Laser-driven shocks to explore the effects of aging on the adhesion of silver sintered on copper substrate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Adhesion Science and Technology Année : 2021

Laser-driven shocks to explore the effects of aging on the adhesion of silver sintered on copper substrate

Résumé

The adhesion of thin silver joints sintered on metallic substrates is a major issue for their potential use in power electronics modules. Here, we explore how laser shock-induced spallation can provide a way to study this adhesion. Due to wave interactions inside the shock-loaded assembly, dynamic tensile stresses are induced near the copper-silver interface, resulting in partial or full removal of the silver layer. In order to investigate the effects of aging on the interface strength, experiments are performed on both as-sintered and aged samples. Time-resolved measurements of the free surface velocity provide information on wave dynamics and interface failure, but finite-element simulations show that inferring a quantitative value of the bonding strength from these data is still challenging. Nevertheless, post-recovery observations provide original insight into the debonding process, including some complex effects of aging, consistent with trends reported in the literature.
Fichier principal
Vignette du fichier
JAST2021-author-version.pdf (1.62 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03426310 , version 1 (12-11-2021)

Identifiants

Citer

Thibaut de Rességuier, X Milhet, V Labussière, E Barraud, L Signor, et al.. Laser-driven shocks to explore the effects of aging on the adhesion of silver sintered on copper substrate. Journal of Adhesion Science and Technology, 2021, pp.1 - 18. ⟨10.1080/01694243.2021.1970396⟩. ⟨hal-03426310⟩
22 Consultations
61 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More