JPS55161063A - Boron layer forming treatment - Google Patents

Boron layer forming treatment

Info

Publication number
JPS55161063A
JPS55161063A JP6793779A JP6793779A JPS55161063A JP S55161063 A JPS55161063 A JP S55161063A JP 6793779 A JP6793779 A JP 6793779A JP 6793779 A JP6793779 A JP 6793779A JP S55161063 A JPS55161063 A JP S55161063A
Authority
JP
Japan
Prior art keywords
boron
treated
boron nitride
temperature
vacuum
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
JP6793779A
Other languages
Japanese (ja)
Inventor
Yoichiro Onishi
Tsutomu Hiroki
Yoshiro Shimamune
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 Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6793779A priority Critical patent/JPS55161063A/en
Publication of JPS55161063A publication Critical patent/JPS55161063A/en
Pending 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
    • C23C8/60—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 solids, e.g. powders, pastes
    • C23C8/62—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 solids, e.g. powders, pastes only one element being applied
    • C23C8/68—Boronising
    • C23C8/70—Boronising 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)
  • Physical Vapour Deposition (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

PURPOSE:To form a superior boron layer at a lower temperature than usual, by closely sticking boron nitride on the material to be treated and diffusing boron decomposed by heating in nonoxidative atmosphere on the surface of the material to be treated. CONSTITUTION:The material to be treated 1 made of metals, such as Ti, Zr, Cr, Mo etc. or these alloys, is buried in the boron nitride powder 2 in the vessel 3 and the cover 4 is covered. The vessel 3 is put in the furnace core tube 5 and the temperature sensor 7 is maintained on the upper part of the cover 4. Vacuum degree of about 10<-6> Torr. is made by evacuating the inner part of the tube 5 by vacuum pump and temperature is raised slowly by the heater 6 and then, is maintained at 700 deg.C or more for about three hours. Boron nitride is decomposed into gaseous nitrogen and solid boron and nitrogen is discharged absorbing by the vacuum pump and then, boron is diffused and permeated in the inner part from the metal surface of the material 1. The material 1 is cooled to the room temperature in vacuum and is takne out from the furnace 5. Surface hardness of the material 1 is increased by the diffusion and permeation of boron and abrasion- resisting property is improved. Existence of chloride or fluoride having an inferior characteristic, is not recognized on the surface because chloride or floride is not used as reaction accelerator as usual.
JP6793779A 1979-05-31 1979-05-31 Boron layer forming treatment Pending JPS55161063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6793779A JPS55161063A (en) 1979-05-31 1979-05-31 Boron layer forming treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6793779A JPS55161063A (en) 1979-05-31 1979-05-31 Boron layer forming treatment

Publications (1)

Publication Number Publication Date
JPS55161063A true JPS55161063A (en) 1980-12-15

Family

ID=13359336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6793779A Pending JPS55161063A (en) 1979-05-31 1979-05-31 Boron layer forming treatment

Country Status (1)

Country Link
JP (1) JPS55161063A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488159A (en) * 1990-07-31 1992-03-23 Tocalo Co Ltd Composite film coated member excellent in wear resistance and molten metal resistance and its manufacture
JPH0790543A (en) * 1993-09-28 1995-04-04 Showa Alum Corp Surface hardening method of cemented carbide member
EP1371744A1 (en) * 2001-03-21 2003-12-17 Honda Giken Kogyo Kabushiki Kaisha Steel material and method for preparation thereof
JP2008156742A (en) * 2006-06-02 2008-07-10 Toyota Central R&D Labs Inc Conductive corrosion-resistant material, and method for producing the same
US7622009B2 (en) 2001-03-21 2009-11-24 Honda Giken Kogyo Kabushiki Kaisha Steel material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488159A (en) * 1990-07-31 1992-03-23 Tocalo Co Ltd Composite film coated member excellent in wear resistance and molten metal resistance and its manufacture
JPH0790543A (en) * 1993-09-28 1995-04-04 Showa Alum Corp Surface hardening method of cemented carbide member
EP1371744A1 (en) * 2001-03-21 2003-12-17 Honda Giken Kogyo Kabushiki Kaisha Steel material and method for preparation thereof
EP1371744A4 (en) * 2001-03-21 2006-11-08 Honda Motor Co Ltd Steel material and method for preparation thereof
US7622009B2 (en) 2001-03-21 2009-11-24 Honda Giken Kogyo Kabushiki Kaisha Steel material
US7655100B2 (en) 2001-03-21 2010-02-02 Honda Giken Kogyo Kabushiki Kaisha Method for preparation of steel material
JP2008156742A (en) * 2006-06-02 2008-07-10 Toyota Central R&D Labs Inc Conductive corrosion-resistant material, and method for producing the same
US8241530B2 (en) 2006-06-02 2012-08-14 Kabushiki Kaisha Toyota Chuo Kenkyusho Metal separator for fuel cell and method for producing the same

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