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Title: Mechanical response of indium micro-joints to low temperature cycling
Authors: Cheng, X.
Liu, Changqing
Silberschmidt, Vadim V.
Keywords: Indium
Reliability
Liquid nitrogen temperature
Issue Date: 2009
Publisher: © IEEE
Citation: CHENG, X., LIU, C. and SILBERSCHMIDT, V.V., 2009. Mechanical response of indium micro-joints to low temperature cycling. IN: Electronic Components and Technology Conference (ECTC 2009), San Diego, CA, 26-29 May, pp. 1792 - 1795.
Abstract: In this study, mechanical properties of indium micro-joints exposed to low temperature cycling were investigated. The metallization structure of Ni/Cu was specially used as a substrate to form indium joints for mechanical tests. This paper focuses mainly on the tensile test of indium joints at thermal cycling from 300 K to 77 K. The Young's modulus, the ultimate strength and yield strength of the material were obtained. The failure mode after different loading histories was analyzed. The results indicate the decline of the Young's modulus with the increase in the number of thermal cycles; however, the ultimate/yield strength of indium joints did not show an obvious trend with the number of thermal cycling. It was confirmed that indium joints still maintain a high ductility even after 20 thermal cycles. Finally, the associated modeling provides an insight predicting that an interface between indium and copper could be the potential site for failure in thermal cycling.
Description: This is a conference paper [© IEEE]. It is also available at: http://ieeexplore.ieee.org/ Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Version: Published
DOI: 10.1109/ECTC.2009.5074260
URI: https://dspace.lboro.ac.uk/2134/5332
ISBN: 9781424444755
ISSN: 0569-5503
Appears in Collections:Conference Papers (Mechanical and Manufacturing Engineering)

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