GB1507904A - Process for nitriding iron and steel in a salt bath - Google Patents

Process for nitriding iron and steel in a salt bath

Info

Publication number
GB1507904A
GB1507904A GB35127/75A GB3512775A GB1507904A GB 1507904 A GB1507904 A GB 1507904A GB 35127/75 A GB35127/75 A GB 35127/75A GB 3512775 A GB3512775 A GB 3512775A GB 1507904 A GB1507904 A GB 1507904A
Authority
GB
United Kingdom
Prior art keywords
salt bath
cyanate
cyanide
weight
calculated
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
GB35127/75A
Other languages
English (en)
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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 Degussa GmbH filed Critical Degussa GmbH
Publication of GB1507904A publication Critical patent/GB1507904A/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)
  • Processing Of Solid Wastes (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
GB35127/75A 1974-08-29 1975-08-26 Process for nitriding iron and steel in a salt bath Expired GB1507904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2441310A DE2441310C3 (de) 1974-08-29 1974-08-29 Verfahren zum Nitrieren von Eisen und Stahl in Salzbädern

Publications (1)

Publication Number Publication Date
GB1507904A true GB1507904A (en) 1978-04-19

Family

ID=5924348

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35127/75A Expired GB1507904A (en) 1974-08-29 1975-08-26 Process for nitriding iron and steel in a salt bath

Country Status (14)

Country Link
JP (1) JPS5150241A (de)
AR (1) AR201799A1 (de)
AT (1) AT349046B (de)
BR (1) BR7505152A (de)
CA (1) CA1058064A (de)
CH (1) CH616455A5 (de)
DE (1) DE2441310C3 (de)
ES (1) ES440319A1 (de)
FR (1) FR2283243A1 (de)
GB (1) GB1507904A (de)
IN (1) IN145225B (de)
IT (1) IT1041591B (de)
SE (1) SE7509535L (de)
ZA (1) ZA755450B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012146839A1 (fr) 2011-03-11 2012-11-01 H.E.F. Bain de sels fondus pour la nitruration de pieces mecaniques en acier, et un procede de mise en oeuvre

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1576143A (en) * 1977-07-20 1980-10-01 Brico Eng Sintered metal articles
BR8705165A (pt) * 1987-09-14 1989-04-11 Alcoa Aluminio Do Nordeste S A Processo para o tratamento termico de ligas metalicas
US4938452A (en) * 1988-12-10 1990-07-03 Aisan Kogyo Kabushiki Kaisha Air control device for internal combustion engine
DE4119820C1 (en) * 1991-06-15 1992-09-03 Goetz Dr. 5400 Koblenz De Baum Treatment of iron@ (alloys) on same support - comprises nitriding in molten alkali metal cyanate and quenching in hot aq. salt bath
DE4324740C1 (de) * 1993-07-23 1994-06-16 Degussa Verfahren zur Herstellung eines Härtesalzes in stückiger Form

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU805954A3 (ru) * 1973-03-05 1981-02-15 Дегусса (Фирма) Способ регенерации карбонатсодержащихСОлЕВыХ РАСплАВОВ дл НиТРиРОВАНи и/или НАуглЕРОжиВАНи МЕТАлличЕСКиХиздЕлий
FR2234380A1 (en) * 1973-06-20 1975-01-17 Stephanois Rech Mecanique Cent Regenerating cyanate-carbonate molten salt baths - by adding amide pretreated to liberate ammonia

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012146839A1 (fr) 2011-03-11 2012-11-01 H.E.F. Bain de sels fondus pour la nitruration de pieces mecaniques en acier, et un procede de mise en oeuvre
US9611534B2 (en) 2011-03-11 2017-04-04 H.E.F. Molten-salt bath for nitriding mechanical parts made of steel, and implementation method

Also Published As

Publication number Publication date
BR7505152A (pt) 1976-08-03
SE7509535L (sv) 1976-03-01
FR2283243B1 (de) 1978-04-07
AT349046B (de) 1979-03-12
ES440319A1 (es) 1977-03-16
ZA755450B (en) 1976-07-28
DE2441310A1 (de) 1976-03-11
DE2441310C3 (de) 1978-05-18
FR2283243A1 (fr) 1976-03-26
JPS5150241A (en) 1976-05-01
AR201799A1 (es) 1975-04-15
ATA665875A (de) 1978-08-15
DE2441310B2 (de) 1977-09-22
IT1041591B (it) 1980-01-10
IN145225B (de) 1978-09-09
CH616455A5 (en) 1980-03-31
CA1058064A (en) 1979-07-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19950825