GB1020534A - Improvements in the production of a wear-resistant surface on ferrous metal parts - Google Patents

Improvements in the production of a wear-resistant surface on ferrous metal parts

Info

Publication number
GB1020534A
GB1020534A GB3071163A GB3071163A GB1020534A GB 1020534 A GB1020534 A GB 1020534A GB 3071163 A GB3071163 A GB 3071163A GB 3071163 A GB3071163 A GB 3071163A GB 1020534 A GB1020534 A GB 1020534A
Authority
GB
United Kingdom
Prior art keywords
calculated
production
sulphur
ferrous metal
metal parts
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
GB3071163A
Inventor
James Clifford Gregory
Robert Leslie Hewson
Frederick David Waterfall
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3071163A priority Critical patent/GB1020534A/en
Priority to NL6408703A priority patent/NL6408703A/xx
Priority to BE651194D priority patent/BE651194A/xx
Priority to FR983902A priority patent/FR1408988A/en
Priority to CH1008564A priority patent/CH458875A/en
Priority to ES0302733A priority patent/ES302733A1/en
Priority to DK383664A priority patent/DK120624B/en
Publication of GB1020534A publication Critical patent/GB1020534A/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
    • 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
    • C23C8/52—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 more than one element being applied in one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

A process for the production on ferrous metal parts of a sulphurized nitrided surface layer comprising heating the parts to above 500 DEG C., preferably 560-580 DEG C. in a fused salt bath containing an alkali metal cyanide, cyanate, chloride and carbonate and active sulphur (i.e. sulphur which shows up in analysis for sulphide) which may be added in the form of a sulphite, sulphide, thiosulphate or thiocyanate of an alkali metal. The proportion by weight of cyanide is 0.5-30% (calculated as NaCN), of cyanate 10-25% (calculated as NaCNO), of chloride 20-50% (calculated as KCl) and of sulphur 0.05-0.4% (calculated as S). Case hardened steel is treated for 5-180 minutes and the bath covered with a floating layer of graphite and is then quenched or cooled in air or town gas.
GB3071163A 1963-08-02 1963-08-02 Improvements in the production of a wear-resistant surface on ferrous metal parts Expired GB1020534A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB3071163A GB1020534A (en) 1963-08-02 1963-08-02 Improvements in the production of a wear-resistant surface on ferrous metal parts
NL6408703A NL6408703A (en) 1963-08-02 1964-07-30
BE651194D BE651194A (en) 1963-08-02 1964-07-30
FR983902A FR1408988A (en) 1963-08-02 1964-07-31 Process for producing, on ferrous metal parts, a surface layer exhibiting high resistance to wear and seizing
CH1008564A CH458875A (en) 1963-08-02 1964-07-31 Process for the production of wear-resistant surfaces on parts made of ferrous metal
ES0302733A ES302733A1 (en) 1963-08-02 1964-08-01 Improvements in the production of a wear-resistant surface on ferrous metal parts
DK383664A DK120624B (en) 1963-08-02 1964-08-03 Method for producing a durable surface on ferrous metal parts.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3071163A GB1020534A (en) 1963-08-02 1963-08-02 Improvements in the production of a wear-resistant surface on ferrous metal parts

Publications (1)

Publication Number Publication Date
GB1020534A true GB1020534A (en) 1966-02-23

Family

ID=10311943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3071163A Expired GB1020534A (en) 1963-08-02 1963-08-02 Improvements in the production of a wear-resistant surface on ferrous metal parts

Country Status (5)

Country Link
BE (1) BE651194A (en)
DK (1) DK120624B (en)
ES (1) ES302733A1 (en)
GB (1) GB1020534A (en)
NL (1) NL6408703A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155961A (en) * 1984-03-20 1985-10-02 Stephanois Rech Mec Process for improving the corrosion resistance of ferrous metal parts
US5518605A (en) * 1993-08-06 1996-05-21 Centre Stephanois De Recherches Mecaniques Hydromecanique Et Frottement Method of nitriding ferrous metal parts having improved corrosion resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155961A (en) * 1984-03-20 1985-10-02 Stephanois Rech Mec Process for improving the corrosion resistance of ferrous metal parts
US5518605A (en) * 1993-08-06 1996-05-21 Centre Stephanois De Recherches Mecaniques Hydromecanique Et Frottement Method of nitriding ferrous metal parts having improved corrosion resistance

Also Published As

Publication number Publication date
DK120624B (en) 1971-06-21
BE651194A (en) 1965-02-01
NL6408703A (en) 1965-02-03
ES302733A1 (en) 1965-02-16

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