Title:
【発明の名称】耐食性に優れるアルミニウム製品及びその製造方法
Document Type and Number:
Japanese Patent JP3037700
Kind Code:
B2
Abstract:
A corrosion resistant aluminum article is described. It includes a main body portion formed of an aluminum alloy containing no more than 0.4% iron, no more than 0.15% silicon, from about 0.1% to about 0.6% copper and from about 0.7% to about 1.5% manganese. The corrosion resistance is provided by a silicon-rich band of dense precipitate formed in the alloy adjacent at least one face thereof. This band has a thickness of about 20-50 mu m and there is substantially less manganese in solid solution in the band than in the alloy outside the band. To form the band, a silicon-containing layer is applied to a surface of the alloy body to be protected and the composite thus formed is heat treated at a temperature of at least 550 DEG C.
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Inventors:
Paul Emil Fortin
Pierre Henri Malois
Dewi Gordon Sackcliffe Evans
Pierre Henri Malois
Dewi Gordon Sackcliffe Evans
Application Number:
JP2649489A
Publication Date:
April 24, 2000
Filing Date:
February 02, 1989
Export Citation:
Assignee:
ALCAN INTERNATIONAL LIMITED
International Classes:
B23K35/28; B32B15/01; C22C21/00; C23C10/28; C22F1/04; C23C26/00; (IPC1-7): C22C21/00; C22F1/04; C23C10/28
Domestic Patent References:
| JP5317548A | ||||
| JP6182992A | ||||
| JP62230494A |
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)