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US 10,882,774 B2Granted
Coatings for glass-shaping molds and molds comprising the same
AssigneeEntegris, Inc.
InventorsTroy Scoggins, Rex Gerald Sheppard, Carlo Waldfried
Life of this patent
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Abstract
Described are glass-forming molds made of a graphite mold body and a coating formed by atomic layer deposition, with the coating being made of alumina or a combination of alumina and yttria.
Claims10
A glass-forming mold comprising:
- a fine-grained graphite mold body having one or more mold features, wherein the fine-grained graphite has a grain size that is not greater than 10 microns;
- and
- a coating on the one or more mold features, the coating consisting essentially of alternating layers of alumina and yttria.
A method of making a glass-forming mold comprising:
- providing a fine-grained graphite mold body, wherein the fine-grained graphite has a grain size that is not greater than 10 microns;
- and
- depositing a coating on the fine-grained graphite mold body by atomic layer deposition, the coating consisting essentially of alternating layers of alumina and yttria.
A method of forming a glass article comprising:
- providing a fine-grained graphite mold body, wherein the fine-grained graphite has a grain size that is not greater than 10 microns;
- depositing a coating on the fine-grained graphite mold body by atomic layer deposition, the coating consisting essentially of alternating layers of alumina and yttria;
- and
- contacting a surface of the fine-grained graphite mold body with softened glass.
1 more element
Dependencies are inferred from the claim text.