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Title: Using carbon nanotubes to enhance creep performance of lead free solder
Authors: Nai, S.M.L.
Wei, J.
Gupta, M. 
Keywords: Carbon nanotubes
Creep test
Lead free solder
Issue Date: Apr-2008
Citation: Nai, S.M.L., Wei, J., Gupta, M. (2008-04). Using carbon nanotubes to enhance creep performance of lead free solder. Materials Science and Technology 24 (4) : 443-448. ScholarBank@NUS Repository.
Abstract: In the present study, the influence of multiwalled carbon nanotubes (CNTs) on the creep performance of 95·8Sn-3·5Ag-0·7Cu lead free solder is investigated. Composite solders containing varying weight percentages of CNTs were syntheslsed. Solder joints were fabricated and subjected to a series of tests under testing temperatures ranging from 25 to 125°C and applied stresses ranging from 4 to 18 MPa. Creep results revealed that solders containing CNTs exhibited significantly improved creep resistance and also creep time to failure increased. Stress exponents of composite solders were higher than that of monolithic solder. In general, stress exponent was found to increase with increasing applied stress and with decreasing testing temperature. The range of activation energies of composite solder with 0-01 wt-%CNT addition was found to be comparable to that of monolithic Sn-Ag-Cu. However, as the amount of CNT increased to 0·04 wt-%, the range of activation energies increased accordingly. © 2008 Institute of Materials, Minerals and Mining.
Source Title: Materials Science and Technology
ISSN: 02670836
DOI: 10.1179/174328408X282155
Appears in Collections:Staff Publications

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