KR970077795A - Bonding corrosion coating method of gas tight part of fuel cell separator - Google Patents

Bonding corrosion coating method of gas tight part of fuel cell separator Download PDF

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Publication number
KR970077795A
KR970077795A KR1019960019359A KR19960019359A KR970077795A KR 970077795 A KR970077795 A KR 970077795A KR 1019960019359 A KR1019960019359 A KR 1019960019359A KR 19960019359 A KR19960019359 A KR 19960019359A KR 970077795 A KR970077795 A KR 970077795A
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KR
South Korea
Prior art keywords
nickel
fuel cell
gas
base material
heat treatment
Prior art date
Application number
KR1019960019359A
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Korean (ko)
Other versions
KR100394776B1 (en
Inventor
류시역
Original Assignee
이대원
삼성중공업 주식회사
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 이대원, 삼성중공업 주식회사 filed Critical 이대원
Priority to KR1019960019359A priority Critical patent/KR100394776B1/en
Priority to US08/864,745 priority patent/US6090228A/en
Priority to IT97MI001264A priority patent/IT1292033B1/en
Priority to NL1006185A priority patent/NL1006185C2/en
Priority to JP14421597A priority patent/JP3423574B2/en
Publication of KR970077795A publication Critical patent/KR970077795A/en
Application granted granted Critical
Publication of KR100394776B1 publication Critical patent/KR100394776B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0223—Composites
    • H01M8/0228—Composites in the form of layered or coated products
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0048—Molten electrolytes used at high temperature
    • H01M2300/0051—Carbonates
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

본 발명은 용융탄산염 연료전지의 분리판에 관한 것으로, 특히 모재상에 니켈 전기도금을 행한 후 알루미늄 박막을 접착하여 열처리를 통하여 확산시켜 고내식성을 갖게 한 연료분지 분리판의 가스기밀부 접합내식코팅방법에 관한 것이다.The present invention relates to a separator plate of a molten carbonate fuel cell, and in particular, after the electroplating of nickel on a base material, the aluminum thin film is bonded and diffused through heat treatment to bond gas-tight joints to the gas-tight portion of the fuel branch separator that has high corrosion resistance. It is about a method.

본 발명은 공정이 간소하여 제작비가 저렴하며, 확산에 의한 코팅이 이루어지므로 내식성 및 모재와의 접합성이 우수한 코팅층을 얻을 수 있다. 게다가, 가압치구와 고온에서 안정된 세라믹분말을 이용하여 연료전지스택의 형태로 한번에 열처리할 수 있기 때문에 동시에 다수의 분리판의 코팅이 가능하다.In the present invention, a simple process is inexpensive to manufacture, and since coating is performed by diffusion, a coating layer having excellent corrosion resistance and bonding property with a base material can be obtained. In addition, since the heat treatment can be performed at a time in the form of a fuel cell stack using a pressurized jig and a ceramic powder stabilized at a high temperature, coating of a plurality of separator plates is possible at the same time.

Description

연료전지 분리판의 가스기밀부 접합내식코팅방법Bonding corrosion coating method of gas tight part of fuel cell separator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 접합내식코팅방법을 설명하기 위한 설명도, 제2도는 제1도의 Ⅰ부분 확대상세도.1 is an explanatory diagram for explaining the corrosion resistance coating method according to the invention, Figure 2 is an enlarged detail of the portion I of FIG.

Claims (4)

