Wear-resistant liquid-based coatings for glass

• US 10,358,383 B2
• Filed: 05/01/2017
• Issued: 07/23/2019
• Est. Priority Date: 11/08/2013
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: O'Malley, Shawn Michael, Schneider, Vitor Marino
• Primary Examiner(s): Sample, David
• Application Number:
  US15/582,961
• Publication Number:
  US 20170253523A1
• Time in Patent Office: 813 Days
• Field of Search: None
• CPC Class Codes: B05D 3/0254 After-treatment
• CPC Class Codes: C03C 17/007 containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
• CPC Class Codes: C03C 17/25 by deposition from the liquid phase
• CPC Class Codes: C03C 17/256 Coating containing TiO2
• CPC Class Codes: C03C 2217/22 ZrO2
• CPC Class Codes: C03C 2217/425 consisting of a porous layer
• CPC Class Codes: C03C 2217/45 Inorganic continuous phases
• CPC Class Codes: C03C 2217/475 Inorganic materials
• CPC Class Codes: C03C 2217/76 Hydrophobic and oleophobic coatings
• CPC Class Codes: C03C 2217/78 Coatings specially designed to be durable, e.g. scratch-resistant
• CPC Class Codes: C03C 2218/113 by sol-gel processes
• CPC Class Codes: C03C 2218/32 After-treatment
• CPC Class Codes: C23C 18/06 Coating on selected surface areas, e.g. using masks
• CPC Class Codes: C23C 18/1216 Metal oxides C23C18/1212 takes precedence
• CPC Class Codes: C23C 18/1245 Inorganic substrates other than metallic
• CPC Class Codes: C23C 18/1254 Sol or sol-gel processing
• CPC Class Codes: C23C 18/127 Preformed particles
• CPC Class Codes: C23C 18/1283 Control of temperature, e.g. gradual temperature increase, modulation of temperature
• CPC Class Codes: Y10T 428/24997 Of metal-containing material

Abstract

A sol-gel method for forming durable, scratch-resistant coatings on glass substrates. Zirconia coatings, for example, are formed from a solution of zirconium oxychloride octahydrate in an organic, polar, aprotic solvent such as dimethylformamide. Annealed coatings, which optionally include an additive such as graphene, have a low coefficient of friction and can exhibit high hardness and hydrophobicity.

Claims

1. A glass article comprising:

a glass substrate;

a patterned zirconia coating disposed over at least a portion of a major surface of the glass substrate; and

graphene particles dispersed throughout the zirconia coating.

2. The glass article according to claim 1, wherein the zirconia coating is porous.

3. The glass article according to claim 1, further comprising carbon and/or chlorine localized within pores of the zirconia coating.

4. The glass article according to claim 1, wherein the zirconia coating is hydrophobic.

5. The glass article according to claim 1, wherein the graphene particles comprise an average particle size ranging from about 10 nm to about 5000 nm.

6. The glass article according to claim 1, wherein the graphene particles comprise 0.1 wt. % to 10 wt. % of the zirconia coating.

7. The glass article according to claim 1, wherein the zirconia coating comprises one or both tetragonal (T) zirconia and monoclinic (M) zirconia.

8. The glass article according to claim 1, wherein the zirconia coating further comprises titanium oxide.

9. The glass article according to claim 1, wherein the glass article comprises a coefficient of friction in a range from about 0.1 to about 0.13.

10. The glass article according to claim 1, wherein the glass substrate comprises chemically strengthened glass.

11. A pharmaceutical packaging comprising a glass article according to claim 1.

12. The pharmaceutical packaging according to claim 11, wherein the glass substrate comprises chemically strengthened glass.

13. A glass article comprising:

a glass substrate;

a zirconia coating disposed over at least a portion of a major surface of the glass substrate; and

carbon nanotubes dispersed throughout the zirconia coating.

14. A pharmaceutical packaging comprising a glass article according to claim 13.

15. The pharmaceutical packaging of claim 14, wherein the glass substrate comprises chemically strengthened glass.

16. A glass article comprising:

a glass substrate;

a zirconia-titania coating disposed over at least a portion of a major surface of the glass substrate; and

graphene particles dispersed throughout the zirconia-titania coating.

17. A pharmaceutical packaging comprising a glass article according to claim 16.

18. The pharmaceutical packaging of claim 17, wherein the glass substrate comprises chemically strengthened glass.