Hydrophilic DLC on substrate with flame pyrolysis treatment
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-003/08
B05D-005/06
출원번호
US-0967342
(2004-10-19)
등록번호
US-7455883
(2008-11-25)
발명자
/ 주소
Petrmichl,Rudolph Hugo
Bienkiewicz,Joseph M.
Thomsen,Scott V.
출원인 / 주소
Guardian Industries Corp.
대리인 / 주소
Nixon & Vanderhye P.C.
인용정보
피인용 횟수 :
2인용 특허 :
20
초록
A substrate is coated with a layer(s) or coating(s) that includes, for example, amorphous carbon in a form of diamond-like carbon (DLC). The DLC is then subjected to flame pyrolysis in order to cause the contact angle θ thereof to decrease.
대표청구항▼
What is claimed is: 1. A method of making a coated article, the method comprising: depositing a layer comprising diamond-like carbon (DLC) on a substrate; after said depositing, subjecting the layer comprising DLC to a flame pyrolysis treatment in order to reduce a contact angle θ of the layer
What is claimed is: 1. A method of making a coated article, the method comprising: depositing a layer comprising diamond-like carbon (DLC) on a substrate; after said depositing, subjecting the layer comprising DLC to a flame pyrolysis treatment in order to reduce a contact angle θ of the layer comprising DLC. 2. The method of claim 1, further comprising, after subjecting the layer comprising DLC to the flame pyrolysis treatment, treating the layer comprising DLC with a hot liquid and/or vapor at a temperature of from about 50 to 200 degrees C. 3. The method of claim 1, further comprising, prior to the flame pyrolysis treatment, ion beam treating the layer comprising DLC with at least oxygen ions in order to reduce contact angle θ of the layer comprising DLC. 4. The method of claim 1, wherein the flame pyrolysis treatment causes the contact angle θ of the layer comprising DLC to decrease by at least about 20%. 5. The method of claim 1, wherein the flame pyrolysis treatment causes the contact angle θ of the layer comprising DLC to decrease by at least about 40%. 6. The method of claim 1, wherein the flame pyrolysis treatment causes the contact angle θ of the layer comprising DLC to decrease by at least about 50%. 7. The method of claim 1, wherein the flame pyrolysis treatment causes the contact angle θ of the layer comprising DLC to decrease by at least about 60%. 8. The method of claim 1, wherein the layer comprising DLC has an average hardness of at least 10 GPa. 9. The method of claim 1, wherein after said flame pyrolysis treatment, the layer comprising DLC has a contact angle θ of less than or equal to 25 degrees. 10. The method of claim 1, wherein after said flame pyrolysis treatment, the layer comprising DLC has a contact angle θ of less than or equal to 20 degrees. 11. The method of claim 1, wherein after said flame pyrolysis treatment, the layer comprising DLC has a contact angle θ of less than or equal to 15 degrees. 12. The method of claim 1, wherein after said flame pyrolysis treatment, the layer comprising DLC has a contact angle θ of less than or equal to 10 degrees. 13. The method of claim 1, wherein the layer comprising DLC is amorphous. 14. The method of claim 1, wherein the layer comprising DLC is hydrogenated. 15. The method of claim 1, wherein the layer comprising DLC has more sp3 carbon-carbon bonds than sp2 carbon-carbon bonds, and has an average density of at least about 2.4 grams/cm2. 16. The method of claim 1, further comprising ion beam treating the layer comprising DLC prior to said flame pyrolysis treatment, and wherein said ion beam treating comprises using at least one ion beam source that generates at least one ion beam toward a surface of the layer comprising DLC, and wherein at least oxygen gas is present in the ion beam source during the ion beam treating so that at least oxygen ions are directed toward the surface of the layer comprising DLC during said ion beam treating. 17. The method of claim 1, further comprising sputtering a low-E coating onto the substrate before depositing the layer comprising DLC, where the low-E coating is on either the same or opposite side of the substrate as the layer comprising DLC, and wherein the substrate is a glass substrate. 18. The method of claim 1, wherein the flame pyrolysis treatment comprises using a methane flame in air proximate the layer comprising DLC. 19. The method of claim 1, wherein the flame pyrolysis treatment comprises providing a flame proximate the layer comprising DLC, and introducing a gas or liquid into the flame, where the gas or liquid comprises oxygen and/or hydrogen. 20. The method of claim 1, wherein the flame pyrolysis treatment comprises providing a flame proximate the layer comprising DLC, and introducing a gas or liquid into the flame, where the gas or liquid comprises silicon and/or hydrogen. 21. The method of claim 1, wherein the flame pyrolysis treatment causes an outer surface of the layer comprising DLC to oxidize. 22. The method of claim 1, wherein the flame pyrolysis treatment causes an outer surface of the layer comprising DLC to oxidize, but does not cause another layer to be formed on the layer comprising DLC. 23. The method of claim 1, wherein the flame pyrolysis treatment causes a thin hydrophilic layer to be formed on the layer comprising DLC. 24. The method of claim 23, wherein the thin hydrophilic layer comprises silicon oxide, titanium oxide, or zirconium oxide. 25. The method of claim 1, wherein the flame pyrolysis is performed in an atmosphere at atmospheric pressure. 26. The method of claim 1, wherein a plurality of burners are used in the flame pyrolysis treatment. 27. The method of claim 1, wherein the layer comprising DLC is ion beam deposited on the substrate. 28. The method of claim 1, wherein the substrate is a glass substrate. 29. A window made using at least the method of claim 1. 30. A method of making a coated article, the method comprising: subjecting a layer comprising diamond-like carbon (DLC) to a flame pyrolysis treatment in order to reduce a contact angle θ of the layer comprising diamond-like carbon (DLC), the layer comprising DLC being provided on a substrate. 31. The method of claim 30, wherein the flame pyrolysis treatment causes the contact angle θ of the layer to decrease by at least about 20%. 32. The method of claim 30, wherein the flame pyrolysis treatment causes the contact angle θ of the layer to decrease by at least about 50%. 33. The method of claim 30, wherein after said flame pyrolysis treatment, the layer has a contact angle θ of less than or equal to 20 degrees. 34. The method of claim 30, wherein after said flame pyrolysis treatment, the layer has a contact angle θ of less than or equal to 10 degrees. 35. The method of claim 30, wherein the substrate comprises glass.
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