitzik, A ;
Rühle, M ;
Messerschmidt, U .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2001, 84 (08) :1755-1762
[3]  
Bouwmeester HJM, 1996, CRC HDB SOLID STATE
[4]  
FAALAND S, UNPUB PHASE TRANSITI
[5]  
FOITZIK A, 1993, Z METALLKD, V84, P397
[6]   PROPERTIES OF LACO1-TCRTO3 .1. SOLID SOLUBILITY, THERMAL-EXPANSION AND STRUCTURAL TRANSITIONS [J].
GILBU, B ;
FJELLVAG, H ;
KJEKSHUS, A .
ACTA CHEMICA SCANDINAVICA, 1994, 48 (01) :37-45
[7]   Contribution from ferroelastic domain switching detected using X-ray diffraction to R-Curves in lead zirconate titanate ceramics [J].
Glazounov, AE ;
Kungl, H ;
Reszat, JT ;
Hoffmann, MJ ;
Kolleck, A ;
Schneider, GA ;
Wroblewski, T .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2001, 84 (12) :2921-2929
[8]   Ferroelastic behavior of LaCoO3-based ceramics [J].
Kleveland, K ;
Orlovskaya, N ;
Grande, T ;
Moe, AMM ;
Einarsrud, MA ;
Breder, K ;
Gogotsi, G .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2001, 84 (09) :2029-2033
[9]   Crystal structure and metal-insulator transition of La1-xSrxCoO3 [J].
Mineshige, A ;
Inaba, M ;
Yao, TS ;
Ogumi, Z ;
Kikuchi, K ;
Kawase, M .
JOURNAL OF SOLID STATE CHEMISTRY, 1996, 121 (02) :423-429
[10]  
MINISHIGE A, 1996, J SOLID STATE CHEM, V121, P423