Process for preparing sic protective films on metallic or metal impregnated substrates

Silicon carbide protective films are produced on the surface of metallic or metal-impregnated substrates. A silicide or silicon diffusion coating is initially formed on the surface of the substrate, and subsequently said surface is treated with a gas stream which is reducing to the coating and subst...

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Bibliographische Detailangaben
Hauptverfasser:	PIERANTOZZI, RONALD, CABRERA, ALEJANDRO L, KIRNER, JOHN F
Format:	Patent
Sprache:	eng
Schlagworte:	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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	Silicon carbide protective films are produced on the surface of metallic or metal-impregnated substrates. A silicide or silicon diffusion coating is initially formed on the surface of the substrate, and subsequently said surface is treated with a gas stream which is reducing to the coating and substrate and contains a gaseous carbon source at a temperature greater than 500 DEG C.