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JPS5719371A - Surface treatment of steel product - Google Patents

Surface treatment of steel product

Info

Publication number
JPS5719371A
JPS5719371A JP9169580A JP9169580A JPS5719371A JP S5719371 A JPS5719371 A JP S5719371A JP 9169580 A JP9169580 A JP 9169580A JP 9169580 A JP9169580 A JP 9169580A JP S5719371 A JPS5719371 A JP S5719371A
Authority
JP
Japan
Prior art keywords
products
layer
decarburized
ferrite
diffuse
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.)
Pending
Application number
JP9169580A
Other languages
Japanese (ja)
Inventor
Fujimitsu Masuyama
Yuzo Kawahara
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP9169580A priority Critical patent/JPS5719371A/en
Publication of JPS5719371A publication Critical patent/JPS5719371A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C10/00Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02Pretreatment of the material to be coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To further enhance the corrosion resistance of steel products each having a decarburized layer formed on the surface by coating the surfaces of the products with Al and allowing Al to diffuse and penetrate into the surface parts by heating. CONSTITUTION:Steel products are heated in an atmosphere of hydrogen or the air to form decarburized layers each having a prescribed thickness on the surfaces, and they are dipped in molten Al to coat the surfaces with Al. The Al coated products are heated in the air, an inert gas such as N2 or Ar or a vacuum to allow Al to diffuse and penetrate into the surface parts of the products. Thus, a decarburized layer D made of ferrite, a diffused layer K (FeAl2, alpha solid soln.) and an Al plated layer A (FeAl3, FeAl5) exist on each base material M (ferrite + carbide structure) in order. The thickness of each layer D, K, A is regulated according to the usage.
JP9169580A 1980-07-07 1980-07-07 Surface treatment of steel product Pending JPS5719371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9169580A JPS5719371A (en) 1980-07-07 1980-07-07 Surface treatment of steel product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9169580A JPS5719371A (en) 1980-07-07 1980-07-07 Surface treatment of steel product

Publications (1)

Publication Number Publication Date
JPS5719371A true JPS5719371A (en) 1982-02-01

Family

ID=14033643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9169580A Pending JPS5719371A (en) 1980-07-07 1980-07-07 Surface treatment of steel product

Country Status (1)

Country Link
JP (1) JPS5719371A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63216957A (en) * 1987-03-06 1988-09-09 Nippon Yakin Kogyo Co Ltd Stainless steel having excellent resistance to high-temperature oxidation
JP2013185220A (en) * 2012-03-08 2013-09-19 Tokyo Electric Power Co Inc:The Piping for steam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63216957A (en) * 1987-03-06 1988-09-09 Nippon Yakin Kogyo Co Ltd Stainless steel having excellent resistance to high-temperature oxidation
JPH0463152B2 (en) * 1987-03-06 1992-10-08 Nippon Yakin Kogyo Co Ltd
JP2013185220A (en) * 2012-03-08 2013-09-19 Tokyo Electric Power Co Inc:The Piping for steam

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