EROSION-RESISTANT COATINGS FOR STEEL TUBES

A method of providing a protective, erosion-resistant coating of a WC-M X composite on a carbon or low-alloy steel pipe or tube where M is one of nickel, cobalt, chromium or iron or combination thereof and X is one of silicon, bor on or combination thereof, and heat treating the coating to metallurg...

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Bibliographische Detailangaben
Hauptverfasser:	SUBRAMANIAN, CHINNIA GOUNDER, EASTON, DAVID AARON, TZATZOV, KONSTANTIN K
Format:	Patent
Sprache:	eng ; fre
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:	A method of providing a protective, erosion-resistant coating of a WC-M X composite on a carbon or low-alloy steel pipe or tube where M is one of nickel, cobalt, chromium or iron or combination thereof and X is one of silicon, bor on or combination thereof, and heat treating the coating to metallurgically bond t he coating onto a steel substrate of the pipe or tube. The coating may be deposited in one or more layers by plasma transferred arc deposition or may be deposited as a slurry coating or thermal spray coating with sintering of the coating. The steel substrate is prepared for coating by at least one of boring, honing, bright finishing, gr it blasting, grinding, chemical pickling or electro-polishing of the substrate.