Fracture toughness of alumina-zirconia composites

被引:65
作者
Cesari, F
Esposito, L
Furgiuele, FM
Maletta, C
Tucci, A
机构
[1] Univ Bologna, Fac Engn, DIEM, I-40136 Bologna, Italy
[2] Ctr Ceram, I-40138 Bologna, Italy
[3] Univ Calabria, Dept Engn Mech, I-87030 Commenda Di Rende, Italy
关键词
Al2O3-ZrO2; composites; stress intensity factor; fracture toughness; zirconia t -> m phase transformation;
D O I
10.1016/j.ceramint.2005.02.012
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
The toughening effect in the alumina-zirconia system was simulated by a simple model based oil two concentric spheres and a crack in the matrix, near the interface of the inclusion. The effects due to the zirconia t -> m phase transformation and the thermal stresses, which develop during the cooling stage of sintering, were also taken into account. The toughening effect was simulated imposing a temperature field both to the matrix and the inclusion and the analysis was carried out at different temperatures. The results of the simulation at room temperature were compared with the experimental data of fracture toughness obtained testing alumina-zirconia composites, containing different percentages of the oxides.(c) 2005 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码:249 / 255
页数:7
相关论文
共 19 条
[1]   A CRITICAL-EVALUATION OF INDENTATION TECHNIQUES FOR MEASURING FRACTURE-TOUGHNESS .1. DIRECT CRACK MEASUREMENTS [J].
ANSTIS, GR ;
CHANTIKUL, P ;
LAWN, BR ;
MARSHALL, DB .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1981, 64 (09) :533-538
[2]   WEAKEST LINK THEORY REFORMULATED FOR ARBITRARY FRACTURE CRITERION [J].
BATDORF, SB ;
HEINISCH, HL .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1978, 61 (7-8) :355-358
[3]   Phase transitions in zirconium dioxide and related materials for high performance engineering ceramics [J].
Bocanegra-Bernal, MH ;
De la Torre, SD .
JOURNAL OF MATERIALS SCIENCE, 2002, 37 (23) :4947-4971
[4]  
CLAUSSEN N, 1983, ADV CERAMICS SCI TEC, V2
[5]  
*EUR STAND EN, 1995, 8431 EN EUR STAND 1
[6]   Mechanical properties of infiltrated alumina-Y-TZP composites [J].
Glass, SJ ;
Green, DJ .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1996, 79 (09) :2227-2236
[8]   CALCULATION OF STRESS INTENSITY FACTORS FOR COMBINED TENSILE AND SHEAR LOADING [J].
HELLEN, TK ;
BLACKBURN, WS .
INTERNATIONAL JOURNAL OF FRACTURE, 1975, 11 (04) :605-617
[9]   Cracking of laminates subjected to biaxial tensile stresses [J].
Hillman, C ;
Suo, ZG ;
Lange, FF .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1996, 79 (08) :2127-2133
[10]   MECHANICAL-PROPERTIES OF ZRO2-TOUGHENED AL2O3 CERAMICS FROM CVD POWDERS [J].
HORI, S ;
YOSHIMURA, M ;
SOMIYA, S ;
KURITA, R ;
KAJI, H .
JOURNAL OF MATERIALS SCIENCE LETTERS, 1985, 4 (04) :413-416