Aluminum alloy composite materials for brazed heat exchangers

Details Aluminum alloy composite materials for brazed heat exchangers Aluminum alloy composite materials for brazed heat exchangers

1984-02-08

1985-12-24

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428636, 165180, 22826317, B32B 1520

Patent

active

045606250

ABSTRACT:
Aluminum alloy composite materials for brazed heat exchangers are described, which comprise an Al core alloy essentially consisting of predetermined amounts of Si, Mg, Cu and at least one element selected from Mn, Cr and Zr, the balance being Al and inevitable impurities, and an Al alloy clad layer formed on one side of the core alloy which is in contact with an aqueous heat transfer medium. The clad layer has a thickness 3-20% based on the thickness of the composite material and a less-noble corrosion potential of 20-100 mV than the core alloy. A filler alloy may be formed on the other side of the core alloy.

REFERENCES:
patent: 3674448 (1972-07-01), Brown et al.
patent: 3891400 (1975-06-01), Robinson
patent: 4146164 (1979-03-01), Anderson et al.
patent: 4161553 (1979-07-01), Vernam et al.
patent: 4211827 (1980-07-01), Pryor et al.

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