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:
Mar. 11, 2014
Filed:
Jul. 17, 2008
Takeshi Ohwaki, Kobe, JP;
Wataru Urushihara, Kobe, JP;
Junichiro Kinugasa, Kobe, JP;
Koji Noishiki, Takasago, JP;
Takeshi Ohwaki, Kobe, JP;
Wataru Urushihara, Kobe, JP;
Junichiro Kinugasa, Kobe, JP;
Koji Noishiki, Takasago, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
An aluminum alloy material having an excellent sea water corrosion resistance comprises an aluminum alloy substrate whose ten-points average surface roughness Rz, which is the average of five greatest peak-to-valley separations on the surface, is controlled at 0.3 μm or over, an organic phosphonic primer film formed on a surface of the aluminum alloy substrate, and a fluorine resin paint film formed on the primer film and having a dry average thickness of 1 to 100 μm. A plate heat exchanger having an excellent sea water corrosion resistance is also provided wherein the aluminum alloy material is used as a heat transfer unit using sea water as cooling water.