Material und Verfahren fuer verbesserte Oberflaechenbehandlung von Metallen

Material und Verfahren fuer verbesserte Oberflaechenbehandlung von Metallen

1,218,295. Alloys; coating by pack diffusion. GENERAL ELECTRIC CO. Sept.10, 1968 [Dec.14, 1967], No.42943/68. Headings C7A and C7F. A ternary alloy useful for coating surfaces by pack diffusion consists, by weight, of: - A1 20-48% combined C 0‹5 - 9% uncombined C up to 3% Ti (min. 50%) and impuritie...

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Bibliographische Detailangaben
Hauptverfasser: JEROME LEVINE,DAVID, AARON LEVINSTEIN,MOSES
Format: Patent
Sprache:ger
Schlagworte:
ALLOYS
CHEMICAL SURFACE TREATMENT
CHEMISTRY
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING MATERIAL WITH METALLIC MATERIAL
COATING METALLIC MATERIAL
DIFFUSION TREATMENT OF METALLIC MATERIAL
FERROUS OR NON-FERROUS ALLOYS
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
METALLURGY
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:1,218,295. Alloys; coating by pack diffusion. GENERAL ELECTRIC CO. Sept.10, 1968 [Dec.14, 1967], No.42943/68. Headings C7A and C7F. A ternary alloy useful for coating surfaces by pack diffusion consists, by weight, of: - A1 20-48% combined C 0‹5 - 9% uncombined C up to 3% Ti (min. 50%) and impurities - balance Impurities may be Ni, Mn, Cr and Fe in a total amount up to 2%. Articles such as jet engine parts of Fe, Ni or Co - base alloys (specific examples are given of Ni and Co alloys) are coated by heating them at 1200‹-2100‹ F. for 1-4 hours in contact with a particulate mixture consisting of (a) 20-90% by weight of the ternary alloy, (b) 10-80% by weight of an inert filler such as Al 2 O 3 , and (c) 0À1-10% by weight of a halide such as NH 4 or alkali metal halide or chromium fluoride. Al, Ti or both are deposited depending on the deposition factor (Al% + 2C% - Ti%/2) of the alloy.