GB779972A - Improvements relating to the coating of metal articles with aluminium - Google Patents
Improvements relating to the coating of metal articles with aluminiumInfo
- Publication number
- GB779972A GB779972A GB25264/55A GB2526455A GB779972A GB 779972 A GB779972 A GB 779972A GB 25264/55 A GB25264/55 A GB 25264/55A GB 2526455 A GB2526455 A GB 2526455A GB 779972 A GB779972 A GB 779972A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- aluminium
- flux
- coating
- article
- 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
- 239000004411 aluminium Substances 0.000 title abstract 5
- 229910052782 aluminium Inorganic materials 0.000 title abstract 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 5
- 239000011248 coating agent Substances 0.000 title abstract 5
- 238000000576 coating method Methods 0.000 title abstract 5
- 229910052751 metal Inorganic materials 0.000 title abstract 4
- 239000002184 metal Substances 0.000 title abstract 4
- 230000004907 flux Effects 0.000 abstract 6
- 239000000956 alloy Substances 0.000 abstract 4
- 229910045601 alloy Inorganic materials 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000011734 sodium Substances 0.000 abstract 2
- 235000002639 sodium chloride Nutrition 0.000 abstract 2
- 229910052719 titanium Inorganic materials 0.000 abstract 2
- 239000010936 titanium Substances 0.000 abstract 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 229910001610 cryolite Inorganic materials 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 239000004922 lacquer Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 238000010422 painting Methods 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Coating By Spraying Or Casting (AREA)
- Coating With Molten Metal (AREA)
Abstract
779,972. Coating metals. GENERAL MOTORS CORPORATION. Sept. 2, 1955 [Sept. 29, 1954], No. 25264/55. Class 82(2) [Also in Group XXVII] Articles of ferrous metal, titanium or titanium base alloys, nickel base alloys, molybdenum or its alloys, such as nuts and bolts, tubing, wire, woven metal fencing but particularly poppet valves for I.C. engines are coated with alminium by painting or spraying on a coating of aluminium-containing material (which may be molten aluminium) and then heating the article whilst the coating is in contact with a salt flux containing potassium and sodium chlorides, cryolite and aluminium fluoride, so that the aluminium is caused to alloy with the surface. The flux may be mixed with the A1-containing material and the mixture painted or sprayed on to the article which is then heated by e.g. induction of 1275-1400‹F; or, the molten flux may serve as a bath to heat the article already coated with the aluminium-containing material in which case the article may be rapidly rotated or vibrated in the flux or on removal therefrom, whilst preheating to 1000-1100‹F. before immersion is also desirable. As described, a poppet valve 10 is cleaned and if necessary pickled in an aqueous solution of some 2 per cent HF, 7 per cent H 2 SO 4 , 10 per cent HNO, and sand-blasted. A layer 16 comprising molten Al or a paste of approximately 30-50 per cent by volume of Al powder 10- 20 per cent of binder such as lacquer or resin solution and 30-50 per cent of a thinner or solvent such as acetone. is then sprayed or painted on after which the valve - preferably pre-heated to 1000-1100‹F. - is immersed to the line a-a and rapidly rotated or longitudinally reciprocated in a molten flux bath consisting of 37-57 per cent by weight KC1. 25-45 per cent Na C1 8-20 per cent Na 3 A1F 6 and 0.5-12 per cent Al F 3 which is maintained preferably at 1325-1375‹F If the flux is incorporated in the coating paste, heating should be in an inert or reducing atmosphere.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US779972XA | 1954-09-29 | 1954-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB779972A true GB779972A (en) | 1957-07-24 |
Family
ID=22141239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25264/55A Expired GB779972A (en) | 1954-09-29 | 1955-09-02 | Improvements relating to the coating of metal articles with aluminium |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1159570A (en) |
| GB (1) | GB779972A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204911B (en) * | 1957-07-30 | 1965-11-11 | Edward Peter Schreyer | Method and device for the production of heat, corrosion and erosion-resistant protective coatings made of aluminum or an aluminum alloy on metallic objects, in particular engine valves, by immersion in a molten metal bath |
| WO2005035819A1 (en) * | 2003-10-11 | 2005-04-21 | Mtu Aero Engines Gmbh | Method for local alitising, siliconising and chroming of metal components |
| EP1528117A1 (en) * | 2003-10-31 | 2005-05-04 | General Electric Company | Diffusion coating process |
-
1955
- 1955-09-02 GB GB25264/55A patent/GB779972A/en not_active Expired
- 1955-09-28 FR FR1159570D patent/FR1159570A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1204911B (en) * | 1957-07-30 | 1965-11-11 | Edward Peter Schreyer | Method and device for the production of heat, corrosion and erosion-resistant protective coatings made of aluminum or an aluminum alloy on metallic objects, in particular engine valves, by immersion in a molten metal bath |
| WO2005035819A1 (en) * | 2003-10-11 | 2005-04-21 | Mtu Aero Engines Gmbh | Method for local alitising, siliconising and chroming of metal components |
| EP1528117A1 (en) * | 2003-10-31 | 2005-05-04 | General Electric Company | Diffusion coating process |
| US7390534B2 (en) | 2003-10-31 | 2008-06-24 | General Electric Company | Diffusion coating process |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1159570A (en) | 1958-06-30 |
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