GB933200A - Process for the diffusion of one metal into another metal - Google Patents
Process for the diffusion of one metal into another metalInfo
- Publication number
- GB933200A GB933200A GB1245862A GB1245862A GB933200A GB 933200 A GB933200 A GB 933200A GB 1245862 A GB1245862 A GB 1245862A GB 1245862 A GB1245862 A GB 1245862A GB 933200 A GB933200 A GB 933200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- enclosure
- vapours
- ingress
- hours
- 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
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
Abstract
933,200. Coating with metals. ROLLSROYCE Ltd. March 30, 1962, No. 12458/62. Class 82. A process for diffusing a metal, such as A1, Cd, Sn, Pb or Zn, into the surface of another, such as nickel base alloys or brass, comprises placing the article to be coated in a sealed enclosure with at least part of its surface in contact with a powder mixture of 0.5-30% of the first metal and 99.5-70% of calcined alumina, heating the enclosure to a temperature above the melting point of the first metal, e.g. > 1150‹ or 980-1050‹ C., for a period of 1-24 hours, preferably 8-12 hours, the enclosure being provided with means which allow gases and vapours to escape during heating but prevent their ingress. The enclosure may be sealed by welding on a cover 14 (Fig. 1) or by bolting a cover 21 on to flanges 24, the projection 27 projecting into the recess 26 which is filled with chromous oxide 28, providing the seal in the case of Fig. 2. The preferred means for allowing gas and vapours to escape during heating but to prevent their ingress is the non-return valve shown in the Figures. The valve 17 may be set by means of screw 19 to open at a pressure within the range 5-20 lbs./sq. inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1245862A GB933200A (en) | 1962-03-30 | 1962-03-30 | Process for the diffusion of one metal into another metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1245862A GB933200A (en) | 1962-03-30 | 1962-03-30 | Process for the diffusion of one metal into another metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB933200A true GB933200A (en) | 1963-08-08 |
Family
ID=10004986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1245862A Expired GB933200A (en) | 1962-03-30 | 1962-03-30 | Process for the diffusion of one metal into another metal |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB933200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0453154A2 (en) * | 1990-04-17 | 1991-10-23 | ROLLS-ROYCE plc | Pack plating process |
-
1962
- 1962-03-30 GB GB1245862A patent/GB933200A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0453154A2 (en) * | 1990-04-17 | 1991-10-23 | ROLLS-ROYCE plc | Pack plating process |
| EP0453154A3 (en) * | 1990-04-17 | 1992-05-06 | Rolls-Royce Plc | Pack plating process |
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