가스가 출입하는 매니폴드부와, 전극을 장착하는 전극부 및, 가스가 외부로 유출되지 않토록 외부로부터 밀폐하는 가스기밀부로 이루어진 연료전지 분리판에 있어서, 니켈을 도금한 모재를 생성하는 단계; 니켈도금된 모재의 기밀부위상에 알루미늄박막을 접합하는 단계; 및 수소가스분위기에서 열처리하여 모재와 니켈 및 알루미늄의 접합면에서의 확산에 의해 니켈-알루미늄금속화합물을 형성하는 단계를 포함하는 연료전지 분리판의 가스기밀부 접합내식코팅방법.A fuel cell separator comprising: a manifold portion into which gas enters and exits, an electrode portion on which an electrode is mounted, and a gas gastight portion sealed from outside to prevent gas from flowing out, the method comprising: generating a nickel-plated base material; Bonding an aluminum thin film on the hermetic portion of the nickel-plated base material; And heat treating in a hydrogen gas atmosphere to form a nickel-aluminum metal compound by diffusion from the bonding surface of the base material and nickel and aluminum. 제1항에 있어서, 상기 열처리는 수소가스분위기에서 660℃∼700℃까지 약 1℃/분의 승온속도로 온도를 올린 다음 2시간을 유지하는 1차열처리단계와, 재차 1℃/분의 승온속도로 900℃∼1000℃ 온도를 올린 다음 약 2시간을 유지하는 2차열처리단계로 이루어진 것을 특징으로 하는 연료전지 분리판의 가스기밀부 접합내식코팅방법.The method of claim 1, wherein the heat treatment is a first heat treatment step of raising the temperature at a temperature increase rate of about 1 ℃ / min from 660 ℃ to 700 ℃ in a hydrogen gas atmosphere and maintaining for 2 hours, and again the temperature increase of 1 ℃ / minute The gas-tight joint corrosion resistance coating method of the fuel cell separator plate comprising a secondary heat treatment step of raising the temperature to 900 ℃ to 1000 ℃ at a rate of about 2 hours. 제1항에 있어서, 상기 니켈도금된 모재는 약 5∼20㎛ 두께의 니켈전기도금이나 니켈-스테인리스 스틸 크래드강판으로 구성됨을 특징으로 하는 연료전지 분리판의 가스기밀부 접합내식코팅방법.The method of claim 1, wherein the nickel-plated base material is made of nickel electroplating or nickel-stainless steel clad steel sheet having a thickness of about 5 to 20 µm. 제1항에 있어서, 상기 열처리중 알루미늄의 반대방향으로의 확산을 막기 위하여 입도가 아주 미세한 세라믹분말을 일정한 두께로 상기 알루미늄박막의 비접합층에 도포하는 것을 특징으로 하는 연료전지 분리판의 가스기밀부 접합내식코팅방법.The gas-tightness of the fuel cell separation plate according to claim 1, wherein a ceramic particle having a very fine particle size is coated on the non-bonded layer of the aluminum thin film to prevent diffusion in the opposite direction of the aluminum during the heat treatment. Subjunction corrosion resistance coating method. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019960019359A 1996-05-31 1996-05-31 Anticorrosive coating method for gas sealing part of fuel cell separator KR100394776B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1019960019359A KR100394776B1 (en) 1996-05-31 1996-05-31 Anticorrosive coating method for gas sealing part of fuel cell separator
US08/864,745 US6090228A (en) 1996-05-31 1997-05-29 Anticorrosive treatment method for a separator of molten carbonate fuel cell
IT97MI001264A IT1292033B1 (en) 1996-05-31 1997-05-29 ANTICORROSIVE TREATMENT METHOD FOR A MOLTEN CARBONATE FUEL CELL SEPARATOR
NL1006185A NL1006185C2 (en) 1996-05-31 1997-05-30 Anti-corrosion treatment method for a fuel cell separator with molten carbonate.
JP14421597A JP3423574B2 (en) 1996-05-31 1997-06-02 Corrosion resistant treatment method for separator of molten carbonate fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960019359A KR100394776B1 (en) 1996-05-31 1996-05-31 Anticorrosive coating method for gas sealing part of fuel cell separator

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KR970077795A true KR970077795A (en) 1997-12-12
KR100394776B1 KR100394776B1 (en) 2003-11-17

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100646945B1 (en) * 2000-09-28 2006-11-17 한국전력공사 Electrode for Preventing Gas Cross Over for Molten Carbonate Fuel Cell
KR101229075B1 (en) 2006-12-20 2013-02-04 한국전력공사 Stack for molten carbonate fuel cell and method of producing separator for molten carbonate fuel cell

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138663A (en) * 1986-11-29 1988-06-10 Toshiba Corp Manufacture of fused carbonate corrosion-resistant material
JPH0417267A (en) * 1990-05-10 1992-01-22 Nisshin Steel Co Ltd Separator plate for fused carbonate type fuel battery
JPH0652868A (en) * 1992-06-19 1994-02-25 Sumitomo Special Metals Co Ltd Separator masking material for molten carbonate fuel cell and manufacture thereof

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