WO2001009059A1 - Glass-ceramic joining material and method of joining - Google Patents
Glass-ceramic joining material and method of joining Download PDFInfo
- Publication number
- WO2001009059A1 WO2001009059A1 PCT/US2000/020534 US0020534W WO0109059A1 WO 2001009059 A1 WO2001009059 A1 WO 2001009059A1 US 0020534 W US0020534 W US 0020534W WO 0109059 A1 WO0109059 A1 WO 0109059A1
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- WIPO (PCT)
- Prior art keywords
- solid
- recited
- component
- joint
- mol
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims description 12
- 239000002241 glass-ceramic Substances 0.000 title abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 60
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 9
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 7
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 7
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 8
- 150000004706 metal oxides Chemical class 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011195 cermet Substances 0.000 claims description 6
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 6
- 238000000840 electrochemical analysis Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 108010083687 Ion Pumps Proteins 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000010416 ion conductor Substances 0.000 claims 4
- 239000006112 glass ceramic composition Substances 0.000 abstract description 12
- 239000007784 solid electrolyte Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 229910052593 corundum Inorganic materials 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 18
- 210000004027 cell Anatomy 0.000 description 16
- 239000003792 electrolyte Substances 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- AHKZTVQIVOEVFO-UHFFFAOYSA-N oxide(2-) Chemical compound [O-2] AHKZTVQIVOEVFO-UHFFFAOYSA-N 0.000 description 7
- 241000894007 species Species 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 210000003850 cellular structure Anatomy 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- -1 but not limited to Chemical class 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910002080 8 mol% Y2O3 fully stabilized ZrO2 Inorganic materials 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- FBMUYWXYWIZLNE-UHFFFAOYSA-N nickel phosphide Chemical compound [Ni]=P#[Ni] FBMUYWXYWIZLNE-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000005365 phosphate glass Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0036—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and a divalent metal oxide as main constituents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
- C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
- C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
- C04B37/025—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of glass or ceramic material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4073—Composition or fabrication of the solid electrolyte
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1213—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
- C04B2237/10—Glass interlayers, e.g. frit or flux
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
- C04B2237/345—Refractory metal oxides
- C04B2237/348—Zirconia, hafnia, zirconates or hafnates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/40—Metallic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/40—Metallic
- C04B2237/401—Cermets
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
- C04B2237/765—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc at least one member being a tube
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
-
- 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
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
- H01M2300/0071—Oxides
- H01M2300/0074—Ion conductive at high temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
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- 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
- Y02E60/10—Energy storage using batteries
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention s a glass ceramic material and method of making, specifically for use in electrochemical devices such as fuel cells, gas sensors, oxygen or hydrogen pumps/separators, or for sealing any material with a thermal expansion coefficient similar to the seal material.
- solid electrolyte or “solid oxide ion conducting electrolyte” are interchangable.
- joint includes the term “seal” because, in this glass-ceramic field, the “seal” joins at least two parts. However, the “joint” may be intermittent thereby not serving as a "seal”.
- Ceramic materials are being used more often from automobile turbochargers to experimental fuel cells.
- solid oxide ion conducting electrolytes are useful for oxygen separation and high temperature fuel cells.
- sealing In a planar design, a gas-tight seal must bond the components together and prevent the mixing of the gas species on both sides of the solid oxide ion conducting electrolyte.
- a limited number of materials are suitable as a solid oxide ion conducting electrolyte.
- the most commonly used materials are yttria stabilized zirconia (YSZ), doped ceria, doped bismuth oxide and doped lanthanum gallate.
- the thermal expansion coefficient of these materials can range from 10.1 x 10 "6 to 14.3 x 10 "6 °C ⁇ 1 depending on the type of dopant and concentration.
- the operating temperature can also range from 700°C to 1000°C depending upon which material is chosen as the electrolyte. Therefore, the seal material must be tailored to match the electrolyte thermal expansion, maintain a gas tight seal at temperatures ranging from 200 °C to 1200 °C, and not have detrimental chemical interactions with the fuel cell components.
- the seal material must also be stable at the operating temperature (800-1000°C) for extended periods of time (>9,000 hr) and be electrically insulating.
- the seal For a solid oxide fuel cell, the seal must be able to survive extremely reducing environments.
- Silica, boron, and phosphate-based glasses and glass-ceramics have been evaluated as a sealing material 1"4 for solid oxide fuel cells. Experiments conducted by P.H. Larsen et al 1 have shown major problems with glasses purely based on phosphate as the glass former.
- the phosphate volatilized and reacted with the anode to form nickel phosphide and zirconiumoxyphosphate. Additionally, these phosphate glasses usually crystallized to form meta- or pyrophosphates, which exhibited low stability in a humidified fuel gas at the operating temperature.
