JPS5333931A - Doubleecoating for protection from heat and corrosion - Google Patents

Doubleecoating for protection from heat and corrosion

Info

Publication number
JPS5333931A
JPS5333931A JP10734177A JP10734177A JPS5333931A JP S5333931 A JPS5333931 A JP S5333931A JP 10734177 A JP10734177 A JP 10734177A JP 10734177 A JP10734177 A JP 10734177A JP S5333931 A JPS5333931 A JP S5333931A
Authority
JP
Japan
Prior art keywords
doubleecoating
corrosion
protection
heat
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
JP10734177A
Other languages
English (en)
Other versions
JPS5639389B2 (ja
Inventor
Kuraaku Tatsukaa Jiyun Robaato
Hawaado Uezarii Maaru
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.)
Union Carbide Corp
Original Assignee
Union Carbide 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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of JPS5333931A publication Critical patent/JPS5333931A/ja
Publication of JPS5639389B2 publication Critical patent/JPS5639389B2/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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/939—Molten or fused coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12049—Nonmetal component
    • Y10T428/12056—Entirely inorganic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12611—Oxide-containing component
    • Y10T428/12618—Plural oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Powder Metallurgy (AREA)
JP10734177A 1976-09-09 1977-09-08 Doubleecoating for protection from heat and corrosion Granted JPS5333931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/721,863 US4095003A (en) 1976-09-09 1976-09-09 Duplex coating for thermal and corrosion protection

Publications (2)

Publication Number Publication Date
JPS5333931A true JPS5333931A (en) 1978-03-30
JPS5639389B2 JPS5639389B2 (ja) 1981-09-12

Family

ID=24899622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10734177A Granted JPS5333931A (en) 1976-09-09 1977-09-08 Doubleecoating for protection from heat and corrosion

Country Status (9)

Country Link
US (1) US4095003A (ja)
JP (1) JPS5333931A (ja)
BE (1) BE858532A (ja)
CA (1) CA1095342A (ja)
CH (1) CH623607A5 (ja)
DE (1) DE2740398C3 (ja)
FR (1) FR2364276A1 (ja)
GB (1) GB1588984A (ja)
IT (1) IT1091132B (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61174385A (ja) * 1984-09-10 1986-08-06 Hitachi Ltd セラミツク被覆耐熱部材及びその製造方法
JPS63195254A (ja) * 1987-02-09 1988-08-12 Toyo Kohan Co Ltd 複合材の製造方法
JPS6425960A (en) * 1987-07-21 1989-01-27 Kanmeta Eng Kk Formation of corrosion preventing film withstanding acidic environment
JPH04131363A (ja) * 1990-09-20 1992-05-06 Japan Atom Energy Res Inst 下地用プラズマ溶射膜
US6818321B2 (en) 2001-11-02 2004-11-16 Tocalo Co., Ltd. High-temperature strength member
JP2009299192A (ja) * 2009-09-24 2009-12-24 Hitachi Ltd 遮熱被覆を有する耐熱部材およびガスタービン

