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US 9,266,768 B2Granted
High purity nickel molds for optical quality glass forming
AssigneeCorning Incorporated
InventorsKristen Marie Horn, David Myron Lineman, Kevin Thomas Morris, Wenchao Wang
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Abstract
The present disclosure relates to high purity nickel molds for use in forming three dimensional glass substrates, along with methods of making three dimensional glass substrates. The mold compositions minimize imperfections in the formed glass substrates providing optical quality shaped glass articles for use in electronics applications.
Claims21
A substrate for shaping glass comprising:
- a. a mold having a shaping surface, wherein the mold comprises greater than 93% nickel;
- and
- b. a nickel oxide layer on the shaping surface, wherein the nickel oxide layer has a thickness from about 500 nm to about 20 μm,
- wherein a waviness height (Wa) of the mold surface is less than 100 nm over a 1 cm evaluation length and a root mean squared roughness (RRMS) of the mold surface is less than 3 μm over a 1 cm evaluation length.
1 more element
Dependencies are inferred from the claim text.