FR2240960A1 - Low carbon steel containing niobium - coated with chromium to give good corrosion resistance - Google Patents

Low carbon steel containing niobium - coated with chromium to give good corrosion resistance

Info

Publication number
FR2240960A1
FR2240960A1 FR7427907A FR7427907A FR2240960A1 FR 2240960 A1 FR2240960 A1 FR 2240960A1 FR 7427907 A FR7427907 A FR 7427907A FR 7427907 A FR7427907 A FR 7427907A FR 2240960 A1 FR2240960 A1 FR 2240960A1
Authority
FR
France
Prior art keywords
substrate
coated
chromium
corrosion resistance
carbon 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
FR7427907A
Other languages
French (fr)
Other versions
FR2240960B1 (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.)
Solvay Solutions UK Ltd
Original Assignee
Albright and Wilson Ltd
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 Albright and Wilson Ltd filed Critical Albright and Wilson Ltd
Publication of FR2240960A1 publication Critical patent/FR2240960A1/en
Application granted granted Critical
Publication of FR2240960B1 publication Critical patent/FR2240960B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C23C10/08—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases only one element being diffused
    • C23C10/10—Chromising
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
    • C23C10/32—Chromising
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • C23C10/40—Chromising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A steel contg. C, Nb, Mn coated with Cr is claimed to be an alternative to stainless steels at a lower cost. The substrate compsn. is C > 0.03%, Nb 0.03-0.5%, Mn 0.2-0.9%, with the Nb and C contents given by the relation A = %C - %Nb 0.01 Z where 1= Z =83, pref. 4= Z =15 and 0.1= A =1. The substrate is coated with a Cr layer 0.0254-0.0762 mm thick by heating the substrate in a protective atmos. with a source of chromium and an activator, notably FeCl2. There is a high C content in the coating, namely 0.1-1% and is given by the equation A = Y.Z A is the % C in the coating, Y is the free carbon content of the substrate, defined by Y = % C (in substrate) % Nb / 8 0.01 and Z is a factor defined by ratio thickness of substrate (2 x thickness of diffusion zone of chromium coating) + 0.0254.
FR7427907A 1973-08-13 1974-08-12 Low carbon steel containing niobium - coated with chromium to give good corrosion resistance Granted FR2240960A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38762773A 1973-08-13 1973-08-13

Publications (2)

Publication Number Publication Date
FR2240960A1 true FR2240960A1 (en) 1975-03-14
FR2240960B1 FR2240960B1 (en) 1977-12-16

Family

ID=23530712

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427907A Granted FR2240960A1 (en) 1973-08-13 1974-08-12 Low carbon steel containing niobium - coated with chromium to give good corrosion resistance

Country Status (7)

Country Link
JP (1) JPS5044914A (en)
BE (1) BE818741A (en)
CA (1) CA1039128A (en)
DE (1) DE2438405A1 (en)
FR (1) FR2240960A1 (en)
IT (1) IT1020676B (en)
NL (1) NL7410717A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747495A1 (en) * 1995-06-08 1996-12-11 Sollac S.A. Niobium containing hot rolled steel sheet with high strength and good deep-drawing properties, and process for its manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3001976B1 (en) * 2013-02-13 2015-02-20 Air Liquide METHOD FOR DEPOSITING COATING AGAINST CORROSION

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747495A1 (en) * 1995-06-08 1996-12-11 Sollac S.A. Niobium containing hot rolled steel sheet with high strength and good deep-drawing properties, and process for its manufacture
FR2735148A1 (en) * 1995-06-08 1996-12-13 Lorraine Laminage HOT ROLLED STEEL PLATE HAVING HIGH RESISTANCE AND HIGH EMBOSSABILITY COMPRISING NIOBIUM, AND METHODS OF MANUFACTURE THEREOF.
US5817196A (en) * 1995-06-08 1998-10-06 Sollac (Societe Anonyme) Niobium-containing hot-rolled steel sheet with high strength and high drawability and its manufacturing processes

Also Published As

Publication number Publication date
CA1039128A (en) 1978-09-26
DE2438405A1 (en) 1975-02-27
FR2240960B1 (en) 1977-12-16
JPS5044914A (en) 1975-04-22
IT1020676B (en) 1977-12-30
BE818741A (en) 1974-12-02
NL7410717A (en) 1975-02-17

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Legal Events

Date Code Title Description
ST Notification of lapse