Surface alloyed high temperature alloys

Details Surface alloyed high temperature alloys Surface alloyed high temperature alloys

C - Chemistry, Metallurgy

23

C

C23C 10/00 (2006.01) C22C 38/40 (2006.01) C23C 10/52 (2006.01) C23C 12/02 (2006.01) C23C 26/00 (2006.01)

Patent

CA 2175439

There is provided a surface alloyed component which comprises a base alloy with a diffusion barrier layer enriched in silicon and chromium being provided adjacent thereto. An enrichment pool layer is created adjacent said diffusion barrier and contains silicon and chromium and optionally titanium or aluminum. A reactive gas treatment may be used to generate a replenishable protective scale on the outermost surface of said component.

Constituant de surface renfermant un alliage de métaux de base, avec une couche barrière adjacente de diffusion, enrichie en silicium et en chrome. La couche enrichie est créée à côté de la barrière de diffusion; elle renferme du silicium et du chrome et, facultativement, du titane ou de l'aluminium. Un traitement au gaz réactif peut servir à former une écaille protectrice, pouvant être reconstituée, à la surface la plus à l'extérieur du constituant.

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