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JPS53138905A (en) * 1977-05-12 1978-12-04 Kawasaki Steel Co Blast furnace exit
US4291448A (en) * 1977-12-12 1981-09-29 Turbine Components Corporation Method of restoring the shrouds of turbine blades
SE8000480L (sv) * 1979-02-01 1980-08-02 Johnson Matthey Co Ltd Artikel lemplig for anvendning vid hoga temperaturer
US4273824A (en) * 1979-05-11 1981-06-16 United Technologies Corporation Ceramic faced structures and methods for manufacture thereof
US4280975A (en) * 1979-10-12 1981-07-28 General Electric Company Method for constructing a turbine shroud
US4289447A (en) * 1979-10-12 1981-09-15 General Electric Company Metal-ceramic turbine shroud and method of making the same
US4255495A (en) * 1979-10-31 1981-03-10 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Corrosion resistant thermal barrier coating
US4401697A (en) * 1980-01-07 1983-08-30 United Technologies Corporation Method for producing columnar grain ceramic thermal barrier coatings
US4405659A (en) * 1980-01-07 1983-09-20 United Technologies Corporation Method for producing columnar grain ceramic thermal barrier coatings
US4321311A (en) * 1980-01-07 1982-03-23 United Technologies Corporation Columnar grain ceramic thermal barrier coatings
US4321310A (en) * 1980-01-07 1982-03-23 United Technologies Corporation Columnar grain ceramic thermal barrier coatings on polished substrates
US4405660A (en) * 1980-01-07 1983-09-20 United Technologies Corporation Method for producing metallic articles having durable ceramic thermal barrier coatings
US4414249A (en) * 1980-01-07 1983-11-08 United Technologies Corporation Method for producing metallic articles having durable ceramic thermal barrier coatings
JPS56110404U (ja) * 1980-01-28 1981-08-26
US4447503A (en) * 1980-05-01 1984-05-08 Howmet Turbine Components Corporation Superalloy coating composition with high temperature oxidation resistance
US4402992A (en) * 1981-12-07 1983-09-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Covering solid, film cooled surfaces with a duplex thermal barrier coating
US4485151A (en) * 1982-05-06 1984-11-27 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Thermal barrier coating system
DE3246504A1 (de) * 1982-12-16 1984-06-20 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Hochtemperatur-schutzschicht
US4495907A (en) * 1983-01-18 1985-01-29 Cummins Engine Company, Inc. Combustion chamber components for internal combustion engines
US4535033A (en) * 1983-08-16 1985-08-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Thermal barrier coating system
SE8401757L (sv) * 1984-03-30 1985-10-01 Yngve Lindblom Metalloxidkeramiska ytskikt pa hog temperaturmaterial
EP0198078A4 (en) * 1984-10-17 1988-11-24 Stanford Res Inst Int METHOD FOR APPLYING COATINGS TO METALS AND PRODUCTS MADE THEREOF.
AU595553B2 (en) * 1985-10-18 1990-04-05 Union Carbide Corporation High volume fraction refractory oxide, thermal shock resistant coatings
US4668262A (en) * 1985-12-30 1987-05-26 Owens-Corning Fiberglas Corporation Protective coating for refractory metal substrates
CH670874A5 (ja) * 1986-02-04 1989-07-14 Castolin Sa
IL84067A (en) * 1986-10-30 1992-03-29 United Technologies Corp Thermal barrier coating system
GB2199849B (en) * 1987-01-16 1991-05-15 Rolls Royce Plc Superalloy surface treatment against vapourisation
FR2615871B1 (fr) * 1987-05-26 1989-06-30 Snecma Pieces de turbomachine en superalliage comportant un revetement protecteur metalloceramique
US5223045A (en) * 1987-08-17 1993-06-29 Barson Corporation Refractory metal composite coated article
US4927714A (en) * 1987-08-17 1990-05-22 Barson Corporation Refractory metal composite coated article
US4889776A (en) * 1987-08-17 1989-12-26 Barson Corporation Refractory metal composite coated article
US4942732A (en) * 1987-08-17 1990-07-24 Barson Corporation Refractory metal composite coated article
DE3740478C1 (de) * 1987-11-28 1989-01-19 Asea Brown Boveri Hochtemperatur-Schutzschicht
DE8816295U1 (de) * 1988-03-02 1989-07-06 Heinzel, Winfried, 7758 Meersburg Beschichtete Platte für Haushaltsgeräte
US4943487A (en) * 1988-07-18 1990-07-24 Inco Alloys International, Inc. Corrosion resistant coating for oxide dispersion strengthened alloys
US5314601A (en) * 1989-06-30 1994-05-24 Eltech Systems Corporation Electrodes of improved service life
US4981713A (en) * 1990-02-14 1991-01-01 E. I. Du Pont De Nemours And Company Low temperature plasma technology for corrosion protection of steel
US4980196A (en) * 1990-02-14 1990-12-25 E. I. Du Pont De Nemours And Company Method of coating steel substrate using low temperature plasma processes and priming
US5238752A (en) * 1990-05-07 1993-08-24 General Electric Company Thermal barrier coating system with intermetallic overlay bond coat
US5236745A (en) * 1991-09-13 1993-08-17 General Electric Company Method for increasing the cyclic spallation life of a thermal barrier coating
EP0546756A3 (en) * 1991-12-12 1993-11-10 Gen Electric Pre-oxidation of alloy powder coatings
US5326645A (en) * 1992-03-06 1994-07-05 Praxair S.T. Technology, Inc. Nickel-chromium corrosion coating and process for producing it
US6551423B1 (en) 1998-09-08 2003-04-22 General Electric Co. Preparation of low-sulfur platinum and platinum aluminide layers in thermal barrier coatings
US6333121B1 (en) * 1992-10-13 2001-12-25 General Electric Company Low-sulfur article having a platinum-aluminide protective layer and its preparation
US5419971A (en) * 1993-03-03 1995-05-30 General Electric Company Enhanced thermal barrier coating system
US5579534A (en) * 1994-05-23 1996-11-26 Kabushiki Kaisha Toshiba Heat-resistant member
US5721188A (en) * 1995-01-17 1998-02-24 Engelhard Corporation Thermal spray method for adhering a catalytic material to a metallic substrate
US5683761A (en) * 1995-05-25 1997-11-04 General Electric Company Alpha alumina protective coatings for bond-coated substrates and their preparation
US6123997A (en) * 1995-12-22 2000-09-26 General Electric Company Method for forming a thermal barrier coating
DE69615517T2 (de) * 1995-12-22 2002-05-16 General Electric Co., Schenectady Körper mit Hochtemperatur-Schutzschicht und Verfahren zum Beschichten
US5955182A (en) * 1996-02-05 1999-09-21 Kabushiki Kaisha Toshiba Heat resisting member and its production method
US5794338A (en) 1997-04-04 1998-08-18 General Electric Company Method for repairing a turbine engine member damaged tip
US5817372A (en) * 1997-09-23 1998-10-06 General Electric Co. Process for depositing a bond coat for a thermal barrier coating system
US6096381A (en) * 1997-10-27 2000-08-01 General Electric Company Process for densifying and promoting inter-particle bonding of a bond coat for a thermal barrier coating
US6180262B1 (en) * 1997-12-19 2001-01-30 United Technologies Corporation Thermal coating composition
EP1076727B1 (en) * 1998-02-28 2005-06-01 General Electric Company Multilayer bond coat for a thermal barrier coating system and process therefor
US6042880A (en) * 1998-12-22 2000-03-28 General Electric Company Renewing a thermal barrier coating system
US6233822B1 (en) 1998-12-22 2001-05-22 General Electric Company Repair of high pressure turbine shrouds
US20020029032A1 (en) 2000-09-07 2002-03-07 Eva Arkin Fluorescent surgical hardware and surgical supplies for improved visualization
US6869550B2 (en) 2000-12-08 2005-03-22 Sulzer Metco (Us) Inc. Method of producing a pre-alloyed stabilized zirconia powder
US6635362B2 (en) 2001-02-16 2003-10-21 Xiaoci Maggie Zheng High temperature coatings for gas turbines
US6607789B1 (en) 2001-04-26 2003-08-19 General Electric Company Plasma sprayed thermal bond coat system
EP1327702A1 (en) * 2002-01-10 2003-07-16 ALSTOM (Switzerland) Ltd Mcraiy bond coating and method of depositing said mcraiy bond coating
CN100350075C (zh) * 2002-01-18 2007-11-21 阿尔斯托姆科技有限公司 高温防护层
US6759151B1 (en) 2002-05-22 2004-07-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Multilayer article characterized by low coefficient of thermal expansion outer layer
US6733908B1 (en) 2002-07-08 2004-05-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Multilayer article having stabilized zirconia outer layer and chemical barrier layer
US7094450B2 (en) * 2003-04-30 2006-08-22 General Electric Company Method for applying or repairing thermal barrier coatings
ATE316160T1 (de) * 2003-06-26 2006-02-15 Alstom Technology Ltd Verfahren für das auftragen eines mehrschichtigen systems
US7078073B2 (en) 2003-11-13 2006-07-18 General Electric Company Method for repairing coated components
US7645485B2 (en) * 2004-04-30 2010-01-12 Honeywell International Inc. Chromiumm diffusion coatings
JP4607530B2 (ja) * 2004-09-28 2011-01-05 株式会社日立製作所 遮熱被覆を有する耐熱部材およびガスタービン
ATE471571T1 (de) * 2006-03-23 2010-07-15 Timken Co Oberflächenbehandlungen für spiralförmige und abgeschrägte getriebeeinheiten
US7875200B2 (en) * 2008-05-20 2011-01-25 United Technologies Corporation Method for a repair process
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US3721534A (en) * 1971-09-01 1973-03-20 Gte Sylvania Inc Method of forming protective coatings on ferrous metal and the resulting article
US3837894A (en) * 1972-05-22 1974-09-24 Union Carbide Corp Process for producing a corrosion resistant duplex coating
CA1004964A (en) * 1972-05-30 1977-02-08 Union Carbide Corporation Corrosion resistant coatings and process for making the same
CS155480B1 (ja) * 1972-06-02 1974-05-30

