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Title: Pb-free Sn—Ag—Cu—Al or Sn—Cu—Al solder

Abstract

A solder alloy includes Sn, optional Ag, Cu, and Al wherein the alloy composition is controlled to provide a strong, impact-and thermal aging-resistant solder joint that has beneficial microstructural features and is substantially devoid of Ag3Sn blades.

Inventors:
; ;
Issue Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1600142
Patent Number(s):
10442037
Application Number:
14/544,833
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
AC02-07CH11358
Resource Type:
Patent
Resource Relation:
Patent File Date: 02/24/2015
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Anderson, Iver E., Harringa, Joel L., and Boesenberg, Adam J. Pb-free Sn—Ag—Cu—Al or Sn—Cu—Al solder. United States: N. p., 2019. Web.
Anderson, Iver E., Harringa, Joel L., & Boesenberg, Adam J. Pb-free Sn—Ag—Cu—Al or Sn—Cu—Al solder. United States.
Anderson, Iver E., Harringa, Joel L., and Boesenberg, Adam J. Tue . "Pb-free Sn—Ag—Cu—Al or Sn—Cu—Al solder". United States. https://www.osti.gov/servlets/purl/1600142.
@article{osti_1600142,
title = {Pb-free Sn—Ag—Cu—Al or Sn—Cu—Al solder},
author = {Anderson, Iver E. and Harringa, Joel L. and Boesenberg, Adam J.},
abstractNote = {A solder alloy includes Sn, optional Ag, Cu, and Al wherein the alloy composition is controlled to provide a strong, impact-and thermal aging-resistant solder joint that has beneficial microstructural features and is substantially devoid of Ag3Sn blades.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 15 00:00:00 EDT 2019},
month = {Tue Oct 15 00:00:00 EDT 2019}
}

Works referenced in this record:

Crystallization, morphology and distribution of Ag3Sn in Sn–Ag–Cu alloys and their influence on the vibration fracture properties
journal, September 2007


Lead-free solder
patent, October 2007


Development of Sn–Ag–Cu and Sn–Ag–Cu–X alloys for Pb-free electronic solder applications
journal, September 2006


The effects of suppressed beta tin nucleation on the microstructural evolution of lead-free solder joints
journal, September 2006


Effects of intermetallic compounds on properties of Sn–Ag–Cu lead-free soldered joints
journal, March 2003


Nucleation Control and Thermal Aging Resistance of Near-Eutectic Sn-Ag-Cu-X Solder Joints by Alloy Design
journal, September 2009


Lead-free solder
patent, May 2001


The Superior Drop Test Performance of SAC-Ti Solders and Its Mechanism
conference, December 2008


Failure Mechanisms and Crack Propagation Paths in Thermally Aged Pb-Free Solder Interconnects
journal, June 2007


Lead-free tin-silver-copper alloy solder composition
patent, October 2004


The Effect of Small Additives on the Undercooling of Pure Tin [溶融錫の過冷におよぼす微量添加元素の影響]
journal, January 1973


Experimental and thermodynamic assessment of Sn-Ag-Cu solder alloys
journal, October 2000


Process for forming a protective film on Cu-Sn alloys
patent, April 1984


Pb-free Sn-Ag-Cu ternary eutectic solder
patent, June 1996


Britannia Metal of Pewter Alloy
patent, August 1932


Application of an asymmetrical four point bend shear test to solder joints
journal, September 2001


Microstructure and mechanical properties of lead-free solders and solder joints used in microelectronic applications
journal, July 2005


Ag3Sn plate formation in the solidification of near-ternary eutectic Sn-Ag-Cu
journal, June 2003


Alloying modification of Sn–Ag–Cu solders by manganese and titanium
journal, March 2009


Study of the undercooling of Pb-free, flip-chip solder bumps and in situ observation of solidification process
journal, March 2007


Physics and materials challenges for lead-free solders
journal, February 2003


Comparison of isothermal mechanical fatigue properties of lead-free solder joints and bulk solders
journal, March 2005


Alloying effects in near-eutectic Sn-Ag-Cu solder alloys for improved microstructural stability
journal, September 2001


Suppression of void coalescence in thermal aging of tin-silver-copper-X solder joints
journal, January 2006


Observations of nucleation catalysis effects during solidification of SnAgCuX solder joints
journal, July 2007