Molds with coatings for high temperature use in shaping glass-based material
AssigneeCorning Incorporated
InventorsJill Marie Hall, Ljerka Ukrainczyk
Life of this patent
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Abstract
A mold with a multi-layer coating is disclosed. The mold may include a mold body having an outer surface and a multi-layer coating disposed on the outer surface. The multi-layer coating may include a diffusion barrier layer disposed on the outer surface of the mold body and an intermetallic layer disposed on the diffusion barrier layer, wherein the intermetallic layer comprises Ti, Al, and an additional metal selected from the group consisting of Zr, Ta, Nb, Y, Mo, Hf, and combinations thereof. The diffusion barrier layer may restrict diffusion of metal from the mold body to the intermetallic layer.
Claims13
A mold comprising:
- a mold body having an outer surface and a multi-layer coating disposed on the outer surface, wherein the multi-layer coating comprises:
- a diffusion barrier layer disposed on the outer surface of the mold body;
- and
- an intermetallic layer disposed on the diffusion barrier layer, wherein the intermetallic layer comprises Ti, Al, and an additional metal selected from the group consisting of Zr, Ta, Nb, Y, Mo, Hf, and combinations thereof, wherein the intermetallic layer comprises a change in the additional metal content with a lower molar content of the additional metal in a portion of the intermetallic layer closest to the diffusion barrier layer and a higher molar content of the additional metal in a portion of the intermetallic layer farthest from the diffusion barrier layer, and
- the diffusion barrier layer restricts diffusion of metal from the mold body to the intermetallic layer.
Dependencies are inferred from the claim text.