JPS5726159A - Ion surface treatment - Google Patents

Ion surface treatment

Info

Publication number
JPS5726159A
JPS5726159A JP9987980A JP9987980A JPS5726159A JP S5726159 A JPS5726159 A JP S5726159A JP 9987980 A JP9987980 A JP 9987980A JP 9987980 A JP9987980 A JP 9987980A JP S5726159 A JPS5726159 A JP S5726159A
Authority
JP
Japan
Prior art keywords
torr
treated
thence
diffusing
treating
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
JP9987980A
Other languages
Japanese (ja)
Other versions
JPS6231065B2 (en
Inventor
Kazuyoshi Terakado
Naotatsu Asahi
Shizuka Yamaguchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9987980A priority Critical patent/JPS5726159A/en
Priority to KR1019810002591A priority patent/KR890001031B1/en
Publication of JPS5726159A publication Critical patent/JPS5726159A/en
Publication of JPS6231065B2 publication Critical patent/JPS6231065B2/ja
Granted 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
    • C23C8/06—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 gases
    • C23C8/36—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 gases using ionised gases, e.g. ionitriding
    • 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
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • 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
    • C21D1/06—Surface hardening

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To form a uniform cemented layer of a constant concn. by giving preference to reaction of alloying a treating material on an object to be treated and treatment of diffusing the treating material in the material to be treated in treating the surface by glow discharge. CONSTITUTION:Auxiliary graphite electrodes 20 are provided in places requiring abrasion resistance of an object 2 to be treated to provide cathodes. A furnace body 1 is used as an anode. First, the inside of the furnace body 1 is evacuated to <=10<-1> torr in a vacuum device 9, and gaseous mixeture of metane and hydrogen are introduced. At the carburizing, the gases are kept at about 3 torr, and at the diffusing they are kept at about 4 torr by stopping the introduction of the gaseous methane, thence DC voltage is applied between both electrodes. The carburization time per time is set at about 3min, and the diffusion time per time at about 9min, and the treatment is carried out repeatedly about 5 times. After the carburization, the object is cooled in a furnace, thence it is heated of the surface at about 930 deg.C by high frequency induction heating, and is quenched by spray cooling. Following to this, it is tempered at a low temp. of about 180 deg.C for aobut 1hr.
JP9987980A 1980-07-23 1980-07-23 Ion surface treatment Granted JPS5726159A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9987980A JPS5726159A (en) 1980-07-23 1980-07-23 Ion surface treatment
KR1019810002591A KR890001031B1 (en) 1980-07-23 1981-07-16 Metal surface treatment method by glow discharge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9987980A JPS5726159A (en) 1980-07-23 1980-07-23 Ion surface treatment

Publications (2)

Publication Number Publication Date
JPS5726159A true JPS5726159A (en) 1982-02-12
JPS6231065B2 JPS6231065B2 (en) 1987-07-06

Family

ID=14259083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9987980A Granted JPS5726159A (en) 1980-07-23 1980-07-23 Ion surface treatment

Country Status (2)

Country Link
JP (1) JPS5726159A (en)
KR (1) KR890001031B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630133A1 (en) * 1988-04-18 1989-10-20 Siderurgie Fse Inst Rech PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF METAL MATERIALS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323836A (en) * 1976-08-19 1978-03-04 Kawasaki Heavy Ind Ltd Ionitriding
JPS5544541A (en) * 1978-09-22 1980-03-28 Mitsubishi Electric Corp Partially hardening method by electric discharge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323836A (en) * 1976-08-19 1978-03-04 Kawasaki Heavy Ind Ltd Ionitriding
JPS5544541A (en) * 1978-09-22 1980-03-28 Mitsubishi Electric Corp Partially hardening method by electric discharge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630133A1 (en) * 1988-04-18 1989-10-20 Siderurgie Fse Inst Rech PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF METAL MATERIALS

Also Published As

Publication number Publication date
KR890001031B1 (en) 1989-04-20
JPS6231065B2 (en) 1987-07-06
KR830006463A (en) 1983-09-24

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