Toggle Main Menu Toggle Search

Open Access padlockePrints

The Newcastle University research output collection, currently available on ePrints, will shortly be moving to a new open repository platform, Figshare. To prepare for the data migration we have paused adding new content to ePrints, and will resume once the new repository is launched. During this time you will continue to have access to ePrints (but no new content will appear). We will share updates here when available.

New mechanisms of void growth in Au-Al wire bonds: Volumetric shrinkage and intermetallic oxidation

Lookup NU author(s): Dr Stevin PramanaORCiD

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

This letter examines void nucleation and coalescence in Au-Al wire bonds using high-resolution transmission electron microscopy. It is found that void formation is not only attributed to Kirkendall-type migration as conventionally believed, but also due to volumetric shrinkage and intermetallic oxidation. A volumetric shrinkage of a few percent is associated with intermetallic growth and phase transformations. Intermetallic oxidation occurs at the intermetallics/alumina interface and the migration of oxygen towards the intermetallics leads to void growth and thickening of the surrounding oxide walls. © 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Xu H, Liu C, Silberschmidt VV, Pramana SS, White TJ, Chenc Z, Acoffa VL

Publication type: Article

Publication status: Published

Journal: Scripta Materialia

Year: 2011

Volume: 65

Issue: 7

Pages: 642-645

Print publication date: 01/10/2011

Online publication date: 08/07/2011

ISSN (print): 1359-6462

ISSN (electronic): 1872-8456

Publisher: Pergamon Press

URL: https://doi.org/10.1016/j.scriptamat.2011.06.050

DOI: 10.1016/j.scriptamat.2011.06.050

Altmetrics

Altmetrics provided by Altmetric

Share