$Method for increasing fracture toughness in aluminum-based diffusion coatings$

Method for increasing fracture toughness in aluminum-based diffusion coatings

A method for improving the fracture toughness for aluminum-based diffusion coatings by thermal spray means to simultaneously apply aluminum, chromium, boron, and/or silicon onto a steel workpiece, followed by heat treatment of the workpiece for a sufficient time to cause the aluminum, chromium, boro...

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Bibliographische Detailangaben
1. Verfasser:	KUNG STEVEN C
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:	A method for improving the fracture toughness for aluminum-based diffusion coatings by thermal spray means to simultaneously apply aluminum, chromium, boron, and/or silicon onto a steel workpiece, followed by heat treatment of the workpiece for a sufficient time to cause the aluminum, chromium, boron, and/or silicon to diffuse into the workpiece. The resulting diffusion coating demonstrates improved fracture toughness and does not necessitate the use of a slurry.