Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-1057 - C7-1060
DOI http://dx.doi.org/10.1051/jp4:19937164
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-1057-C7-1060

DOI: 10.1051/jp4:19937164

Damages and cracks in ceramic/metal interfaces

D. JUVE, P. LOURDIN, B. MBONGO, N. BOUKHEIT and D. TREHEUX

Laboratoire Matériaux-Mécanique Physique, URA 447 du CNRS, Ecole Centrale de Lyon, BP. 163, 69131 Ecully cedex, France


Abstract
When metal/ceramic junctions are achieved by solid state bonding process, damages and cracks are often observed near by the interface. This paper focuses on the mechanical origin of the embrittlement. The main causes are : - residual stresses due to the mismatch in the mechanical properties of the materials to be joined - friction of metal on the ceramic surface at the interface during bonding - decrease of the toughness of the ceramic close to the interface consecutively to the diffusion of the metallic specie into the ceramic.



© EDP Sciences 1993