JPS5625963A - Melt nitriding method for aluminum and aluminum alloy - Google Patents

Melt nitriding method for aluminum and aluminum alloy

Info

Publication number
JPS5625963A
JPS5625963A JP10026279A JP10026279A JPS5625963A JP S5625963 A JPS5625963 A JP S5625963A JP 10026279 A JP10026279 A JP 10026279A JP 10026279 A JP10026279 A JP 10026279A JP S5625963 A JPS5625963 A JP S5625963A
Authority
JP
Japan
Prior art keywords
aluminum
alloy
ammonia
molten state
gas
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
JP10026279A
Other languages
Japanese (ja)
Other versions
JPS5751466B2 (en
Inventor
Toshihiro Yamada
Kazuyoshi Hatano
Yoshiaki Ibaraki
Susumu Hioki
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 JP10026279A priority Critical patent/JPS5625963A/en
Publication of JPS5625963A publication Critical patent/JPS5625963A/en
Publication of JPS5751466B2 publication Critical patent/JPS5751466B2/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
    • C23C8/08—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 only one element being applied
    • C23C8/24—Nitriding
    • 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

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)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

PURPOSE:To give aluminum or aluminum alloy excellent wear resistance, by keeping the aluminum or aluminum alloy in molten state by an arc heat source in an atmosphere of inert gas and ammonia, then by cooling it slowly. CONSTITUTION:Aluminum or its alloy is kept in molten state by an arc heat source in mixed gas atmosphere composed of ammonia and inert gas such as argon, helium etc. and is cooled slowly. Ratio of ammonia to inert gas is 10-20%. The time for keeping Al or Al alloy in molten state is about 30-90sec. For example, aluminum 1 and tungsten 3 are used as electrodes. A mixed gas consisting of 95% argon and 5% ammonia gas is fed into a torch 2 through a gas pipe 4. An arc is generated between both electrodes 1, 3 by an electric power source 55 to form a molten pool 7. The aluminum or its alloy is kept in molten state for 60sec, finally it is cooled slowly. Hereby AlN layer is formed uniformly in the surface layer, hence treated material attains wear resistance.
JP10026279A 1979-08-08 1979-08-08 Melt nitriding method for aluminum and aluminum alloy Granted JPS5625963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10026279A JPS5625963A (en) 1979-08-08 1979-08-08 Melt nitriding method for aluminum and aluminum alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10026279A JPS5625963A (en) 1979-08-08 1979-08-08 Melt nitriding method for aluminum and aluminum alloy

Publications (2)

Publication Number Publication Date
JPS5625963A true JPS5625963A (en) 1981-03-12
JPS5751466B2 JPS5751466B2 (en) 1982-11-02

Family

ID=14269281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10026279A Granted JPS5625963A (en) 1979-08-08 1979-08-08 Melt nitriding method for aluminum and aluminum alloy

Country Status (1)

Country Link
JP (1) JPS5625963A (en)

Also Published As

Publication number Publication date
JPS5751466B2 (en) 1982-11-02

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