The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2013
Filed:
Mar. 06, 2009
Applicants:
Nikhilesh Chawla, Tempe, AZ (US);
Martha Dudek, Chandler, AZ (US);
Inventors:
Nikhilesh Chawla, Tempe, AZ (US);
Martha Dudek, Chandler, AZ (US);
Assignee:
Arizona Board of Regents, for and on behalf of Arizona State University, Scottsdale, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/04 (2006.01); B32B 15/20 (2006.01); C22C 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lead free solder consisting of a ternary eutectic composition of Sn-3.9Ag-0.7Cu with Ce in the amount of 0.5 to 2% by weight exhibits improved oxidation resistance increased ductility in comparison with other RE metals and is characterized by a homogeneous mixture of large grain CeSnintermetallics in a Sn beta phase. In solder applications, the joints with the solder are resistance to interfacial fracture by distributing the strain within the solder interface increasing impact resistance.