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:
Dec. 08, 2015
Filed:
Sep. 13, 2010
Naokuni Muramatsu, Nagoya, JP;
Hisamichi Kimura, Sendai, JP;
Akihisa Inoue, Sendai, JP;
NGK Insulators, Ltd., Nagoya, JP;
Tohoku University, Sendai-Shi, JP;
Abstract
The zirconium content of the alloy composition of a copper alloy foil of the present invention is 3.0 to 7.0 atomic percent, and the copper alloy foil includes copper matrix phases and composite phases composed of copper-zirconium compound phases and copper phases. As shown in FIG., the copper matrix phases and the composite phases form a matrix phase-composite phase layered structure and are arranged alternately parallel to a rolling direction as viewed in a cross-section perpendicular to the width direction. In addition, the copper-zirconium compound phases and the copper phases in the composite phases form a composite phase inner layered structure and are arranged alternately parallel to the rolling direction at a phase pitch of 50 nm or less as viewed in the above cross-section. This double layered structure presumably makes the copper alloy foil densely layered to provide a strengthening mechanism similar to multilayer reinforced composite materials.