GB1499711A - Nitriding - Google Patents

Nitriding

Info

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
Application number
GB91976A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GKN Group Services Ltd
Original Assignee
GKN Group Services Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GKN Group Services Ltd filed Critical GKN Group Services Ltd
Priority to GB91976A priority Critical patent/GB1499711A/en
Publication of GB1499711A publication Critical patent/GB1499711A/en
Expired legal-status Critical Current

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.
GB91976A 1976-12-10 1976-12-10 Nitriding Expired GB1499711A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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