Skip to main content Accessibility help
×
Home

Study of structural changes and properties of some Sn-Ag lead-free solder alloys

  • M. Kamal (a1) and El Said Gouda (a2)

Abstract

Structure, wetting, mechanical and electrical transport properties of tin- (2.5, 3.5, 5 and 10) wt.% silver alloys have been investigated. The results showed that, addition of silver to pure tin causes more precipitations of the intermetallic compound Ag3Sn. A new intermetallic compound Ag4Sn has been formed with adding Ag more than 3.5 wt.%. This compound causes continuous increase in the Young's modulus and electrical resistivity. While for the wetting measurements, additions of silver to pure tin up to 5 wt.% reduces the contact angle. Above that, the contact angle increases due to more precipitations of Ag–Sn compounds, which may tend to reduce the adhesive forces between molten alloys and the substrate.

Copyright

Corresponding author

References

Hide All
[1] McCormack, M., Jin, S., Kammmlott, G.W., Chen, H.S., Appl. Phys. Lett. 63, 15 (1993)
[2] Yang, W., Messler Jr, R.W., J. Electr. Mat. 23, 765 (1994)
[3] McCormack, M., Jin, S., J. Electr. Mat. 23, 635 (1994)
[4] Yang, W., Felton, L., Messler Jr, R.W., J. Electr. Mat. 24, 1465 (1995)
[5] Suganuma, K., Niihara, K., Morito, T., Nakamura, Y., J. Jpn Inst. Interconnect. Pack. Electron. Circ. 12, 406 (1997)
[6] Kim, K.S., Huh, S.H., Suganuma, K., Mat. Sci. Engineer. A 333, 106 (2002)
[7] M. Kamal, El Said Gouda, Materials Science: Materials in electronics (2008), in press
[8] Kamal, M., Said Gouda, El, Mater. Manuf. Process. 21, 736 (2006)
[9] E. Schreiber, O.L. Anderson, N. Soga, Elastic constant and their measurements (McGraw-Hill, New York, 1973), pp. 82–125
[10] S. Timoshenko, J.N. Goddier, Theory of Elasticity, 2nd edn. (McGraw-Hill, New York, 1951), p. 277
[11] Nuttall, K., J. Inst. Met. 99, 266 (1971)
[12] Deng, X., Koopman, M., Chawla, N., Chawla, K.K., J. Mat. Sci. Engineer. A 364, 240 (2004)

Keywords

Study of structural changes and properties of some Sn-Ag lead-free solder alloys

  • M. Kamal (a1) and El Said Gouda (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed