MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Faceting Behavior of Primary Ag in Bi-Ag Alloys for High Temperature Soldering Applications
Jenn-Ming SongHsin-Yi Chuang
Author information
JOURNALS FREE ACCESS

2009 Volume 50 Issue 7 Pages 1902-1904

Details
Abstract

The solidification behavior and structure of Bi-Ag alloys with low Ag content (0 mass%∼11 mass%) which are now being applied as high temperature Pb-free solders were investigated. The results show that Bi-Ag alloys exhibited a nonequilibrium eutectic solidification feature and a considerably large undercooling. A longer cooling period to reach eutectic temperature enhanced the faceting of primary Ag crystals. The large value of the entropy of solution for Ag near the eutectic point should account for this.

Information related to the author
© 2009 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top