GB510036A - Improvements in the of surface layers of high chromium content on articles made fromiron alloys - Google Patents
Improvements in the of surface layers of high chromium content on articles made fromiron alloysInfo
- Publication number
- GB510036A GB510036A GB13629/38A GB1362938A GB510036A GB 510036 A GB510036 A GB 510036A GB 13629/38 A GB13629/38 A GB 13629/38A GB 1362938 A GB1362938 A GB 1362938A GB 510036 A GB510036 A GB 510036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- alloys
- gaseous
- carrier
- per cent
- 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
- C23C10/02—Pretreatment of the material to be coated
Abstract
510,036. Coating with metals. DAEVES, K., and BECKER, G. May 6, 1938, No. 13629. Convention date, May 11, 1937. [Class 82 (ii)] A layer of high chromium content is formed on the surface of alloys containing iron as the predominating constituent and containing more than 0.1 per cent of carbon by first decarbonizing their surfaces, e.g., by treatment with hydrogen at high temperatures, to such an extent that the carbon content at the surface is reduced to less than 0.1 per cent. and then treating with a chromium-carrier in gaseous form at a temperature above 900‹C. The gaseous chromium-carrier, which may be formed by passing gaseous hydrochloric acid over red hot chromium or alloys or compounds of chromium, is preferably caused to flow over the articles. The Specification as open to inspection under Sect. 91 describes also the treatment with a gaseous chromium-carrier of articles made from iron alloys containing less than 0.1 per cent. of carbon. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE510036X | 1937-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB510036A true GB510036A (en) | 1939-07-26 |
Family
ID=6547347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13629/38A Expired GB510036A (en) | 1937-05-11 | 1938-05-06 | Improvements in the of surface layers of high chromium content on articles made fromiron alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB510036A (en) |
-
1938
- 1938-05-06 GB GB13629/38A patent/GB510036A/en not_active Expired
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