GB1499711A - Nitriding - Google Patents
NitridingInfo
- Publication number
- GB1499711A GB1499711A GB91976A GB91976A GB1499711A GB 1499711 A GB1499711 A GB 1499711A GB 91976 A GB91976 A GB 91976A GB 91976 A GB91976 A GB 91976A GB 1499711 A GB1499711 A GB 1499711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitriding
- carbo
- nitride layer
- nitride
- layer
- 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
- C23C8/06—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 gases
- C23C8/28—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 gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding 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
- C23C8/06—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 gases
- C23C8/08—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 gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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
1499711 Carbo-nitriding steel GKN GROUP SERVICES Ltd 10 Dec 1976 [10 Jan 1976] 00919/76 Heading C7U A ferrous metal is nitrided in dissociated ammonia so that a "white layer" of iron nitride is formed, and is then subjected to a carbo-nitriding atmosphere whereby the nitride layer is converted to epsilon-carbonitride. Preferably nitriding is carried out at 480-560‹C and carbo-nitriding at 500-600‹C; the product may have a carbo-nitride layer of hexagonal Fe3N containing 2-3% carbon.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB91976A GB1499711A (en) | 1976-12-10 | 1976-12-10 | Nitriding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB91976A GB1499711A (en) | 1976-12-10 | 1976-12-10 | Nitriding |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1499711A true GB1499711A (en) | 1978-02-01 |
Family
ID=9712823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB91976A Expired GB1499711A (en) | 1976-12-10 | 1976-12-10 | Nitriding |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1499711A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2261679A (en) * | 1991-11-25 | 1993-05-26 | Nippon Piston Ring Co Ltd | Producing piston rings by nitriding in two successive steps |
WO2000015862A1 (en) * | 1998-09-11 | 2000-03-23 | Aga Aktiebolag (Publ) | A method and a device for the treatment of a tool, and a medium |
EP2028255A1 (en) * | 2007-08-02 | 2009-02-25 | Petroleo Brasileiro S.A. Petrobras | Process for obtaining an inter-metallic compound and use thereof in lubricating oils |
-
1976
- 1976-12-10 GB GB91976A patent/GB1499711A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2261679A (en) * | 1991-11-25 | 1993-05-26 | Nippon Piston Ring Co Ltd | Producing piston rings by nitriding in two successive steps |
GB2261679B (en) * | 1991-11-25 | 1995-05-31 | Nippon Piston Ring Co Ltd | Method of producing piston ring |
US5433001A (en) * | 1991-11-25 | 1995-07-18 | Nippon Piston Ring Co., Ltd. | Method of producing piston ring |
WO2000015862A1 (en) * | 1998-09-11 | 2000-03-23 | Aga Aktiebolag (Publ) | A method and a device for the treatment of a tool, and a medium |
EP2028255A1 (en) * | 2007-08-02 | 2009-02-25 | Petroleo Brasileiro S.A. Petrobras | Process for obtaining an inter-metallic compound and use thereof in lubricating oils |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |