GB290214A - Improvements in hardening metal articles by nitrogenisation - Google Patents

Improvements in hardening metal articles by nitrogenisation

Info

Publication number
GB290214A
GB290214A GB6810/28A GB681028A GB290214A GB 290214 A GB290214 A GB 290214A GB 6810/28 A GB6810/28 A GB 6810/28A GB 681028 A GB681028 A GB 681028A GB 290214 A GB290214 A GB 290214A
Authority
GB
United Kingdom
Prior art keywords
duval
alloy
parts
nitrogenisation
metal articles
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
GB6810/28A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB290214A publication Critical patent/GB290214A/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
    • C23C8/04—Treatment of selected surface areas, e.g. using masks

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

290,214. Aubert, P. F. M., Duval, A. J. P., and Duval, H. A. M., (trading as Aubert et Duval FrÞres), (Assignees of Krupp Akt.-Ges., F.). May 10, 1927, [Convention date]. Cementation.-In a process for hardening metal articles by nitrogenization, the parts of the articles not to be treated are provided with a coating of a metal, other than nickel, e.g. tin, or an alloy, other than a nickel alloy, e.g. a tin alloy. The coated parts may also be provided with a coating of water glass and powdered aluminium. Before nitrogenization, the whole article or the turned parts may be dipped in a bath of nitrate of potassium or sodium heated to about 400‹ C. Specification 174,580 is referred to.
GB6810/28A 1927-05-10 1928-03-05 Improvements in hardening metal articles by nitrogenisation Expired GB290214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE290214X 1927-05-10

Publications (1)

Publication Number Publication Date
GB290214A true GB290214A (en) 1929-02-07

Family

ID=6060997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6810/28A Expired GB290214A (en) 1927-05-10 1928-03-05 Improvements in hardening metal articles by nitrogenisation

Country Status (1)

Country Link
GB (1) GB290214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742505C (en) * 1941-01-24 1943-12-04 Vormals Skodawerke Ag Process and covering material for the local protection of metal surfaces to be nitrided

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742505C (en) * 1941-01-24 1943-12-04 Vormals Skodawerke Ag Process and covering material for the local protection of metal surfaces to be nitrided

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