JPS57134550A - Diffusion-coating method for alloy - Google Patents

Diffusion-coating method for alloy

Info

Publication number
JPS57134550A
JPS57134550A JP1812581A JP1812581A JPS57134550A JP S57134550 A JPS57134550 A JP S57134550A JP 1812581 A JP1812581 A JP 1812581A JP 1812581 A JP1812581 A JP 1812581A JP S57134550 A JPS57134550 A JP S57134550A
Authority
JP
Japan
Prior art keywords
diffusion
parts
powder
corrosion resistance
resistance
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
JP1812581A
Other languages
Japanese (ja)
Inventor
Akira Okayama
Mitsuo Chikazaki
Kiyoshi Otaka
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 JP1812581A priority Critical patent/JPS57134550A/en
Publication of JPS57134550A publication Critical patent/JPS57134550A/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
    • C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material surfaces
    • 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
    • C23C10/48—Aluminising
    • 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
    • C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material surfaces
    • C23C12/02—Diffusion in one step

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To form an Al diffusion-coated layer with superior thermal impact resistance and corrosion resistance on the surface of an Ni or Co alloy by forming an Al diffusion-coated layer contg. a very small amount of B and by converting it into monoaluminide. CONSTITUTION:In order to form Al diffusion-coated layers with superior mechanical strength, corrosion resistance and oxidation resistance on the surfaces of parts of a gas turbine or the like made of Ni or Co alloyk the parts are buuied in a packing material consisting of Al powder, B powder, powder of an inert refractory such as Al2O3, a halogenated activator such as NH4Cl, NH4F or NaCl, and they are heated to >=850 deg.C to form diffused layers of an intermetallic compound such as Ni2Al3 or Co2Al3 on the surfaces of the parts. At this time, the wt. ratio of B/Al in the packing material is adjusted to 0.01-0.45. The parts are then reheated to >=1.000 deg.C to convert the intermetallic compound nto NiAl or CoAl. Thus, coated layers with superior thermal impact resistance and corrosion resistance are formed.
JP1812581A 1981-02-12 1981-02-12 Diffusion-coating method for alloy Pending JPS57134550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1812581A JPS57134550A (en) 1981-02-12 1981-02-12 Diffusion-coating method for alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1812581A JPS57134550A (en) 1981-02-12 1981-02-12 Diffusion-coating method for alloy

Publications (1)

Publication Number Publication Date
JPS57134550A true JPS57134550A (en) 1982-08-19

Family

ID=11962874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1812581A Pending JPS57134550A (en) 1981-02-12 1981-02-12 Diffusion-coating method for alloy

Country Status (1)

Country Link
JP (1) JPS57134550A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03180461A (en) * 1989-12-08 1991-08-06 Isuzu Motors Ltd Aluminizing for metallic surface
CN103614692A (en) * 2013-12-11 2014-03-05 广西大学 Method for preparing coating on niobium-based alloy by using aluminoboriding process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03180461A (en) * 1989-12-08 1991-08-06 Isuzu Motors Ltd Aluminizing for metallic surface
CN103614692A (en) * 2013-12-11 2014-03-05 广西大学 Method for preparing coating on niobium-based alloy by using aluminoboriding process

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