JPS56280A - Corrosion prevention of aluminum product assembled by vacuum brazing - Google Patents

Corrosion prevention of aluminum product assembled by vacuum brazing

Info

Publication number
JPS56280A
JPS56280A JP7607479A JP7607479A JPS56280A JP S56280 A JPS56280 A JP S56280A JP 7607479 A JP7607479 A JP 7607479A JP 7607479 A JP7607479 A JP 7607479A JP S56280 A JPS56280 A JP S56280A
Authority
JP
Japan
Prior art keywords
brazing
vacuum brazing
corrosion
alloy
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
JP7607479A
Other languages
Japanese (ja)
Inventor
Ichiro Iwai
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.)
Altemira Co Ltd
Original Assignee
Showa Aluminum 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 Showa Aluminum Corp filed Critical Showa Aluminum Corp
Priority to JP7607479A priority Critical patent/JPS56280A/en
Publication of JPS56280A publication Critical patent/JPS56280A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
    • B23K35/286—Al as the principal constituent
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE:To sufficiently prevent corrosion of Al products assembled by use of vacuum brazing by a method wherein an Al alloy brazing material contg. specific amount of Si, Mg, In, etc. is used for vacuum brazing, then boehmite treatment is performed. CONSTITUTION:In order to prevent corrosion of Al products assembled by vacuum brazing, an Al alloy brazing material consisting of Si: 7-10wt%, Mg: 0.5- 1.5wt%, In: 0.05-0.2wt%, and the remaining Al is used for the vacuum brazing, then boehmite treatment is applied. The above brazing alloy has good fluidity and excellent brazing property, and undergoes sacrificial corrosion to protect the base material for a long period of time after brazing. The boehmite-reaction forms an oxide layer on the base material, and the synergistic effect of these sufficiently prevents the products from corrosion.
JP7607479A 1979-06-15 1979-06-15 Corrosion prevention of aluminum product assembled by vacuum brazing Pending JPS56280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7607479A JPS56280A (en) 1979-06-15 1979-06-15 Corrosion prevention of aluminum product assembled by vacuum brazing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7607479A JPS56280A (en) 1979-06-15 1979-06-15 Corrosion prevention of aluminum product assembled by vacuum brazing

Publications (1)

Publication Number Publication Date
JPS56280A true JPS56280A (en) 1981-01-06

Family

ID=13594650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7607479A Pending JPS56280A (en) 1979-06-15 1979-06-15 Corrosion prevention of aluminum product assembled by vacuum brazing

Country Status (1)

Country Link
JP (1) JPS56280A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2360477A (en) * 2000-03-22 2001-09-26 Gea Sprio Gills Ltd Brazing aluminium components
US8136716B2 (en) * 2003-09-11 2012-03-20 Behr Gmbh & Co. Kg Soldering work piece, soldering method and heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2360477A (en) * 2000-03-22 2001-09-26 Gea Sprio Gills Ltd Brazing aluminium components
US8136716B2 (en) * 2003-09-11 2012-03-20 Behr Gmbh & Co. Kg Soldering work piece, soldering method and heat exchanger

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