Hydrocarbon phosphonic acid surface treatment that eliminates hy

Details Hydrocarbon phosphonic acid surface treatment that eliminates hy Hydrocarbon phosphonic acid surface treatment that eliminates hy

1999-07-08

2000-09-19

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148259, 148275, 148703, C23C 2200

Patent

active

061206180

ABSTRACT:
A method of controlling bulk absorption of atomic hydrogen and facilitating degassing of hydrogen from aluminum alloy workpieces during heat treatments in furnaces with ambient and/or moisture-laden atmospheres by exposing the surface of the workpieces to a low molecular weight solution or dispersion of an alkyl phosphonic acid, an olefinic phosphonic acid or an aryl phosphonic acid before subjecting the workpieces to heat treatments. The workpieces exposed to the phosphonic acid solution or dispersion are subjected to heat treatment in furnaces having ambient or moisture-laden atmospheres. The solution or dispersion involves chemical species that are deposited onto the aluminum surface from the phosphonic acid solution or dispersion which substantially decrease the amount of atomic hydrogen entering the bulk of the workpieces from their surfaces during heat treatment and, in addition, facilitate removal of atomic and molecular hydrogen from the bulk of the workpieces during heat treatment.

REFERENCES:
patent: 2885313 (1959-05-01), Milliken
patent: 2885315 (1959-05-01), Milliken
patent: 2885316 (1959-05-01), Milliken
patent: 2995479 (1961-08-01), Cochran et al.
patent: 3224908 (1965-12-01), Duch et al.
patent: 3293088 (1966-12-01), Herbst et al.
patent: 4391655 (1983-07-01), Thurston et al.
patent: 4718482 (1988-01-01), Iwana et al.
patent: 5052421 (1991-10-01), McMillen
patent: 5277788 (1994-01-01), Nitowski et al.
patent: 5409156 (1995-04-01), Tsuji
patent: 5753056 (1998-05-01), Opalka et al.

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