Process for the surface oxidisation of aluminum

Details Process for the surface oxidisation of aluminum Process for the surface oxidisation of aluminum

1974-11-18

1976-05-18

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

118 491, 118 495, 291962, 204164, 204298, 427250, C23C 1500, B23P 320, C23C 1310

Patent

active

039576086

ABSTRACT:
In the surface oxidisation of an aluminium coating deposited on a steel st there is provided a process in which the aluminium coated sheet is passed through an enclosure in which there is a vacuum of from 10.sup.-.sup.1 to 10.sup.-.sup.3 Torr and in which remains residual gas which is acted upon by an electrical field so as to form positive ions aimed at an aluminium target from which are removed aluminium atoms which combine with oxygen present in the enclosure so as to form alumina which is deposited in a layer on the surface of the aluminium coating.

REFERENCES:
patent: 2405662 (1946-08-01), McManus et al.
patent: 3326177 (1967-06-01), Taylor
patent: 3355371 (1967-11-01), Hile et al.
patent: 3394066 (1968-07-01), Miles
patent: 3556966 (1971-01-01), Waxman et al.
patent: 3668095 (1972-06-01), Katto et al.
patent: 3735482 (1973-05-01), Norris et al.
patent: 3890456 (1975-06-01), Dils

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