Strength and failure modes of ceramic multilayers

被引：9

作者：

Sorensen, Bent F. ^{[1
]}

Toftegaard, Helmuth ^{[1
]}

Linderoth, Soren ^{[2
]}

Lundberg, Mats ^{[2
]}

Feih, Stefanie ^{[3
]}

机构：

[1] Tech Univ Denmark, Sect Composites & Mat Mech, Dept Wind Energy, DK-4000 Roskilde, Denmark

[2] Tech Univ Denmark, DTU Energy Convers, DK-4000 Roskilde, Denmark

[3] RMIT Univ, Sch Aerosp Mech & Mfg Engn, Melbourne, Vic 3001, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 16期

关键词：

Fracture; Strength; Residual stresses; Fuel cells; Multilayers; OXIDE FUEL-CELLS; MECHANICAL-PROPERTIES; LAMINAR CERAMICS; CRACK DEFLECTION; FRACTURE ENERGY; STRESS; COMPOSITES; INTERFACE; POROSITY; FILMS;

D O I：

10.1016/j.jeurceramsoc.2012.06.012

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：

A model was developed for the prediction of the tensile strength of thin, symmetric 3-layer sandwich specimens. The model predictions rationalize the effect of heat-treatment temperature on the strength of sandwich specimens consisting of an YSZ (Yttria-Stabilized Zirconia) substrate coated with porous NiO-YSZ layers. The model accounts for two different failure modes. Coated YSZ specimens heat-treated below 1200 degrees C were predicted to fail from flaws in the substrate while specimens heat-treated at higher temperatures were predicted to fail from channeling cracks forming in the coating and propagating into the substrate. These predictions are consistent with microstructural observations of the fracture surfaces. A good agreement was found between the measured strength values and model predictions. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：4165 / 4176

页数：12

共 37 条

[1]

[Anonymous], 2005, C127505 ASTM

[2] Residual stress and fracture of laminated ceramic membranes [J].

Atkinson, A ;

Selçuk, A .

ACTA MATERIALIA, 1999, 47 (03) :867-874

[3] Mechanical behaviour of ceramic oxygen ion-conducting membranes [J].

Atkinson, A ;

Selçuk, A .

SOLID STATE IONICS, 2000, 134 (1-2) :59-66

[4] CRACKING OF THIN BONDED FILMS IN RESIDUAL TENSION [J].

BEUTH, JL .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1992, 29 (13) :1657-1675

[5] 2 EDGE-BONDED ELASTIC WEDGES OF DIFFERENT MATERIALS AND WEDGE ANGLES UNDER SURFACE TRACTIONS [J].

BOGY, DB .

JOURNAL OF APPLIED MECHANICS, 1971, 38 (02) :377-&

[6] Mechanical characterization of Al2O3/ZrO2 hybrid laminates [J].

Cai, PZ ;

Green, DJ ;

Messing, GL .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1998, 18 (14) :2025-2034

[7]

Cai PZ, 1997, J AM CERAM SOC, V80, P1940, DOI 10.1111/j.1151-2916.1997.tb03076.x

[8] CRACKING AND STRESS REDISTRIBUTION IN CERAMIC LAYERED COMPOSITES [J].

CHAN, KS ;

HE, MY ;

HUTCHINSON, JW .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 167 (1-2) :57-64

[9] EDGE-BONDED DISSIMILAR ORTHOGONAL ELASTIC WEDGES UNDER NORMAL AND SHEAR LOADING [J].

DUNDURS, J ;

BOGY, DB .

JOURNAL OF APPLIED MECHANICS, 1969, 36 (03) :650-&

[10] THE THERMOMECHANICAL INTEGRITY OF THIN-FILMS AND MULTILAYERS [J].

EVANS, AG ;

HUTCHINSON, JW .

ACTA METALLURGICA ET MATERIALIA, 1995, 43 (07) :2507-2530

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