Corrosion resistant steel components and method of manufacture thereof

Corrosion resistant steel components are produced by a gaseous carburisation or carbonitriding process to provide a surface rich in carbon which is then heat-treated in a gaseous atmosphere to produce an epsilon iron carbonitride layer thereon. The component may be oxidised and quenched subsequent t...

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Bibliographische Detailangaben
Hauptverfasser:	CYRIL DAWES, JOHN DAVID SMITH, COLIN GEORGE SMITH
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:	Corrosion resistant steel components are produced by a gaseous carburisation or carbonitriding process to provide a surface rich in carbon which is then heat-treated in a gaseous atmosphere to produce an epsilon iron carbonitride layer thereon. The component may be oxidised and quenched subsequent to the second heat-treatment step, which may be carried out up to 800 DEG C i.e. above the pearlite-austenite transformation temperature of the steel.