GB395337A - Improvements in processes for hardening iron, steel, and cast iron, alloys by nitrogenising - Google Patents

Improvements in processes for hardening iron, steel, and cast iron, alloys by nitrogenising

Info

Publication number
GB395337A
GB395337A GB28227/31A GB2822731A GB395337A GB 395337 A GB395337 A GB 395337A GB 28227/31 A GB28227/31 A GB 28227/31A GB 2822731 A GB2822731 A GB 2822731A GB 395337 A GB395337 A GB 395337A
Authority
GB
United Kingdom
Prior art keywords
iron
steel
alloys
nitrogenising
processes
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
GB28227/31A
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.)
Krupp Stahl AG
Fried Krupp AG
Original Assignee
Krupp Stahl AG
Fried Krupp AG
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 Krupp Stahl AG, Fried Krupp AG filed Critical Krupp Stahl AG
Publication of GB395337A publication Critical patent/GB395337A/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
    • C23C8/24—Nitriding
    • C23C8/26—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)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

In a process for nitrogenizing iron, steel, and cast iron alloys, the process is carried out in the presence of one or more substances which act as catalyst poisons in the manufacture of ammonia such as sulphur compounds, oxygen, oxygen compounds, water vapour and carbon compounds. In an example, the articles to be treated are sprinkled with a thin layer of cobalt oxide and then nitrogenized in the usual manner. Specification 366,838 is referred to.
GB28227/31A 1930-11-01 1931-10-10 Improvements in processes for hardening iron, steel, and cast iron, alloys by nitrogenising Expired GB395337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE395337X 1930-11-01

Publications (1)

Publication Number Publication Date
GB395337A true GB395337A (en) 1933-07-13

Family

ID=6396837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28227/31A Expired GB395337A (en) 1930-11-01 1931-10-10 Improvements in processes for hardening iron, steel, and cast iron, alloys by nitrogenising

Country Status (1)

Country Link
GB (1) GB395337A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229814B (en) * 1957-06-22 1966-12-01 Thyssen Huette Ag Process for nitriding stainless chromium and chromium-nickel steels
FR2098281A1 (en) * 1970-07-09 1972-03-10 Utilaje Si Piese Fab
FR2099491A1 (en) * 1970-07-21 1972-03-17 Nissan Motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229814B (en) * 1957-06-22 1966-12-01 Thyssen Huette Ag Process for nitriding stainless chromium and chromium-nickel steels
FR2098281A1 (en) * 1970-07-09 1972-03-10 Utilaje Si Piese Fab
FR2099491A1 (en) * 1970-07-21 1972-03-17 Nissan Motor

Similar Documents

Publication Publication Date Title
ES377176A1 (en) Heat treatment for alloys particularly steels to be used in sour well service
GB395337A (en) Improvements in processes for hardening iron, steel, and cast iron, alloys by nitrogenising
GB335632A (en) Improvements in or relating to the treatment of mixtures containing carbon dioxide and hydrogen for the purpose of reducing or eliminating hydrogen content, and to the formation of carbon monoxide therefrom
GB171976A (en) A method of treating pyrophoric materials for the purpose of reducing or eliminating their pyrophoric character
GB344893A (en) Improvements relating to steel
AT162161B (en) Process for improving the hardness and wear resistance of sintered metal bodies.
US1970141A (en) Process for hardening iron, steel, and cast iron alloys by nitriding
GB341113A (en) Improvements in the manufacture of articles hardened in their marginal layers by nitrogenization
DE600903C (en) Process for preparing carbide for azotation
GB234434A (en) Process for the decarbonisation of cast iron or of other metals
GB218992A (en) A process for the production of catalysts for the synthesis of ammonia
GB277631A (en) Process for the manufacture of wheel rims, rails and other parts subject to heavy wear
GB394378A (en) Improvements relating to alloys containing nickel and to methods of producing them
Naito ON THE DECARBURIZATION OF WHITE CAST IRON.
GB471046A (en) Production of steel articles that do not undergo any quenching treatment
GB380882A (en) Improvements in or relating to hardening alloy steels
GB274016A (en) Improvements in treating low carbon-steel and iron
GB174580A (en) Improvements in a process for hardening steel alloys
GB356145A (en) Process of extracting the impurities from quartz, silicates and particularly from clay
GB305105A (en) Improved manufacture of steel
GB216927A (en) Improved body finish for motor cars
GB415086A (en) Improvements in or relating to methods of making heat treated white cast iron and the improved iron produced thereby
GB794806A (en) Improvements in or relating to the surface treatment of clutch discs
GB341876A (en) Process for the production of chromium alloys which are stable on heating
GB228099A (en)