C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 41/89 (2006.01) C04B 35/83 (2006.01) C04B 41/50 (2006.01) C04B 41/52 (2006.01) F16D 65/12 (2006.01) F16D 69/02 (2006.01)
Patent
CA 2616155
The method comprises the following steps: impregnation of the piece with a liquid impregnation composition containing at least one phosphate compound over at least a part of the external surface of the piece, application to said external part of the surface of the piece of a coating composition containing a colloidal solution of at least one refractory oxide in water, at least one borosilicate compound in the form of a powder with coating properties and at least one metallic boride in a powder form, followed by thermal treatment after application of the coating composition.
Le procédé comprend les étapes de : - imprégnation de la pièce par une composition d'imprégnation liquide contenant au moins un composé de type phosphate, au niveau d'au moins une partie de la surface extérieure de la pièce, - application, sur ladite partie de la surface extérieure de la pièce, d'une composition de revêtement comprenant une solution colloïdale d'au moins un oxyde réfractaire dans de l'eau, au moins un composé essentiellement de type borosilicate sous forme de poudres ayant des propriétés cicatrisantes, et au moins un borure métallique sous forme de poudre, et - traitement thermique après application de la composition de revêtement.
Fontarnou Veronique
Nicolaus Nathalie
Roussarie Nadia
Messier-Bugatti
Sim & Mcburney
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