Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1991-08-30
1994-08-09
Dean, Richard O.
Metal treatment
Stock
Age or precipitation hardened or strengthened
148549, 148698, 148702, 205106, 205109, 205207, 420547, 420550, 428632, 428640, C22C 2100
Patent
active
053363418
ABSTRACT:
An infrared radiation element and a process for producing the same. An aluminum alloy material consists essentially of 0.3 to 4.3 weight % of Mn, balance Al, and impurities. The alluminum alloy material is heated for dispersing a precipitate of an Al--Mn intermetallic compound at a density of at a minimum 1.times.10.sup.5 /mm.sup.3 for a size of 0.1 .mu.m to 3 .mu.m. The heated aluminum alloy material is anodized to form an anodic oxide layer thereon.
REFERENCES:
patent: 4483750 (1984-11-01), Powers et al.
patent: 4915798 (1990-04-01), Maitland
Gunji Hiroyoshi
Kurosaka Akihito
Maejima Masatsugu
Matsuo Mamoru
Muramatsu Toshiki
Dean Richard O.
Fujikura Ltd.
Koehler Robert R.
Sky Aluminium Co., Ltd.
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