FR2170971A1 - Corrosion resistant steel - by heating in moist atmosphere of nitrogen and hydrogen - Google Patents

Corrosion resistant steel - by heating in moist atmosphere of nitrogen and hydrogen

Info

Publication number
FR2170971A1
FR2170971A1 FR7204448A FR7204448A FR2170971A1 FR 2170971 A1 FR2170971 A1 FR 2170971A1 FR 7204448 A FR7204448 A FR 7204448A FR 7204448 A FR7204448 A FR 7204448A FR 2170971 A1 FR2170971 A1 FR 2170971A1
Authority
FR
France
Prior art keywords
heating
nitrogen
hydrogen
corrosion resistant
resistant steel
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.)
Granted
Application number
FR7204448A
Other languages
French (fr)
Other versions
FR2170971B1 (en
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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
Priority to BE794528D priority Critical patent/BE794528A/en
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR7204448A priority patent/FR2170971A1/en
Priority to DE19732305996 priority patent/DE2305996A1/en
Priority to LU66991D priority patent/LU66991A1/xx
Priority to IT4730973A priority patent/IT984363B/en
Priority to JP1701673A priority patent/JPS4984931A/ja
Publication of FR2170971A1 publication Critical patent/FR2170971A1/en
Application granted granted Critical
Publication of FR2170971B1 publication Critical patent/FR2170971B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
    • C21D3/02—Extraction of non-metals
    • C21D3/04—Decarburising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

Steel with a C content >0.05% is protected against corrosion by heating the steel at 650-850 degrees C in a moist mixt. of N2 and H. The thermal treatment is pref. followed by treatment in a phosphate bath.
FR7204448A 1972-02-10 1972-02-10 Corrosion resistant steel - by heating in moist atmosphere of nitrogen and hydrogen Granted FR2170971A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE794528D BE794528A (en) 1972-02-10 PROCESS FOR PROTECTING STEELS AGAINST CORROSION
FR7204448A FR2170971A1 (en) 1972-02-10 1972-02-10 Corrosion resistant steel - by heating in moist atmosphere of nitrogen and hydrogen
DE19732305996 DE2305996A1 (en) 1972-02-10 1973-02-07 PROCESS FOR ANTI-CORROSION TREATMENT OF STEEL
LU66991D LU66991A1 (en) 1972-02-10 1973-02-08
IT4730973A IT984363B (en) 1972-02-10 1973-02-09 PROCEDURE TO PROTECT STEELS AGAINST CORROSION
JP1701673A JPS4984931A (en) 1972-02-10 1973-02-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7204448A FR2170971A1 (en) 1972-02-10 1972-02-10 Corrosion resistant steel - by heating in moist atmosphere of nitrogen and hydrogen

Publications (2)

Publication Number Publication Date
FR2170971A1 true FR2170971A1 (en) 1973-09-21
FR2170971B1 FR2170971B1 (en) 1974-06-28

Family

ID=9093271

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7204448A Granted FR2170971A1 (en) 1972-02-10 1972-02-10 Corrosion resistant steel - by heating in moist atmosphere of nitrogen and hydrogen

Country Status (6)

Country Link
JP (1) JPS4984931A (en)
BE (1) BE794528A (en)
DE (1) DE2305996A1 (en)
FR (1) FR2170971A1 (en)
IT (1) IT984363B (en)
LU (1) LU66991A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334938A (en) * 1980-08-22 1982-06-15 Air Products And Chemicals, Inc. Inhibited annealing of ferrous metals containing chromium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
BE794528A (en) 1973-05-16
LU66991A1 (en) 1973-04-19
FR2170971B1 (en) 1974-06-28
DE2305996A1 (en) 1973-08-16
JPS4984931A (en) 1974-08-15
IT984363B (en) 1974-11-20

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Legal Events

Date Code Title Description
ST Notification of lapse