Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 333, Issue 1-2, Pages 24-34Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5093(01)01820-2
Keywords
60Sn40Pb; 100Sn; adhesive strength; intermetallic compound (IMC)
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This study investigates the influence of intermetallic compound (IMC) growth on the adhesive strength of solder joints. 100Sn and 60Sn40Pb solders were used to solder electrolytic copper wires end to end. Soldered samples were then subjected to high temperature storage testing. The resulting interfacial IMCs in both solders were composed of Cu6Sn5 and Cu3Sn. IMC in the 100Sn solder joint grew faster than in the 60Sn40Pb. The growth behavior of Cu6Sn5 and Cu3Sn were subject to lead concentration. Results of tensile testing revealed an adhesive strength for 60Sn40Pb of 77.3 MPa. higher than the 50.0 MPa for 100Sn. 60Sn40Pb was found more sensitive to high temperature storage than 100Sn. (C) 2002 Elsevier Science B.V. All rights reserved.
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