GB680281A - Methods of improving the corrosion resistance of ferrous articles - Google Patents
Methods of improving the corrosion resistance of ferrous articlesInfo
- Publication number
- GB680281A GB680281A GB4134/49A GB413449A GB680281A GB 680281 A GB680281 A GB 680281A GB 4134/49 A GB4134/49 A GB 4134/49A GB 413449 A GB413449 A GB 413449A GB 680281 A GB680281 A GB 680281A
- Authority
- GB
- United Kingdom
- Prior art keywords
- article
- silicate
- hydrocarbon
- per cent
- vapour
- 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
- C23C22/48—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
- C23C22/50—Treatment of iron or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Treatment Of Metals (AREA)
- Paints Or Removers (AREA)
Abstract
Ferrous articles are coated with a thin adherent film comprising an alkali-metal silicate and then exposed to the vapours of a hydrocarbon-substituted halogenosilane. The silicate coating composition may comprise potassium, sodium or lithium silicates, and 10-90 per cent phosphoric acid and/or 5-40 per cent zinc chromate or chromium oxide, each percentage being expressed by weight based on the alkalimetal silicate, may be included. The hydrocarbon - substituted halogenosilane may be methyl or ethyl chlorosilane, or a mixture thereof, or a mixture with silicon tetrachloride; as described in Specifications 572,740, [Group II], and 575,696, [Group VIII]. The silicate may be applied by dipping the article, which may be at a temperature above 50 DEG C into, or spraying it with, a 3-15 per cent aqueous solution thereof; the article may then be baked at 60-150 DEG C for 10-30 minutes, and exposed to the vapour of the hydrocarbon-substituted halogenosilane; if desired, prior to exposure to such vapour and after baking, the article may be subjected to the action of water vapour. Finally, the article is heated at 60-125 DEG C for 15-180 minutes.ALSO:Ferrous articles are coated with a thin adherent film comprising an alkali-metal silicate and then exposed to the vapours of a hydrocarbon-substituted halogenosilane. The silicate coating composition may comprise potassium, sodium or lithium silicates, and 10-90 per cent phosphoric acid and/or 5-40 per cent zinc chromate or chromium oxide, each percentage being expressed by weight based on the alkalimetal silicate, may be included. The hydrocarbon-substituted halogenosilane may be methyl or ethyl chlorosilane, or a mixture thereof, or a mixture with silicon tetrachloride; as described in Specifications 572,740 and 575,696, [Group VIII]. The silicate may be applied by dipping the article, which may be at a temperature above 50 DEG C into, or spraying it with, a 3-15 per cent aqueous solution thereof; the article may then be baked at 60-150 DEG C for 10-30 minutes, and exposed to the vapour of the hydrocarbon-substituted halogenosilane; if desired, prior to exposure to such vapour and after baking, the article may be subjected to the action of water vapour. Finally, the article is heated at 60-125 DEG C for 15-180 minutes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US680281XA | 1948-02-18 | 1948-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB680281A true GB680281A (en) | 1952-10-01 |
Family
ID=22079971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4134/49A Expired GB680281A (en) | 1948-02-18 | 1949-02-15 | Methods of improving the corrosion resistance of ferrous articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB680281A (en) |
-
1949
- 1949-02-15 GB GB4134/49A patent/GB680281A/en not_active Expired
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