GB1023337A - Improvements in or relating to a method of nitriding steel - Google Patents
Improvements in or relating to a method of nitriding steelInfo
- Publication number
- GB1023337A GB1023337A GB2291263A GB2291263A GB1023337A GB 1023337 A GB1023337 A GB 1023337A GB 2291263 A GB2291263 A GB 2291263A GB 2291263 A GB2291263 A GB 2291263A GB 1023337 A GB1023337 A GB 1023337A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- compound
- nitrogen
- film
- relating
- 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
- C23C8/60—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 using solids, e.g. powders, pastes
- C23C8/62—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 using solids, e.g. powders, pastes only one element being applied
- C23C8/68—Boronising
- C23C8/70—Boronising of ferrous surfaces
-
- 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
- C23C8/60—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 using solids, e.g. powders, pastes
- C23C8/62—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 using solids, e.g. powders, pastes only one element being applied
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Low-carbon (0.03-0.15% C) steel is nitrided, e.g. to N contents up to 0.08%, by coating the surface of the steel with a film of a nitrogen-containing compound which decomposes and only releases most of its nitrogen above 600 DEG F., and maintaining the coated steel e.g. in the form of coiled strip or wire or stacked in a nitriding atmosphere at a temperature e.g. between 600 DEG F. and 1300 DEG F. at which the compound is decomposed for a time sufficient to nitride the steel throughout. To minimize denitriding of e.g. coil edges, externally generated ammonia may be introduced into the furnace atmosphere. Suitable nitrogen-containing compounds are guanidine compounds such as cyanoguanidine, guanidine carbonate and chloride; ammonium carbonate or urea are unsuitable for the invention. The film is preferably provided by applying to the steel an aqueous solution of the compound.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20119462A | 1962-06-08 | 1962-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1023337A true GB1023337A (en) | 1966-03-23 |
Family
ID=22744861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2291263A Expired GB1023337A (en) | 1962-06-08 | 1963-06-07 | Improvements in or relating to a method of nitriding steel |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE633361A (en) |
| GB (1) | GB1023337A (en) |
| LU (1) | LU43874A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3839493A1 (en) * | 1988-11-23 | 1990-05-31 | Linde Ag | Process for a nitriding heat treatment of metals |
| US20210172046A1 (en) * | 2019-12-06 | 2021-06-10 | Swagelok Company | Chemical activation of self-passivating metals |
| US11649538B2 (en) | 2018-06-11 | 2023-05-16 | Swagelok Company | Chemical activation of self-passivating metals |
| US11885027B2 (en) | 2020-04-29 | 2024-01-30 | Swagelok Company | Activation of self-passivating metals using reagent coatings for low temperature nitrocarburization |
-
0
- BE BE633361D patent/BE633361A/xx unknown
-
1963
- 1963-06-07 GB GB2291263A patent/GB1023337A/en not_active Expired
- 1963-06-08 LU LU43874D patent/LU43874A1/xx unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3839493A1 (en) * | 1988-11-23 | 1990-05-31 | Linde Ag | Process for a nitriding heat treatment of metals |
| US11649538B2 (en) | 2018-06-11 | 2023-05-16 | Swagelok Company | Chemical activation of self-passivating metals |
| US20210172046A1 (en) * | 2019-12-06 | 2021-06-10 | Swagelok Company | Chemical activation of self-passivating metals |
| US11885027B2 (en) | 2020-04-29 | 2024-01-30 | Swagelok Company | Activation of self-passivating metals using reagent coatings for low temperature nitrocarburization |
Also Published As
| Publication number | Publication date |
|---|---|
| LU43874A1 (en) | 1964-06-08 |
| BE633361A (en) |
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