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:
Nov. 03, 2015
Filed:
Aug. 26, 2009
Minoru Kasukawa, Yokosuka, JP;
Shigeyuki Nakagawa, Yokosuka, JP;
Kenji Miyamoto, Yokosuka, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
[Object] To provide a joining method for dissimilar metals which are magnesium alloy and steel and difficult to be metallurgically directly joined to each other while oxide film is present at a joining surface. [Solving Means] In order to join magnesium alloy materialand steel plateto each other, a galvanized steel plate to which Zn—Al—Mg alloy plating (a third material) is applied is used as the steel plate. When joining is made, ternary eutectic melting of Al—Mg—Zn is caused, so that it is discharged together with oxide filmand impurities from the joining interface while Al—Mg intermetallic compound such as AlMgand Fe—Al intermetallic compound such as FeAlare formed, thereby joining the newly generated surfaces of the magnesium alloy materialand the steel plateto each other through a compound layercontaining these intermetallic compounds.