EP0460701B1 - A method of forming a corrosion-resistant protective coating on aluminum substrate - Google Patents
A method of forming a corrosion-resistant protective coating on aluminum substrate Download PDFInfo
- Publication number
- EP0460701B1 EP0460701B1 EP19910109363 EP91109363A EP0460701B1 EP 0460701 B1 EP0460701 B1 EP 0460701B1 EP 19910109363 EP19910109363 EP 19910109363 EP 91109363 A EP91109363 A EP 91109363A EP 0460701 B1 EP0460701 B1 EP 0460701B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum
- corrosion
- protective coating
- aluminum substrate
- fluorine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/34—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/80—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Vapour Deposition (AREA)
- Drying Of Semiconductors (AREA)
Description
Claims (8)
- A method of forming a corrosion-resistant protective coating on an aluminum substrate which comprises the steps of(a) forming on said aluminum substrate an aluminum oxide layer, and(b) contacting the aluminum oxide layer with at least one gas selected from fluorine and a fluorine compound at an elevated temperature of at least 375°C,
whereby a protective layer having from 3 to 18 wt.% fluorine will be formed on said aluminum surface. - The method of forming a corrosion-resistant protective coating on an aluminum substrate of claim 1, wherein the aluminum oxide layer formed in step (a) has a thickness of at least 0.1 µm, and preferably not exceeding about 20 µm.
- The method of forming a corrosion-resistant, protective coating on an aluminum substrate of claim 1 or 2, wherein step (b) is carried out for a time period within a range of from 30 minutes to 120 minutes and/or at a temperature ranging from 375°C to 500°C, more preferably 450°C to 475°C, said fluorine-containing gases in step (b) being preferably selected from the class consisting of HF, F2, NF3, CF4, CHF3, and C2F6.
- The method of forming a corrosion-resistant protective coating on an aluminum substrate of one of the preceding claims wherein step (b) is effected at a fluorine-containing gas concentration of from 5 to 100 volume %, and/or a pressure of from 1.333 mbar (1 Torr) to atmospheric pressure.
- The method of forming a corrosion-resistant protective coating on an aluminum substrate of one of the preceding claims, wherein the aluminum substrate has a purity of preferably at least about 99 wt.%, the aluminum oxide layer is formed anodically in an anodizing bath at a temperature in the range of from 0°C to 30°C using an anodizing voltage of from 15 to 45 volts D.C. until the current falls to below from 111 to 667 A/m2 (10 to 60 amperes/ft2).
- The method of forming a corrosion-resistant protective coating on an aluminum substrate according to one of claims 1 to 4, wherein the aluminum substrate has a purity of preferably at least about 99 wt.%, and the aluminum oxide layer is formed by contacting said aluminum substrate for from 10 to 200 hours with an oxidizing gas containing from about 15 to 100 wt.% oxygen and heated within a temperature range of from 350°C to 500°C.
- The method of forming a corrosion-resistant protective coating on an aluminum substrate according to one of the preceding claims wherein the aluminum oxide layer is a high purity aluminum oxide layer, having a purity of at least 97 wt.%, preferably greater that 99 wt.%, the one or more fluorine-containing gases are high purity fluorine-containing gases containing less that 100 ppm impurities other than carrier gases and the so formed corrosion-resistant protective coating has a high purity, i.e. it contains less that about 3 wt.%, and preferably less than about 1 wt.% of elements other than aluminum, oxygen, hydrogen and fluorine.
