Water-resistant porcelain enamel coatings and method of...

Details Water-resistant porcelain enamel coatings and method of... Water-resistant porcelain enamel coatings and method of...

C - Chemistry, Metallurgy

03

C

C03C 8/20 (2006.01) C23C 18/02 (2006.01) C23D 5/00 (2006.01)

Patent

CA 2492744

A water-resistant porcelain enamel coating and method of making the same is provided. The porcelain enamel coating is prepared using a borosilicate glass frit, and mill additions of silica and a zirconia compound. The mixture is applied to a metal substrate and fired, resulting in a water-resistant coating that resists cracking and crazing. The coating is particularly useful in water heaters. In one embodiment, the coating comprises a fine zirconia compound having a median particle size of less than 10 microns.

Revêtement en émail de porcelaine résistant à l'eau et son procédé de fabrication. On prépare ce revêtement au moyen d'une frite de verre de borosilicate et d'apports broyés de silice et d'un composé de zircone. On applique ce mélange à un substrat en métal et on le cuit, ce qui permet d'obtenir un revêtement résistant à l'eau, ainsi qu'au fendillement et à la fissuration. Ce revêtement est particulièrement utile pour des chauffe-eau. Dans un mode de réalisation, ce revêtement est constitué par un composé de zircone fin dont la dimension moyenne de particules est inférieure à 10 microns.

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