ALUMINUM ALLOY MATERIAL WITH LOW ELUTION ACTIVITY FOR COOLING SYSTEM

Title:

ALUMINUM ALLOY MATERIAL WITH LOW ELUTION ACTIVITY FOR COOLING SYSTEM

Document Type and Number:

Japanese Patent JP2007291482

Kind Code:

A

Abstract:

To provide a lightweight aluminum alloy material with low elution activity for a cooling system which is excellent in thermal conductivity, workability and castability, and in which the elution of alloy compositional elements into a cooling liquid such as pure water is suppressed as much as possible, and, when used, e.g., as a cooling system constituting member for a fuel cell, particular necessity for adding rust preventability to a cooling liquid itself or the application of coating treatment for the purpose of rust prevention to the internal face of the cooling system constituting member is eliminated.

The aluminum alloy material with low elution activity for a cooling system contains manganese (Mn) as a compound of Al4Mn and/or Al6Mn in the range of 0.5 to 2.0 mass% or silicon (Si) as a silicon element in the range of 0.5 to 20 mass%, and further, contains the other alloy compositional element(s) in the range where the total of the elution coefficient(s) thereof does not exceed 1.1.

Inventors:

TAGUCHI YOSHIHIRO
EBIHARA TAKESHI

Application Number:

JP2006123467A

Publication Date:

November 08, 2007

Filing Date:

April 27, 2006

Export Citation:

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Assignee:

NIPPON LIGHT METAL CO

International Classes:

C22C21/00; C22F1/04; C22F1/043; C22F1/00

Domestic Patent References:

JP2004225160A	2004-08-12
JPS5935311A	1984-02-27
JP2003027167A	2003-01-29
JP2004002985A	2004-01-08
JP2006183126A	2006-07-13
JP2007016308A	2007-01-25

Attorney, Agent or Firm:

Kazuya Sasaki
Katsuo Naruse
Tomohiro Nakamura
Masashi Torino

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