Precious metal vaporization reduction
AssigneeOwens-Corning Fiberglas Corporation
InventorGary B. A. Schuster
Life of this patent
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Abstract
Metal vaporization from precious metals is reduced by applying to the surface of the metal a flame sprayed coating comprising a refractory material and a glass.
Claims8
A bushing adapted to hold a mass of molten glass from which glass fibers are withdrawn, comprising a precious metal selected from the group consisting of platinum, iridium, rhodium and a combination thereof, having on its surface a flame sprayed coating comprising:
- (a) a refractory material selected from the group consisting of MgO, ZrO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, Cr.sub.2 O.sub.3, aluminides, silicides, borides and a combination thereof;
- and
- (b) a calcia-aluminosilicate glass, said glass being present in an amount effective to decrease the vaporization of said precious metal.
A method of reducing precious metal vaporization from precious metals which comprises applying to the surface of a precious metal selected from the group consisting of platinum, iridium, rhodium and combinations thereof, a coating comprising:
- (a) a refractory material selected from the group consisting of MgO, ZrO.sub.2, Al.sub.2 O.sub.3, TiO.sub.2, Cr.sub.2 O.sub.3, aluminides, silicides, borides, and combinations thereof;
- and
- (b) a calcia-aluminosilicate glass, wherein said glass is present in an amount effective to decrease the vaporization of said precious metal.
Dependencies are inferred from the claim text.