GB421014A - Improvements in and relating to the cementation of iron, steel and alloys thereof - Google Patents

Improvements in and relating to the cementation of iron, steel and alloys thereof

Info

Publication number
GB421014A
GB421014A GB32808/33A GB3280833A GB421014A GB 421014 A GB421014 A GB 421014A GB 32808/33 A GB32808/33 A GB 32808/33A GB 3280833 A GB3280833 A GB 3280833A GB 421014 A GB421014 A GB 421014A
Authority
GB
United Kingdom
Prior art keywords
cementation
alloys
iron
steel
sodium
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
GB32808/33A
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
Deutsche Gold und Silber Scheideanstalt
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, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB421014A publication Critical patent/GB421014A/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
    • C23C8/44—Carburising
    • C23C8/46—Carburising 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)
  • Carbon And Carbon Compounds (AREA)

Abstract

Melt baths for the cementation of iron, steel or alloys thereof are prepared by fusing together alkaline earth carbides and inert salts such as common salt, potassium chloride or mixtures of the same in the presence of alkaline-reacting agents such as caustic soda, sodium carbonate or sodium oxide. The temperature of the baths used for the cementation varies between 700 and 1050 DEG C. In an example the bath consists of 10 kgms. of potassium chloride, 10 of sodium, carbonate and 1,1 of calcium carbide.
GB32808/33A 1932-11-26 1933-11-23 Improvements in and relating to the cementation of iron, steel and alloys thereof Expired GB421014A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE421014X 1932-11-26

Publications (1)

Publication Number Publication Date
GB421014A true GB421014A (en) 1934-12-12

Family

ID=6455258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32808/33A Expired GB421014A (en) 1932-11-26 1933-11-23 Improvements in and relating to the cementation of iron, steel and alloys thereof

Country Status (1)

Country Link
GB (1) GB421014A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050661A1 (en) * 1998-08-12 2000-08-31 Swagelok Company Low temperature case hardening processes
US6547888B1 (en) 2000-01-28 2003-04-15 Swagelok Company Modified low temperature case hardening processes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050661A1 (en) * 1998-08-12 2000-08-31 Swagelok Company Low temperature case hardening processes
JP2003517516A (en) * 1998-08-12 2003-05-27 スウエイジロク・カンパニー Low temperature case-burning process
US6547888B1 (en) 2000-01-28 2003-04-15 Swagelok Company Modified low temperature case hardening processes

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