GB228099A - - Google Patents

Info

Publication number
GB228099A
GB228099A GB1446224A GB1446224A GB228099A GB 228099 A GB228099 A GB 228099A GB 1446224 A GB1446224 A GB 1446224A GB 1446224 A GB1446224 A GB 1446224A GB 228099 A GB228099 A GB 228099A
Authority
GB
United Kingdom
Prior art keywords
hydrogen
per cent
iron
cementation
percentages
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
GB1446224A
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.)
GELSENKIRCHENER BERGWERKS AG ABTEILUNG SCHALKE
Original Assignee
GELSENKIRCHENER BERGWERKS AG ABTEILUNG SCHALKE
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 GELSENKIRCHENER BERGWERKS AG ABTEILUNG SCHALKE filed Critical GELSENKIRCHENER BERGWERKS AG ABTEILUNG SCHALKE
Publication of GB228099A publication Critical patent/GB228099A/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
    • C23C8/06—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 gases
    • C23C8/08—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 gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—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)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

228,099. Gelsenkirchener Bergwerks Akt.-Ges. Abteilung Schalke. Jan. 24, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Cementation.-In a process for the carbonization or cementation of iron, iron alloys and other metals by methane or gases rich in methane, the limits of percentages of hydrogen formed, which depend on the temperature and pressure employed and above which the reaction ceases or proceeds inversely, are not exceeded. For example, when treating iron under atmosphere pressure and at 300‹ C. the content of hydrogen should be not more than 1.7 per cent, at 445‹ C. not more than 3.4 per cent, and at 508‹ C. not more than 8 per cent. At higher temperatures the content of hydrogen increases with the temperature. Under reduced pressure, the percentages of hydrogen are increased.
GB1446224A 1924-01-24 1924-06-14 Expired GB228099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG60567D DE398209C (en) 1924-01-24 1924-01-24 Process for carbonizing iron using methane or methane-rich gases

Publications (1)

Publication Number Publication Date
GB228099A true GB228099A (en) 1925-06-11

Family

ID=7132497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1446224A Expired GB228099A (en) 1924-01-24 1924-06-14

Country Status (3)

Country Link
DE (1) DE398209C (en)
FR (1) FR580177A (en)
GB (1) GB228099A (en)

Also Published As

Publication number Publication date
DE398209C (en) 1924-07-02
FR580177A (en) 1924-10-31

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