Process for anodically coating an aluminum substrate with ceramic oxides prior to polytetrafluoroethylene or silicone coating
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C25D-011/06
C25D-011/04
C23C-028/00
출원번호
UP-0972592
(2004-10-25)
등록번호
US-7569132
(2009-08-24)
발명자
/ 주소
Dolan, Shawn E.
출원인 / 주소
Henkel KGaA
대리인 / 주소
Cameron, Mary K.
인용정보
피인용 횟수 :
10인용 특허 :
62
초록▼
An article of manufacture and a process for making the article by the anodization of aluminum and aluminum alloy workpieces to provide corrosion-, heat-and abrasion-resistant ceramic coatings comprising titanium and/or zirconium oxides, and the subsequent coating of the anodized workpiece with polyt
An article of manufacture and a process for making the article by the anodization of aluminum and aluminum alloy workpieces to provide corrosion-, heat-and abrasion-resistant ceramic coatings comprising titanium and/or zirconium oxides, and the subsequent coating of the anodized workpiece with polytetrafluoroethylene ("PTFE") or silicone containing coatings. The invention is especially useful for forming longer life PTFE coatings on aluminum substrates by pre-coating the substrate with an anodized layer of titanium and/or zirconium oxide that provides excellent corrosion-, heat-and abrasion-resistance in a hard yet flexible film.
대표청구항▼
What is claimed is: 1. A method of forming a protective coating on a surface of a metal article comprising aluminum or aluminum alloy, said method comprising: A) providing an anodizing solution comprised of water and one or more additional components selected from the group consisting of: a) water-
What is claimed is: 1. A method of forming a protective coating on a surface of a metal article comprising aluminum or aluminum alloy, said method comprising: A) providing an anodizing solution comprised of water and one or more additional components selected from the group consisting of: a) water-soluble complex fluorides, b) water-soluble complex oxyfluorides, c) water-dispersible complex fluorides, and d) water-dispersible complex oxyfluorides of elements selected from the group consisting of Ti, Zr, Hf, Sn, Al, Ge and B and mixtures thereof; B) providing a cathode in contact with said anodizing solution; C) placing a metal article comprising aluminum or aluminum alloy as an anode in said anodizing solution; D) passing a current between the anode and cathode through said anodizing solution for a time effective to form a first protective coating on the surface of the metal article; E) removing the metal article having a first protective coating from the anodizing solution and drying said article; and F) applying one or more layers of paint to the metal article having a first protective coating, at least one of said layers comprising PTFE or silicone, to form a second protective coating; wherein the current is pulsed direct current. 2. The method of claim 1 wherein the first protective coating comprises titanium dioxide and/or zirconium oxide. 3. The method of claim 1 wherein the first protective coating is comprised of titanium dioxide. 4. The method of claim 1 wherein said anodizing solution is maintained at a temperature of from 0° C. to 90° C. during step (D). 5. The method of claim 1 wherein the pulsed direct current has a peak voltage of 300-600 volts. 6. The method of claim 5 wherein said current is pulsed direct current having an average voltage of not more than 200 volts. 7. The method of claim 1 wherein during step (D) said protective coating is formed at a rate of at least 1 micron thickness per minute. 8. The method of claim 1 wherein said second protective coating comprises a topcoat comprising PTFE or silicone and at least one additional paint layer between the topcoat and the first protective coating. 9. The method of claim 1 wherein the anodizing solution is prepared using a complex fluoride selected from the group consisting of H2TiF6, H2ZrF6, H2HfF6, H2SnF6, H2GeF6, H3AlF6, HBF4 and salts and mixtures thereof. 10. The method of claim 1 wherein the anodizing solution is additionally comprised of a phosphorus containing acid and/or salt. 11. The method of claim 1 wherein the anodizing solution is additionally comprised of a chelating agent. 12. The method of claim 1 wherein pH of the anodizing solution is adjusted using ammonia, an amine, an alkali metal hydroxide or a mixture thereof. 13. A method of forming a protective coating on a surface of a metallic article comprised predominantly of aluminum, said method comprising: A) providing an anodizing solution comprised of water, a phosphorus containing acid and/or salt, and one or more additional components selected from the group consisting of water-soluble and water-dispersible complex fluorides and mixtures thereof, said fluorides comprising elements selected from the group consisting of Ti, Zr, Hf, Sn, Ge, B and combinations thereof; B) providing a cathode in contact with said anodizing solution; C) placing a metallic article comprised predominantly of aluminum as an anode in said anodizing solution; D) passing a pulsed direct current, a non-pulsed direct current or an alternating current between the anode and the cathode for a time effective to form a first protective coating on the surface of the metal article; E) removing the metal article having a first protective coating from the anodizing solution and drying said article; and F) applying one or more layers of paint to the metal article having a first protective coating, at least one of said layers comprising PTFE or silicone, to form a second protective coating; wherein pulsed direct current passing between the anode and cathode has a peak voltage from 300 to 600 volts and wherein non-pulsed direct current or alternating current passing between the anode and cathode has an voltage of about 200 to about 600 volts. 