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US 9,574,262 B2Granted
Scratch-resistant coatings, substrates having scratch-resistant coatings and methods for producing same
AssigneeSchott AG
InventorsChristian Henn, Thorsten Damm
Life of this patent
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Abstract
A substrate having a coating for enhanced scratch resistance is provided. The coating includes at least one high refractive index transparent hard material layer. The hard material layer includes crystalline aluminum nitride having a hexagonal crystal structure that exhibits a predominant (001) preferred orientation of the hexagonal symmetry.
Claims25
A coated substrate comprising:
- a substrate;
- and
- a coating for enhanced scratch resistance, the coating comprising at least one high refractive index transparent hard material layer, wherein the hard material layer includes crystalline aluminum nitride and wherein the aluminum nitride has a hexagonal crystal structure exhibiting a predominant (001) preferred orientation of at least one of the following:
- x(001)=I(001)/(I(001)+I(100)), and
- y(001)=I(001)/(I(001)+I(101)),
- as determined by an XRD measurement of the coating, that is greater than 0.5.
3 more elements
A coated substrate comprising:
- a substrate;
- and
- a coating for enhanced scratch resistance, the coating comprising at least one high refractive index transparent hard material layer, wherein the hard material layer includes crystalline aluminum nitride and wherein the aluminum nitride has a hexagonal crystal structure exhibiting a predominant (001) preferred orientation of hexagonal symmetry,
- wherein the hard material layer has an aluminum content, based on dopant material, that is greater than 50 wt %.
1 more element
A coated substrate comprising:
- a substrate;
- and
- a coating for enhanced scratch resistance, the coating comprising at least one high refractive index transparent hard material layer, wherein the hard material layer includes crystalline aluminum nitride and wherein the aluminum nitride has a hexagonal crystal structure exhibiting a predominant (001) preferred orientation of hexagonal symmetry,
- wherein the coating comprises an additional cover layer which is disposed above the hard material layer.
1 more element
Dependencies are inferred from the claim text.