In-situ soldering process technique by synchrotron X-ray imaging

Mohd Salleh, M. A. A., Sugiyama, A., Yasuda, H., McDonald, S. D. and Nogita, Naz (2015) In-situ soldering process technique by synchrotron X-ray imaging. Applied Mechanics and Materials, 754-755 508-512. doi:10.4028/

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Author Mohd Salleh, M. A. A.
Sugiyama, A.
Yasuda, H.
McDonald, S. D.
Nogita, Naz
Title In-situ soldering process technique by synchrotron X-ray imaging
Formatted title
In-situ soldering process technique by synchrotron X-ray imaging
Journal name Applied Mechanics and Materials   Check publisher's open access policy
ISSN 1660-9336
Publication date 2015-04
Year available 2015
Sub-type Article (original research)
DOI 10.4028/
Open Access Status Not yet assessed
Volume 754-755
Start page 508
End page 512
Total pages 5
Place of publication Pfaffikon, Switzerland
Publisher Scientific.Net
Collection year 2016
Language eng
Formatted abstract
This paper demonstrates the development of an experimental technique of in-situ observation for soldering of Sn-0.7wt%Cu lead-free solder on a Cu substrate which was achieved for the first time by synchrotron X-ray imaging. Reactions between liquid solder and Cu substrate during a soldering process were able to be recorded in real-time. Individual stages of the soldering process consisted of flux activation in removal of Cu oxide, solder melting and contact with the Cu substrate (wetting) and intermetallic compound (IMC) and void formation between the solder and Cu substrate. The technique development which includes experimental setup with calculated optimum beam energy in the range of 20 – 30 keV appears to result in a clear observation of real-time X-ray imaging of the soldering process. This technique provides a key method to understand the mechanism of formation of micro-electronic inter-connects for future electronic packaging applications.
Keyword Imaging
Lead-Free Soldering
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Created: Fri, 18 Mar 2016, 09:52:52 EST by Maata Moka on behalf of School of Mechanical and Mining Engineering