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) C7-795 - C7-801
DOI http://dx.doi.org/10.1051/jp4:19937126
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) C7-795-C7-801

DOI: 10.1051/jp4:19937126

Analyse de la résistance mécanique d'une interface métal-céramique par l'essai de flexion 4 points : application à des couples metal (Pd-Ag, Pd-Au)-céramique dentaire

R. CHARNAY and P. GUIRALDENQ

Ecole Centrale de Lyon, Département Matériaux-Mécanique Physique, BP. 163, 69131 Ecully, France


Abstract
Different semi precious alloys (Pd-Ag, Pd-Au) have been studied after thermal oxidation treatments to analyze the mechanical improvement of the interface between the metal and the ceramic. Using the four point bending test, the authors have analyzed the different steps corresponding to the mechnical evolution of the bi-material : cracking energy on the surface, relaxation energy after first cracking, propagation energy of cracks at the interface zone. It has been shown that some alloys only have a high resistance to the interface cracking and the role played by the interface reactions to improve this property.



© EDP Sciences 1993