14. The method of claim 13 wherein the anodizing solution is prepared using a complex fluoride comprising an anion comprising at least 4 fluorine atoms and at least one atom selected from the group consisting of Ti, Zr, and combinations thereof. 15. The method of claim 13 wherein the anodizing solution is prepared using a complex fluoride selected from the group consisting of H2TiF6, H2ZrF6, salts of H2TiF6, salts of H2ZrF6, and mixtures thereof. 16. The method of claim 13 wherein said complex fluoride is introduced into the anodizing solution at a concentration of at least 0.1 M. 17. The method of claim 13 wherein the direct current has an average voltage of not more than 250 volts. 18. The method of claim 13 wherein the anodizing solution is additionally comprised of a chelating agent. 19. The method of claim 13 wherein the anodizing solution is comprised of at least one complex oxyfluoride prepared by combining at least one complex fluoride of at least one element selected from the group consisting of Ti, Zr, and at least one compound which is an oxide, hydroxide, carbonate or alkoxide of at least one element selected from the group consisting of Ti, Zr, Hf, Sn, B, Al and Ge. 20. The method of claim 13 wherein the anodizing solution has a pH of from about 2 to about 6. 21. A method of forming a protective coating on an article having a metallic surface comprised of aluminum or aluminum alloy, said method comprising: A) providing an anodizing solution, said anodizing solution having been prepared by dissolving a water-soluble complex fluoride and/or oxyfluoride of an element selected from the group consisting of Ti, Zr, Hf, Sn, Ge, B and combinations thereof and an inorganic acid or salt thereof that contains phosphorus in water; B) providing a cathode in contact with said anodizing solution; C) placing an article comprising at least one metallic surface comprised of aluminum or aluminum alloy as an anode in said anodizing solution; D) passing a direct current or an alternating current between the anode and the cathode for a time effective to form a first protective coating on the at least one metallic surface; E) removing the article comprising at least one metallic surface having a first protective coating from the anodizing solution and drying said article; and F) applying one or more layers of paint to the first protective coating, at least one of said layers comprising PTFE or silicone, to form a second protective coating; wherein at least one compound which is an oxide, hydroxide, carbonate or alkoxide of at least one element selected from the group consisting of Ti, Zr, Hf, Sn, B, Al and Ge is additionally used to prepare said anodizing solution. 22. The method of claim 21 wherein pH of the anodizing solution is adjusted using ammonia, an amine, an alkali metal hydroxide or a mixture thereof. 23. The method of claim 21 wherein the current is pulsed direct current having an average voltage of not more than 125 volts. 24. The method of claim 21 wherein the anodizing solution is additionally comprised of a chelating agent. 25. A method of forming a protective coating on a surface of an article comprised of aluminum, said method comprising A) providing an anodizing solution, said anodizing solution having been prepared by combining one or more water-soluble complex fluorides of titanium and/or zirconium or salts thereof, a phosphorus containing oxy acid and/or salt and optionally, an oxide, hydroxide, carbonate or alkoxide of zirconium; B) providing a cathode in contact with said anodizing solution; C) placing an article comprised of aluminum as an anode in said anodizing solution; and D) passing a pulsed direct current, a non-pulsed direct current or an alternating current between the anode and the cathode for a time effective to form said protective coating on a surface of the article; E) removing the article having a first protective coating from the anodizing solution and drying said article; and F) applying one or more layers of paint to the article having a first protective coating, at least one of said layers comprising PTFE or silicone, to form a second protective coating; wherein pulsed direct current passing between the anode and cathode has a peak voltage from 300 to 600 volts and wherein non-pulsed direct current or alternating current passing between the anode and cathode has an voltage of about 200 to about 600 volts. 26. The method of claim 25 wherein one or more of H2TiF6, salts of H2TiF6, H2ZrF6, and salts of H2ZrF6 is used to prepare the anodizing solution. 