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:
Aug. 12, 2003
Filed:
May. 22, 2000
Masami Ueda, Higashi-Osaka, JP;
Masaaki Ishio, Osaka, JP;
Hidetoshi Noda, Toyonaka, JP;
Tsuyoshi Hasegawa, Ibaraki, JP;
Sumitomo Special Metals Co., Ltd., Osaka, JP;
Abstract
A brazing alloy according to the present invention has a melting point equivalent to that of a copper brazing filler and is excellent in corrosion- and oxidation-resistance. The brazing alloy consists essentially of Mn, Ni and Cu, and has a composition in terms of weight percentage which, when plotted on a diagram as shown in FIG. , falls within a range defined by: the point A (37% Mn, 63% Ni, 0% Cu), the point B (18% Mn, 27% Ni, 55% Cu); the point C (42% Mn, 3% Ni, 55% Cu); the point D (50% Mn, 3% Ni, 47% Cu); and the point E (50% Mn, 50% Ni, 0% Cu), wherein Mn=50% is exclusive. A brazing material according to the present invention comprises: a Mn-based metal layer which is composed of a Mn—Ni alloy or a Mn—Ni—Cu alloy; and a Ni—based metal layer which is composed of Ni, a Ni alloy, or a Ni—Cu alloy, wherein the Mn-based metal layer and the Ni-based metal layer are bonded to each other in a stacked relation, and an average content of each of the essential elements in any cross section perpendicular to the length of the brazing material falls within the composition range of the aforesaid brazing alloy.