GB510871A - Improvements in or relating to the manufacture of iron or steel articles having protective coatings - Google Patents
Improvements in or relating to the manufacture of iron or steel articles having protective coatingsInfo
- Publication number
- GB510871A GB510871A GB23838A GB23838A GB510871A GB 510871 A GB510871 A GB 510871A GB 23838 A GB23838 A GB 23838A GB 23838 A GB23838 A GB 23838A GB 510871 A GB510871 A GB 510871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- coating
- article
- heat treatment
- iron
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/60—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
510,871. Coating with metals. BOLTON, C. A. Jan. 4, 1938, No. 238. [Class 82 (ii)] One or more surfaces of an iron or steel article are coated or impregnated with chromium or an alloy of chromium with one or more non-ferrous metals by passing a salt or salts of the coating or impregnating metal or metals in gaseous form over said surface or surfaces, the latter being then subjected to a consolidation under pressure and to a heat treatment to render the surfaces hard and very resistant to corrosion and to improve their appearance. The coating or impregnation may be carried out as described in Specification 492,521. The consolidation is preferably carried out in the cold, e.g. by cold rolling, the article being then heated to an elevated temperature, e.g. about 600‹C., and then quickly cooled, e.g. by quenching in water or oil. Alternatively the heat treatment and consolidation may be combined by carrying out the latter at an elevated temperature, the article being then quenched immediately after the rolling or the like. The treated surfaces may be polished. The coating or impregnating substance may be, for example, a combination of chromium with one or more of molybdenum, tantalum, vanadium, or nickel, e.g. 80 per cent. chromium with 20 per cent. nickel. The article may be brought to its finished shape, e.g. by stamping or pressing, either before or after the coating, consolidating, and heat treatment. Reference is made to the treatment of articles such as sheets : bars, rods, strips, tubes, bolts, and nuts. The Provisional Specification describes broadly the subjection of iron or steel articles which have been coated or impregnated with one or more non-ferrous metals, such as chromium, nickel, or manganese, to a mechanical after-working and a heat treatment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23838A GB510871A (en) | 1938-01-04 | 1938-01-04 | Improvements in or relating to the manufacture of iron or steel articles having protective coatings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB23838A GB510871A (en) | 1938-01-04 | 1938-01-04 | Improvements in or relating to the manufacture of iron or steel articles having protective coatings |
Publications (1)
Publication Number | Publication Date |
---|---|
GB510871A true GB510871A (en) | 1939-08-04 |
Family
ID=9700842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23838A Expired GB510871A (en) | 1938-01-04 | 1938-01-04 | Improvements in or relating to the manufacture of iron or steel articles having protective coatings |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB510871A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875112A (en) * | 1955-06-13 | 1959-02-24 | Deutsche Edelstahlwerke Ag | Process for improving the physical properties of chromized articles |
-
1938
- 1938-01-04 GB GB23838A patent/GB510871A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2875112A (en) * | 1955-06-13 | 1959-02-24 | Deutsche Edelstahlwerke Ag | Process for improving the physical properties of chromized articles |
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