GB950572A - A method of producing chromium diffusion zones - Google Patents

A method of producing chromium diffusion zones

Info

Publication number
GB950572A
GB950572A GB1826862A GB1826862A GB950572A GB 950572 A GB950572 A GB 950572A GB 1826862 A GB1826862 A GB 1826862A GB 1826862 A GB1826862 A GB 1826862A GB 950572 A GB950572 A GB 950572A
Authority
GB
United Kingdom
Prior art keywords
chromium diffusion
diffusion zones
chromium
producing chromium
particle size
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
GB1826862A
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.)
Deutsche Edelstahlwerke AG
Howe Sound Co
Original Assignee
Deutsche Edelstahlwerke AG
Howe Sound Co
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 Deutsche Edelstahlwerke AG, Howe Sound Co filed Critical Deutsche Edelstahlwerke AG
Publication of GB950572A publication Critical patent/GB950572A/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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • C23C10/40—Chromising of ferrous surfaces
    • C23C10/42—Chromising of ferrous surfaces in the presence of volatile transport additives, e.g. halogenated substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Chemically Coating (AREA)

Abstract

In a chromium diffusion process of chromizing steel or nickel alloys so that the surface roughness is less than 0.0025 mm. the parts are packed in a powder mixture comprising chromium of a particle size of under 0.005 mm., an inactive oxide such as alumina of a particle size preferably of 0.1-0.05 mm., and less than 0.01% of a halide such as ammonium chloride, and heating to above 1000 DEG C. The chromium content of the mixture should preferably be 20%.
GB1826862A 1961-05-12 1962-05-11 A method of producing chromium diffusion zones Expired GB950572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED36059A DE1208596B (en) 1961-05-12 1961-05-12 Process for creating chrome diffusion zones with extremely low surface roughness

Publications (1)

Publication Number Publication Date
GB950572A true GB950572A (en) 1964-02-26

Family

ID=7042930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1826862A Expired GB950572A (en) 1961-05-12 1962-05-11 A method of producing chromium diffusion zones

Country Status (6)

Country Link
BE (1) BE616986A (en)
CH (1) CH413543A (en)
DE (1) DE1208596B (en)
GB (1) GB950572A (en)
NL (2) NL135813C (en)
SE (1) SE304661B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005106064A1 (en) * 2004-04-28 2005-11-10 Diffusion Alloys Limited Coatings for turbine blades

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526814A (en) * 1982-11-19 1985-07-02 Turbine Components Corporation Methods of forming a protective diffusion layer on nickel, cobalt, and iron base alloys

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE880086C (en) * 1942-04-25 1953-06-18 Eisen & Stahlind Ag Process for the production of diffusion coatings on metal objects, in particular objects made of iron or steel and device for carrying out the process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005106064A1 (en) * 2004-04-28 2005-11-10 Diffusion Alloys Limited Coatings for turbine blades
US7824738B2 (en) 2004-04-28 2010-11-02 Diffusion Alloys Limited Coatings for turbine blades

Also Published As

Publication number Publication date
DE1208596B (en) 1966-01-05
SE304661B (en) 1968-09-30
CH413543A (en) 1966-05-15
NL278001A (en)
BE616986A (en) 1962-08-16
NL135813C (en)

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