27. The method of claim 25 wherein zirconium basic carbonate is used to prepare the anodizing solution. 28. The method of claim 25 wherein the one or more water-soluble complex fluorides is a complex fluoride of titanium and the current is direct current. 29. The method of claim 25 wherein the anodizing solution has been prepared by combining about 0.1 to about 1 weight percent zirconium basic carbonate and about 10 to about 16 weight percent H2ZrF6 or salt thereof in water and adding a base if necessary to adjust the pH of the anodizing solution to between about 3 and about 5. 30. A method of forming a protective coating on a surface of a metal article comprising aluminum or aluminum alloy, said method comprising: A) providing an anodizing solution comprised of water and one or more additional components selected from the group consisting of: a) water-soluble complex fluorides, b) water-soluble complex oxyfluorides, c) water-dispersible complex fluorides, and d) water-dispersible complex oxyfluorides of elements selected from the group consisting of Ti, Zr, Hf, Sn, Al, Ge and B and mixtures thereof; B) providing a cathode in contact with said anodizing solution; C) placing a metal article comprising aluminum or aluminum alloy as an anode in said anodizing solution; D) passing a current between the anode and cathode through said anodizing solution for a time effective to form a first protective coating on the surface of the metal article; E) removing the metal article having a first protective coating from the anodizing solution; and F) applying one or more layers of paint to the metal article having a first protective coating, at least one of said layers comprising PTFE or silicone, to form a second protective coating; wherein the current is pulsed direct current. 31. The method of claim 30 wherein the first protective coating comprises titanium dioxide and/or zirconium oxide. 32. The method of claim 30 wherein the first protective coating is comprised of titanium dioxide. 33. The method of claim 30 wherein said current is pulsed direct current having an average voltage of not more than 200 volts. 34. The method of claim 30 wherein said pulsed direct current has a peak voltage of 350-550 volts. 35. A method of forming a protective coating on a surface of a metal article comprising aluminum or aluminum alloy, said method comprising: A) providing an anodizing solution comprised of water and one or more additional components selected from the group consisting of: a) water-soluble complex fluorides, b) water-soluble complex oxyfluorides, c) water-dispersible complex fluorides, and d) water-dispersible complex oxyfluorides of elements selected from the group consisting of Ti, Zr, Hf, Sn, Al, Ge and B and mixtures thereof; B) providing a cathode in contact with said anodizing solution; C) placing a metal article comprising aluminum or aluminum alloy as an anode in said anodizing solution; D) passing a current between the anode and cathode through said anodizing solution for a time effective to form a first protective coating on the surface of the metal article; E) removing the metal article having a first protective coating from the anodizing solution; and F) applying one or more layers of paint to the metal article having a first protective coating to form a second protective coating; wherein the current is pulsed direct current. 36. The method of claim 35 wherein the first protective coating comprises titanium dioxide and/or zirconium oxide. 37. The method of claim 35 wherein the first protective coating is comprised of titanium dioxide. 38. The method of claim 37 wherein the anodizing solution is additionally comprised of a phosphorus containing acid and/or salt. 39. The method of claim 35 wherein the anodizing solution is prepared using a complex fluoride selected from the group consisting of H2TiF6, H2ZrV6, H2HfF6, H2SnF6, H2GeF6, H3AlF6, HBF4 and salts and mixtures thereof. 40. The method of claim 35 wherein said current is pulsed direct current having an average voltage of not more than 200 volts. 41. The method of claim 35 wherein said pulsed direct current has a peak voltage of 300-600 volts. 42. The method of claim 35 wherein said pulsed direct current has an average voltage in a range of 75 volts to 250 volts.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (62)
Bosc Richard (Voreppe FRX) Brugerolle Pierre (Sainte-Mnhould FRX) Jupin Alain (Sainte-Mnhould FRX) Layre Ren (Grenoble FRX), Aluminum-based composite and containers produced therefrom.
Casson ; Jr. Edward A. (Easton MD) Gaul Albro T. (Matawan NJ) Langlais Eugene L. (Detroit MI) Shadlen Gerald (Arnold MD) Vanaver Eugene L. (Dallas TX), Corrosion resistant metallic plates particularly useful as support members for photo-lithographic plates and the like.
Tsutomu Higuchi JP; Mitsuo Suzuki JP; Makoto Dobashi JP, Corrosion resistant, magnesium-based product exhibiting luster of base metal and method for producing the same.
Gillich Thomas N. (Whitehouse Station NJ) Walls John E. (Annandale NJ) Wanat Stanley F. (Scotch Plains NJ) Rozell William J. (Martinsville NJ), Electrochemically treated metal plates.
