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Liquidus projection of the ternary Ag–Sn–Ni system

Published online by Cambridge University Press:  03 March 2011

Sinn-wen Chen ,
Hsiu-feng Hsu  and
Chih-wei Lin
Sinn-wen Chen*
Affiliation:
Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 300, Republic of China
Hsiu-feng Hsu
Affiliation:
Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 300, Republic of China
Chih-wei Lin
Affiliation:
Department of Chemical Engineering, National Tsing Hua University, Hsin-Chu, Taiwan 300, Republic of China
*
a) Address all correspondence to this author. e-mail: swchen@che.nthu.edu.tw
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Abstract

The liquidus projection of the ternary Sn–Ag–Ni system at the Sn-rich side was determined experimentally. No ternary compound was found, and the ζ–Ag4Sn, Ag3Sn, and Sn existed as the primary solidification phases only in very small compositional portions of the ternary Sn–Ag–Ni system. In more than half of the compositional regime of the ternary system, the Ni3Sn2 phase was the primary solidification phase. The differential thermal analysis technique was used to determine the reaction temperatures and solidification sequences of various Sn-rich Sn–Ag–Ni alloys. Three invariant reactions were found: L = Sn + Ni3Sn4 + Ag3Sn, L + ζ–Ag4Sn = Ni3Sn4 + Ag3Sn and L + Ni3Sn2 = ζ–Ag4Sn + Ni3Sn4. Their reaction temperatures have been determined to be 219, 488, and 516.5 °C, respectively.

Keywords

AlloyPhase equilibria
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 8 , August 2004 , pp. 2262 - 2267
Copyright
Copyright © Materials Research Society 2004

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References

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