GB877981A - Nitriding process - Google Patents

Nitriding process

Info

Publication number
GB877981A
GB877981A GB1359/60A GB135960A GB877981A GB 877981 A GB877981 A GB 877981A GB 1359/60 A GB1359/60 A GB 1359/60A GB 135960 A GB135960 A GB 135960A GB 877981 A GB877981 A GB 877981A
Authority
GB
United Kingdom
Prior art keywords
heating
immersed
liquid
nitrogen
compound
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
GB1359/60A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Publication of GB877981A publication Critical patent/GB877981A/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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
    • C23C8/48—Nitriding
    • C23C8/50—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

A process for nitriding metals comprises heating the metal while it is immersed in a watery solution of a nitrogen compound. The compound may be ammonia and the solution may also include an organic compound containing carbon or carbon and nitrogen. Heating may be by electrical resistance or induction and in the latter case the induction coil may also be immersed in the liquid. The liquid may also be sprayed on to the metal during heating.
GB1359/60A 1959-01-14 1960-01-14 Nitriding process Expired GB877981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE877981X 1959-01-14

Publications (1)

Publication Number Publication Date
GB877981A true GB877981A (en) 1961-09-20

Family

ID=6818321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1359/60A Expired GB877981A (en) 1959-01-14 1960-01-14 Nitriding process

Country Status (1)

Country Link
GB (1) GB877981A (en)

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