Process for producing wear-resistant boride layers on...

Details Process for producing wear-resistant boride layers on... Process for producing wear-resistant boride layers on...

C - Chemistry, Metallurgy

23

C

C23C 16/28 (2006.01) C23C 16/46 (2006.01)

Patent

CA 2244248

A process is provided for producing wear-resistant boride layers on metal material surfaces. The process is characterized in that a boron halide selected from the group comprising boron trifluoride, boron tribromide, boron triiodide and their mixtures is mixed with hydrogen and optionally argon and/or nitrogen, in order to produce a reaction gas containing between 0.1 and 30 vol% boron halide. The resultant mixture is activated by a plasma discharge whereby boron is transferred from the plasma to the metal surface.

L'invention concerne un procédé pour produire des couches de borure résistantes à l'usure sur des surfaces de matériaux métalliques. Ce procédé est caractérisé en ce que de l'halogénure de bore choisi dans le groupe comprenant le trifluorure de bore, le tribromure de bore, le triiodure de bore et leurs mélanges est mélangé avec de l'hydrogène et éventuellement de l'argon et/ou de l'azote en vue de produire un gaz de réaction contenant entre 0,1 et 30 % en volume d'halogénure de bore. Le mélange obtenu est activé par une décharge de plasma de telle manière que le bore peut être transféré du plasma à la surface métallique.

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