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61174385A (ja) * 1984-09-10 1986-08-06 Hitachi Ltd セラミツク被覆耐熱部材及びその製造方法
JPH0563555B2 (ja) * 1984-09-10 1993-09-10 Hitachi Ltd
JPS63195254A (ja) * 1987-02-09 1988-08-12 Toyo Kohan Co Ltd 複合材の製造方法
JPS6425960A (en) * 1987-07-21 1989-01-27 Kanmeta Eng Kk Formation of corrosion preventing film withstanding acidic environment
JPH04131363A (ja) * 1990-09-20 1992-05-06 Japan Atom Energy Res Inst 下地用プラズマ溶射膜
US6818321B2 (en) 2001-11-02 2004-11-16 Tocalo Co., Ltd. High-temperature strength member
JP2009299192A (ja) * 2009-09-24 2009-12-24 Hitachi Ltd 遮熱被覆を有する耐熱部材およびガスタービン

Also Published As

Publication number Publication date
DE2740398C3 (de) 1987-12-03
DE2740398B2 (de) 1980-08-14
FR2364276A1 (fr) 1978-04-07
FR2364276B1 (ja) 1983-09-09
US4095003A (en) 1978-06-13
BE858532A (fr) 1978-03-08
CH623607A5 (ja) 1981-06-15
IT1091132B (it) 1985-06-26
GB1588984A (en) 1981-05-07
CA1095342A (en) 1981-02-10
JPS5639389B2 (ja) 1981-09-12
DE2740398A1 (de) 1978-03-16

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