GB1327567A - Corrosion-resistant aluminium surfaces - Google Patents
Corrosion-resistant aluminium surfacesInfo
- Publication number
- GB1327567A GB1327567A GB1183872A GB1183872A GB1327567A GB 1327567 A GB1327567 A GB 1327567A GB 1183872 A GB1183872 A GB 1183872A GB 1183872 A GB1183872 A GB 1183872A GB 1327567 A GB1327567 A GB 1327567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- rinse
- treat
- parts
- acid
- 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
Links
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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/56—Treatment of aluminium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
1327567 Treating Al surfaces M N MAROSI 14 March 1972 [14 July 1971] 11838/72 Heading C7U Corrosion-resistance of Al is improved by treatment with an aqueous solution comprising (1) sulphanic acid, (2) a carboxylic acid containing 3 or more carboxyl groups, (3) a K salt of a halogen-containing acid, and (4) an anionic detergent. A composition for the above contains 10-60 wt. per cent of (1), 10-60 wt. per cent of (2), 2-30% of (3) and 0À5-15% of (4), and is used in aqueous solution. Typically, (2) is citric acid, (3) is KHF 2 , and (4) is Na alkyl aryl sulphonate, and a typical treatment procedure is (a) cleanse in solution of non-ionic detergent, (b) treat with NaOH, e. g. 2-20% solution at ambient temperature to 135‹F. for 1-6 minutes, (c) rinse, (d) treat for 2-10 min. in a 2-20% solution of 1-3À5 wt. parts Na 2 Cr 2 O 7 , 2-6 parts NaHF 2 and 10-20 parts H 2 SO 4 (e) rinse (f) treat in the above solution, e.g. at 3-25% concentration, pH 5-6À8, for 5-30 min, and (g) rinse. Optionally the treated plate is dipped in resin solution at pH 9 for 2-3 min. and baked at 250‹-350‹F. for about 10 min.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16265871A | 1971-07-14 | 1971-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1327567A true GB1327567A (en) | 1973-08-22 |
Family
ID=22586578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1183872A Expired GB1327567A (en) | 1971-07-14 | 1972-03-14 | Corrosion-resistant aluminium surfaces |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE782061A (en) |
CA (1) | CA972263A (en) |
DE (1) | DE2230618A1 (en) |
FR (1) | FR2145459A1 (en) |
GB (1) | GB1327567A (en) |
IT (1) | IT948365B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013226533A1 (en) * | 2013-12-18 | 2015-06-18 | MAHLE Behr GmbH & Co. KG | Cleaner for an aluminum component and a process for cleaning aluminum components |
-
1972
- 1972-01-28 IT IT4801872A patent/IT948365B/en active
- 1972-03-14 GB GB1183872A patent/GB1327567A/en not_active Expired
- 1972-04-11 FR FR7212672A patent/FR2145459A1/fr not_active Withdrawn
- 1972-04-13 BE BE782061A patent/BE782061A/en unknown
- 1972-04-19 CA CA140,037A patent/CA972263A/en not_active Expired
- 1972-06-22 DE DE19722230618 patent/DE2230618A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013226533A1 (en) * | 2013-12-18 | 2015-06-18 | MAHLE Behr GmbH & Co. KG | Cleaner for an aluminum component and a process for cleaning aluminum components |
Also Published As
Publication number | Publication date |
---|---|
CA972263A (en) | 1975-08-05 |
BE782061A (en) | 1972-07-31 |
IT948365B (en) | 1973-05-30 |
DE2230618A1 (en) | 1973-01-25 |
FR2145459A1 (en) | 1973-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |