ATA665875A - ENVIRONMENTALLY FRIENDLY PROCESS FOR NITRATING IRON AND STEEL IN SALTBEDS - Google Patents

ENVIRONMENTALLY FRIENDLY PROCESS FOR NITRATING IRON AND STEEL IN SALTBEDS

Info

Publication number
ATA665875A
ATA665875A AT665875A AT665875A ATA665875A AT A665875 A ATA665875 A AT A665875A AT 665875 A AT665875 A AT 665875A AT 665875 A AT665875 A AT 665875A AT A665875 A ATA665875 A AT A665875A
Authority
AT
Austria
Prior art keywords
saltbeds
nitrating
iron
steel
environmentally friendly
Prior art date
Application number
AT665875A
Other languages
German (de)
Other versions
AT349046B (en
Original Assignee
Degussa
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 filed Critical Degussa
Publication of ATA665875A publication Critical patent/ATA665875A/en
Application granted granted Critical
Publication of AT349046B publication Critical patent/AT349046B/en

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)
AT665875A 1974-08-29 1975-08-28 ENVIRONMENTALLY FRIENDLY PROCESS FOR NITRATING IRON AND STEEL IN SALTBEDS AT349046B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2441310A DE2441310C3 (en) 1974-08-29 1974-08-29 Process for nitriding iron and steel in salt baths

Publications (2)

Publication Number Publication Date
ATA665875A true ATA665875A (en) 1978-08-15
AT349046B AT349046B (en) 1979-03-12

Family

ID=5924348

Family Applications (1)

Application Number Title Priority Date Filing Date
AT665875A AT349046B (en) 1974-08-29 1975-08-28 ENVIRONMENTALLY FRIENDLY PROCESS FOR NITRATING IRON AND STEEL IN SALTBEDS

Country Status (14)

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

Families Citing this family (6)

* 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 (en) * 1987-09-14 1989-04-11 Alcoa Aluminio Do Nordeste S A PROCESS FOR THERMAL TREATMENT OF METALLIC ALLOYS
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 (en) * 1993-07-23 1994-06-16 Degussa Prodn of salt mixture for hardening of steel parts - by pressing together potassium cyanate, potassium carbonate and sodium carbonate.
FR2972459B1 (en) 2011-03-11 2013-04-12 Hydromecanique & Frottement FOUNDED SALT BATHS FOR NITRIDING STEEL MECHANICAL PARTS, AND METHOD FOR IMPLEMENTING THE SAME

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU805954A3 (en) * 1973-03-05 1981-02-15 Дегусса (Фирма) Method of regenerating carbonate-containing salt melts for nitriding and/or carburization of metallic articles
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

Also Published As

Publication number Publication date
IN145225B (en) 1978-09-09
IT1041591B (en) 1980-01-10
CA1058064A (en) 1979-07-10
FR2283243A1 (en) 1976-03-26
JPS5150241A (en) 1976-05-01
DE2441310A1 (en) 1976-03-11
ZA755450B (en) 1976-07-28
AR201799A1 (en) 1975-04-15
ES440319A1 (en) 1977-03-16
CH616455A5 (en) 1980-03-31
BR7505152A (en) 1976-08-03
DE2441310C3 (en) 1978-05-18
AT349046B (en) 1979-03-12
FR2283243B1 (en) 1978-04-07
GB1507904A (en) 1978-04-19
DE2441310B2 (en) 1977-09-22
SE7509535L (en) 1976-03-01

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Legal Events

Date Code Title Description
ELA Expired due to lapse of time