Diffusing titanium and nitride into coated materials

Details Diffusing titanium and nitride into coated materials Diffusing titanium and nitride into coated materials

C - Chemistry, Metallurgy

23

C

C23C 12/02 (2006.01) C25C 1/06 (2006.01)

Patent

CA 2649232

A method for diffusing titanium and nitride into a base material having a coating thereon using conventional surface treatments or coatings. The method generally includes the steps of providing a base material having a coating thereon; providing a salt bath which includes sodium dioxide and a salt selected from the group consisting of sodium cyanate and potassium cyanate; dispersing metallic titanium formed by electrolysis of a titanium compound in the bath; heating the salt bath to a temperature ranging from about 43O°C to about 67O°C; and soaking the base material in the salt bath for a time of from about 10 minutes to about 24 hours. In accordance with another aspect of the present invention, titanium and nitride may be diffused into a base material without a coating. The treated base material may further be treated with conventional surface treatments or coatings.

L'invention porte sur un procédé de diffusion de titane et de nitrure dans un matériau de base revêtu, à l'aide de traitements de surface ou de revêtements usuels. Le procédé comporte d'une manière générale les étapes suivantes: obtention d'un matériau de base revêtu; obtention d'un bain de sels comprenant du peroxyde de sodium et un sel sélectionné parmi le cyanate de sodium et le cyanate de potassium; dispersion dans le bain de titane métallique obtenu par électrolyse de composés de titane; chauffage du bain de sels entre environ 43O°C et environ 67O°C; trempage du matériau de base dans le bain de sels pendant environ 10 minutes à environ 24 heures. Dans une autre exécution, le titane et le nitrure peuvent être diffusés dans un matériau de base non revêtu. Le matériau de base une fois traité peut recevoir un traitement supplémentaire par des procédés traditionnels de traitement de surface ou de revêtement.

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