Alkaline earth fluoride coatings deposited via combustion deposition

• US 20090274930A1
• Filed: 04/30/2008
• Published: 11/05/2009
• Est. Priority Date: 04/30/2008
• Status: Abandoned Application

• Current Assignee: Guardian Glass LLC (KOCH Industries Incorporated)
• Original Assignee: Guardian Industries Corporation (KOCH Industries Incorporated)
• Inventors: Remington, Michael P. JR.
• Application Number:
  US12/149,396
• Publication Number:
  US 20090274930A1
• Time in Patent Office: Days
• US Class Current: 428/689
• CPC Class Codes: C03C 17/002 for flat glass, e.g. float glass
• CPC Class Codes: C03C 17/22 with other inorganic material C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 2217/285 Fluorides
• CPC Class Codes: C03C 2217/732 made of a single layer
• CPC Class Codes: C23C 16/30 Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
• CPC Class Codes: C23C 16/453 passing the reaction gases through burners or torches, e.g. atmospheric pressure CVD C23C16/513 takes precedence; for flame or plasma spraying of coating material in the molten state C23C4/00

Abstract

Certain example embodiments of this invention relate to the combustion deposition depositing of alkaline earth fluoride inclusive coatings on substrates from a metal inclusive organic precursor and a fluorinating reagent, or from a single-source precursor. In certain example embodiments, the fluorinating reagent may be an organic source or an inorganic source. In certain example embodiments, the alkaline earth fluoride inclusive coating may be a magnesium fluoride (e.g., MgF₂ or other suitable stoichiometry) inclusive coating, although other Group 2 metals may be used in place of magnesium. In certain example embodiments, the alkaline earth fluoride inclusive coating may be an anti-reflective (AR) coating.

Claims

1. A method of forming a coating on a glass substrate using combustion deposition, the method comprising:

providing a glass substrate having at least one surface to be coated;

introducing an alkaline earth metal inclusive precursor and a fluorinating reagent to be combusted by a flame;

combusting at least a portion of the precursor and at least a portion of the reagent to form a combusted material, the combusted material comprising non-vaporized material; and

providing the glass substrate in an area so that the glass substrate is heated sufficiently to allow the combusted material to form the coating, directly or indirectly, on the glass substrate.

2. The method of claim 1, wherein the precursor is an organic, metal-inclusive precursor.

3. The method of claim 2, wherein the organic metal inclusive precursor is a magnesium inclusive precursor.

4. The method of claim 2, wherein the metal-inclusive precursor is [Me(OR)₂]_x, where Me is a Group 2 metal and R is a saturated organic group containing 1 to 5 carbon atoms.

5. The method of claim 4, wherein the magnesium inclusive precursor is at least one of a metal alkoxyalkoxide or Me(OROR′

)₂, metal acetoacetonate or Me(acac)₂, metal alkanoate or Me(OOCR)₂, fluorinated acetoacetonate or Me(acac^F)₂, and suitable stoichiometries thereof.

6. The method of claim 3, wherein the magnesium inclusive precursor is a fluorinated acetoacetonate, the fluorinated acetoacetonate being tri- or hexafluoropentanedionates.

7. The method of claim 1, wherein the fluorinating reagent is an organic fluorinating reagent.

8. The method of claim 7, wherein the organic fluorinating reagent comprises at least one of hexafluoro benzene (C₆F₆ or other suitable stoichiometry) and trifluoro toluene, C₇H₅F₃ (as C₆H₅CF₃ or C₆H₂F₃CH₃, or other suitable stoichiometry)

9. The method of claim 7, wherein the organic fluorinating reagent is a fluorinated carboxylic acid or a fluorinated alcohol.

10. The method of claim 9, wherein the organic fluorinating reagent is a fluorinated carboxylic acid or acid anhydride comprising at least one of trifluoro acetic acid (CF₃COOH or other suitable stoichiometry), and trifluoro acetic anhydride.

11. The method of claim 9, wherein the organic fluorinating reagent is a fluorinated alcohol comprising (F₃C)₃COH (or other suitable stoichiometry).

12. The method of claim 1, wherein the fluorinating reagent is an inorganic fluorinating reagent.

13. The method of claim 12, wherein the inorganic fluorinating reagent comprises at least one of NF₃, SF₆, and suitable stoichiometries of the same.

14. The method of claim 1, wherein the coating is a magnesium fluoride inclusive coating that exhibits anti-reflective properties.

15. The method of claim 1, further comprising depositing at least one additional coating via combustion deposition on a second surface of the glass substrate.

24. The method of claim 3, wherein the magnesium inclusive precursor is a metal alkanoate, the metal alkanoate being methacrylate or 2-ethylhexanoate.

16. A method of forming a coating on a glass substrate using combustion deposition, the method comprising:

providing a glass substrate having at least one surface to be coated;

introducing a single-source precursor to be combusted by a flame, the single-source precursor being alkaline earth metal and fluorine inclusive;

combusting at least a portion of the precursor to form a combusted material, the combusted material comprising non-vaporized material; and

providing the glass substrate in an area so that the glass substrate is heated sufficiently to allow the combusted material to form the coating, directly or indirectly, on the glass substrate,

wherein the coating is a metal fluoride coating.

17. The method of claim 16, wherein the single-source precursor is a fluorinated acetoacetonate or Me(acac^F)₂, where Me is a Group 2 metal.

18. The method of claim 17, wherein the fluorinated acetoacetonate is a tri- or hexafluoropentanedionate.

19. The method of claim 16, wherein the single-source precursor is a fluorinated metal alkoxide, alkanoate, or alkoxyalkoxide.

20. The method of claim 16, further comprising depositing at least one additional coating via combustion deposition on a second surface of the glass substrate.

21. A method of making a coated article including a combustion deposition deposited coating, the method comprising:

providing a glass substrate having at least one surface to be coated;

introducing an alkaline earth metal inclusive precursor and a fluorinating reagent to be combusted by a flame;

combusting at least a portion of the precursor and at least a portion of the reagent to form a combusted material, the combusted material comprising non-vaporized material; and

providing the glass substrate in an area so that the glass substrate is heated sufficiently to allow the combusted material to form the coating, directly or indirectly, on the glass substrate.

22. A method of making a coated article including a combustion deposition deposited coating, the method comprising:

providing a glass substrate having at least one surface to be coated;

introducing a single-source precursor to be combusted by a flame, the single-source precursor being alkaline earth metal and fluorine inclusive;

combusting at least a portion of the precursor to form a combusted material, the combusted material comprising non-vaporized material; and

providing the glass substrate in an area so that the glass substrate is heated sufficiently to allow the combusted material to form the coating, directly or indirectly, on the glass substrate,

wherein the coating is a metal fluoride coating.

23. A coated article, comprising:

a substrate; and

a combustion deposition deposited alkaline earth metal fluoride coating supported by the substrate,

wherein the alkaline earth metal fluoride coating includes at least one of magnesium, calcium, strontium, and barium, and wherein the coating is a single-layer anti-reflective coating.