Gillich Thomas N. (Whitehouse Station NJ) Walls John E. (Annandale NJ) Wanat Stanley F. (Scotch Plains NJ) Rozell William J. (Martinsville NJ), Electrolytes for electrochemically treated metal plates.
Riabkov Vitalig M.,RUX ; Steblianko Valerij L.,RUX, Electrolytic process for cleaning and coating electrically conducting surfaces and product thereof.
Kojima Shunji (Yokosuka JPX) Watanabe Yoshiki (Yokohama JPX) Goto Hiroaki (Tokyo JPX) Moriga Toshinori (Yokohama JPX), Emulsion type water paint, process for its production, and process for applying same.
Alkhimov Anatoly P. (ulitsa Vyazemskogo 2 ; kv. 72 Novosibirsk SUX) Papyrin Anatoly N. (ulitsa Vyazemskogo 2 ; kv. 72 Novosibirsk SUX) Kosarev Vladimir F. (Novosibirsk SUX) Nesterovich Nikolai I. (No, Gas-dynamic spraying method for applying a coating.
Birkle Siegfried (Hochstadt DEX) Stoger Klaus (Nuremberg DEX) De Vries Hans (Heerde NLX), Method for anodizing aluminum materials and aluminized parts.
Kurze Peter (Oberlichtenau DDX) Krysmann Waldemar (Karl-Marx-Stadt DDX) Berger Maria (Karl-Marx-Stadt DDX) Rabending Klaus (Taura DDX) Schreckenbach Joachim (Limbach-Oberfrohna DDX) Schwarz Thomas (K, Method for the preparation of decorative coating on metals.
Hradcovsky Rudolf (27 W. Beach St. Long Beach NY 11561), Method of coating aluminum with alkali metal molybdenate-alkali metal silicate or alkali metal tungstenate-alkali metal.
Schmeling Edith L. (Brhl-Badorf DEX) Rschenbleck Benno (Osnabrck DEX) Weidemann Michael H. (Kerpen-Horrem DEX), Method of preparing the surfaces of magnesium and magnesium alloys.
Kurze Peter (Dren DEX) Banerjee Dora (Kerpen DEX) Kletke Hans-Jrgen (Dren DEX), Method of producing oxide ceramic layers on barrier layer-forming metals and articles produced by the method.
Kurze Peter,DEX ; Banerjee Dora,DEX ; Kletke Hans-Jurgen,DEX, Method of producing oxide ceramic layers on barrier layer-forming metals and articles produced by the method.
Schmeling Edith L. (Brhl-Badorf DEX) Rschenbleck Benno (Osnabrck DEX) Weidemann Michael H. (Kerpen-Horrem DEX), Method of producing protective coatings that are resistant to corrosion and wear on magnesium and magnesium alloys.
Danroc Joel,FRX ; Juliet Pierre,FRX ; Rouzaud Andre,FRX, Multi-layer material with an anti-erosion, anti-abrasion, and anti-wear coating on a substrate made of aluminum, magnesium or their alloys.
Gillich Thomas N. (Whitehouse Station NJ) Walls John E. (Annandale NJ) Wanat Stanley F. (Scotch Plains NJ) Rozell William J. (Martinsville NJ), Novel electrolytes for electrochemically treated metal plates.
Kataoka Akiyoshi (Kabushiki Kaisha Shokosha nai ; 8-16 ; Higashi 1-chome Hanaten ; Tsurumi-ku ; Osaka JPX), Process for electrolytically forming glossy film on articles of aluminum or alloy thereof.
Grunwald ; John J. ; D'Ottavio ; Eugene D. ; Rhodenizer ; Harold L. ; L ombardo ; Michael S., Process of preparing thermoset resin substrates to improve adherence of electrolessly plated metal deposits.
Bartak Duane E. (Grand Forks ND) Lemieux Brian E. (East Grand Forks MN) Woolsey Earl R. (Grand Forks ND), Two-step chemical/electrochemical process for coating magnesium alloys.
Bartak Duane E. (Grand Forks ND) Lemieux Brian E. (East Grand Forks MN) Woolsey Earl R. (Grand Forks ND), Two-step electrochemical process for coating magnesium alloys.
Dolan, Shawn E., Article of manufacture and process for anodically coating an aluminum substrate with ceramic oxides prior to organic or inorganic coating.
Dolan, Shawn E., Article of manufacture and process for anodically coating an aluminum substrate with ceramic oxides prior to polytetrafluoroethylene or silicone coating.
Dolan, Shawn E.; Ziehm, Mark W.; Kuhns, Eric C.; Lombardo, Jr., Michael, Electroceramic coating of a wire for use in a bundled power transmission cable.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.