TY - JOUR
T1 - Young's modulus of (Cu, Ag)-Sn intermetallics measured by nanoindentation
AU - Deng, X.
AU - Koopman, M.
AU - Chawla, Nikhilesh
AU - Chawla, K. K.
N1 - Funding Information:
The authors thank Dr. Richard Fields, National Institute of Standards and Technology, for providing the Ag 3 Sn used in this study, and to Indium Corporation for supplying the solder foil. N.C. and X.D. acknowledge financial support for this research from the National Science Foundation under contract #DMR-0092530 (Dr. K.L. Murty, Program Manager).
PY - 2004/1/15
Y1 - 2004/1/15
N2 - Reflow of Sn-rich solders on a Cu substrate results in the formation of several Cu-Sn and Ag-Sn intermetallics, which control the properties of the solder joint. Bulk measurement of physical properties, such as Young's modulus, is problematic and may be affected by porosity and undesired phases. In this paper, we report on the accurate and reliable Young's modulus values of Cu6Sn5, Cu3Sn, and Ag3Sn intermetallics, measured in situ in a solder joint by nanoindentation. The measured values for Cu6Sn5, Cu3Sn, and Ag3Sn, were 112.3 ± 5.0, 134.2 ± 6.7, and 78.9 ± 3.7 GPa, respectively. Comparison of these values with limited data in the literature was also conducted and is discussed.
AB - Reflow of Sn-rich solders on a Cu substrate results in the formation of several Cu-Sn and Ag-Sn intermetallics, which control the properties of the solder joint. Bulk measurement of physical properties, such as Young's modulus, is problematic and may be affected by porosity and undesired phases. In this paper, we report on the accurate and reliable Young's modulus values of Cu6Sn5, Cu3Sn, and Ag3Sn intermetallics, measured in situ in a solder joint by nanoindentation. The measured values for Cu6Sn5, Cu3Sn, and Ag3Sn, were 112.3 ± 5.0, 134.2 ± 6.7, and 78.9 ± 3.7 GPa, respectively. Comparison of these values with limited data in the literature was also conducted and is discussed.
KW - Intermetallic
KW - Nanoindentation
KW - Solder
KW - Young's modulus
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U2 - 10.1016/j.msea.2003.08.032
DO - 10.1016/j.msea.2003.08.032
M3 - Article
AN - SCOPUS:0742287928
SN - 0921-5093
VL - 364
SP - 240
EP - 243
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
IS - 1-2
ER -