- A method of forming a corrosion-resistant protective coating on an aluminum substrate according to one of the preceding claims, whereby a protective layer having from 3 to 18 wt.% fluorine will be formed on said aluminum substrate.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US534796 | 1990-06-07 | ||
US07/534,807 US5069938A (en) | 1990-06-07 | 1990-06-07 | Method of forming a corrosion-resistant protective coating on aluminum substrate |
US07/534,796 US5192610A (en) | 1990-06-07 | 1990-06-07 | Corrosion-resistant protective coating on aluminum substrate and method of forming same |
US534807 | 1990-06-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0460701A1 EP0460701A1 (en) | 1991-12-11 |
EP0460701B1 true EP0460701B1 (en) | 1998-03-04 |
Family
ID=27064592
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910109362 Expired - Lifetime EP0460700B1 (en) | 1990-06-07 | 1991-06-07 | Corrosion-resistant protective coating on aluminum substrate or surface and method of forming same |
EP19910109363 Expired - Lifetime EP0460701B1 (en) | 1990-06-07 | 1991-06-07 | A method of forming a corrosion-resistant protective coating on aluminum substrate |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910109362 Expired - Lifetime EP0460700B1 (en) | 1990-06-07 | 1991-06-07 | Corrosion-resistant protective coating on aluminum substrate or surface and method of forming same |
Country Status (2)
Country | Link |
---|---|
EP (2) | EP0460700B1 (en) |
DE (2) | DE69128982T2 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1120817B8 (en) * | 1991-03-26 | 2007-10-10 | Ngk Insulators, Ltd. | Use of a corrosion-resistant member |
EP0760526A4 (en) * | 1994-05-17 | 2001-01-10 | Hitachi Ltd | Device and method for plasma treatment |
US5756222A (en) * | 1994-08-15 | 1998-05-26 | Applied Materials, Inc. | Corrosion-resistant aluminum article for semiconductor processing equipment |
FR2730746B1 (en) * | 1995-02-16 | 1997-04-30 | Fond Et Ateliers Du Belier | METHOD OF WETTING AN ALUMINUM INSERT IN AN ALUMINUM MOLDED PART |
JP3689524B2 (en) * | 1996-03-22 | 2005-08-31 | キヤノン株式会社 | Aluminum oxide film and method for forming the same |
US6280597B1 (en) | 1997-09-12 | 2001-08-28 | Showa Denko K.K. | Fluorinated metal having a fluorinated layer and process for its production |
JP3094000B2 (en) * | 1997-09-12 | 2000-10-03 | 昭和電工株式会社 | Metal material or metal film having fluorinated surface layer and fluoridation method |
JP4054148B2 (en) * | 1999-02-01 | 2008-02-27 | 日本碍子株式会社 | Corrosion-resistant member manufacturing method and corrosion-resistant member |
KR100767762B1 (en) * | 2000-01-18 | 2007-10-17 | 에이에스엠 저펜 가부시기가이샤 | A CVD semiconductor-processing device provided with a remote plasma source for self cleaning |
DE10028772B4 (en) * | 2000-06-07 | 2005-03-17 | Technische Universität Dresden | Aluminum material with ultrahydrophobic surface, process for its preparation and use |
CA2461523A1 (en) * | 2001-10-25 | 2003-05-01 | Showa Denko K.K. | Heat exchanger, method for fluorination of the heat exchanger or component members thereof, and method of manufacturing the heat exchanger |
US6632325B2 (en) * | 2002-02-07 | 2003-10-14 | Applied Materials, Inc. | Article for use in a semiconductor processing chamber and method of fabricating same |
JP2006128370A (en) | 2004-10-28 | 2006-05-18 | Tokyo Electron Ltd | Film forming apparatus and metod, program, and recording medium |
DE102016102504A1 (en) | 2016-02-08 | 2017-08-10 | Salzgitter Flachstahl Gmbh | Aluminum-based coating for steel sheets or steel strips and method of making same |
DE102018101183A1 (en) * | 2017-10-17 | 2019-04-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Passive electrical component with insulating layer |
US20200010946A1 (en) * | 2018-07-05 | 2020-01-09 | The Board Of Trustees Of The University Of Illinois | Ferrous structural component for use in fouling and corrosive environments, and method of making and using a ferrous structural component |
CN113026010A (en) * | 2021-01-29 | 2021-06-25 | 昆明理工大学 | Environment-friendly alkaline passivation solution for aluminum material |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4111762A (en) * | 1975-01-31 | 1978-09-05 | Martin Marietta Corporation | Optically black coating and process for forming it |
-
1991
- 1991-06-07 EP EP19910109362 patent/EP0460700B1/en not_active Expired - Lifetime
- 1991-06-07 DE DE1991628982 patent/DE69128982T2/en not_active Expired - Fee Related
- 1991-06-07 EP EP19910109363 patent/EP0460701B1/en not_active Expired - Lifetime
- 1991-06-07 DE DE1991625651 patent/DE69125651T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0460701A1 (en) | 1991-12-11 |
EP0460700A1 (en) | 1991-12-11 |
DE69125651D1 (en) | 1997-05-22 |
DE69128982T2 (en) | 1998-08-27 |
DE69125651T2 (en) | 1997-09-04 |
EP0460700B1 (en) | 1997-04-16 |
DE69128982D1 (en) | 1998-04-09 |
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