GB315394A - Improvements in the manufacture of articles hardened by nitrogenisation - Google Patents
Improvements in the manufacture of articles hardened by nitrogenisationInfo
- Publication number
- GB315394A GB315394A GB16446/29A GB1644629A GB315394A GB 315394 A GB315394 A GB 315394A GB 16446/29 A GB16446/29 A GB 16446/29A GB 1644629 A GB1644629 A GB 1644629A GB 315394 A GB315394 A GB 315394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- molybdenum
- subjected
- temperature
- alloy
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Earth Drilling (AREA)
Abstract
315,394. Molybdenum Corporation of America, (Assignees of Phillips, W. H.). July 13, 1928, [Convention date]. Right to Patent relinquished. Case-hardening. - A ferrous base article is formed from an alloy containing molybdenum and is then subjected to the action of nitrogen at an elevated temperature, the molybdenum in the alloy accelerating the formation of a nitrogenized coating on the article. In an example an alloy steel containing 2.2 per cent of aluminium, 0.29 per cent of carbon, 0.55 per cent of manganese, 0.89 per cent of molybdenum, 0.18 per cent of silicon, and below 0.04 per cent of phosphorus and sulphur respectively was subjected to the action of ammonia in a closed chamber at a temperature of about 540‹ C. for about 10 hours. In another example a cast iron alloy containing 3.5 per cent of carbon and 0.60 per cent of molybdenum was subjected to a nitrogen at a temperature of 540‹ C. for 20 hours. If desired temperatures up to 700‹ C. may be used. Reference has been directed by the Comptroller to Specifications 243,613, 272,182, [Class 82 (i), Metals, Extracting &c.], 287,156 (as open to inspection under Sect. 91 (3) (a)), and 311,588.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US315394XA | 1928-07-13 | 1928-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB315394A true GB315394A (en) | 1930-07-24 |
Family
ID=21860019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16446/29A Expired GB315394A (en) | 1928-07-13 | 1929-05-28 | Improvements in the manufacture of articles hardened by nitrogenisation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB315394A (en) |
-
1929
- 1929-05-28 GB GB16446/29A patent/GB315394A/en not_active Expired
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