- Borosilicate glasses and glass ceramics have also been considered as potential seal materials. These glasses have been investigated by C. G ⁇ nther et al 2 and K.L. Ley et al 3 for use in solid oxide fuel cells. However, boron will react with a humidified hydrogen atmosphere to form the gaseous species B (OH) 2 and B 2 (OH) 3 at the operating temperature 2 . Therefore, any high boron seal may corrode in a humidified hydrogen environment over time. Glasses with B 2 O 3 as the only glass former have showed up to a 20% weight loss in the humidified hydrogen environment and extensive interactions with fuel cell component materials both in air and wet fuel gas. 1
- Silica-based glasses and glass-ceramics offer the most promise. They typically have a higher chemical resistance and show minimal interaction with the fuel cell component materials. 1 Unfortunately, these glasses tend to have thermal expansions below the range needed for a sealing material. At the operating temperature, most glasses will crystallize with time. Therefore, it is critical to have a glass composition in which the thermal expansion coefficient after crystallization is compatible with the solid oxide ion conducting electrolyte. Once the glass is fully crystallized, it is typically very stable over time. In addition, crystallized glasses tend to be stronger mechanically at operating temperature, improving seal performance.
- the present invention is a glass-ceramic compound and method of making that are useful in joining or sealing ceramic components to other ceramic components, to metal components, or to combinations thereof (e.g., cermet components). More specifically, the present invention is useful for joining/sealing in an electrochemical cell having at least one solid electrolyte having a first and second side exposed to first and second gas species respectively. The seal is necessary for separating the first and second gas species.
- the glass-ceramic compound contains at least three metal oxides, M1- M2-M3. M1 is BaO, SrO, CaO, MgO, or combinations thereof. M2 is AI 2 O 3 and is present in the compound in an amount from 2 to 15 mol%. M3 is SiO 2 with up to 50 mol% B 2 O 3 .
- the compound substantially matches a coefficient of thermal expansion of the solid ceramic component and at least one other solid component that is either ceramic, metal, or a combination thereof.
- a series of glass ceramics in the M1- AI 2 O 3 -M3 system can be used to join or seal both tubular and planar ceramic solid oxide fuel cells, oxygen electrolyzers, and membrane reactors for the production of syngas, commodity chemicals and other products.
- An advantage of a joint/seal made with the compound of M1-AI 2 O 3 -M3 is the maintaining of a substantially constant coefficient of thermal expansion from the glass to crystalline phase.
- FIG. 1 is a phase diagram showing the compositional range of the M1- AI 2 O 3 -M3 joint/seal material according to the present invention.
- FIG. 2 is a graph of coefficient of thermal expansion versus temperature for a solid electrolyte and the glass-ceramic material of the present invention. DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
- the present invention is a glass-ceramic compound and method of making the glass-ceramic compound.
- the present invention is useful for joining or sealing between at least two solid ceramic parts, for example a seal in an electrochemical cell having at least one solid electrolyte having a first and second side exposed to first and second gas species respectively.
- the present invention is also useful for joining or sealing between a solid ceramic component and a metal component or a cermet component. The seal is necessary for separating the first and second gas species during operation, usually at elevated temperatures.
- the present invention includes a joint between a solid ceramic component and at least one other solid component that is preferably a solid ceramic component, a metal component, or a combination thereof such as a cermet component.
- the joint has at least three metal oxides of M1-M2-M3.
- M1 is BaO, SrO, CaO, MgO, or combinations thereof.
- M2 is AI 2 O 3 .
- M3 is SiO 2 with up to 50 mol% B 2 O 3 .
- the joint substantially matches a coefficient of thermal expansion of the components comprising the joint.
- the coefficient of thermal expansion of the joint is from about 7 x 10 "6 °C "1 to about 15 x 10 "6 °C "1 as measured from 25 °C to 1000 °C.
- composition of the joint/seal is preferably in the range wherein M1 is present in an amount from about 20 mol% to about 55 mol%, AI 2 O 3 is present in an amount from about 2 mol% to about 15 mol%, and M3 is present in an amount from about 40 mol% to about 70 mol%.
- the compositional range for the M1- AI 2 O 3 -M3 system is shown in FIG. 1.
- the glass-ceramic compound may further contain at least one additional metal oxide including, but not limited to, ZrO 2 , TiO 2 , Cr 2 O 3 , and combinations thereof to modify the properties of the glass phase or the final crystallized seal.
- Properties include, but are not limited to, wetting, glass transition temperature (Tg), glass softening temperature (Ts), thermal expansion coefficient, and combinations thereof.
- Tg glass transition temperature
- Ts glass softening temperature
- thermal expansion coefficient and combinations thereof.
- the range of thermal expansion coefficients for both glass-ceramic and crystallized glass-ceramic is from 7 X 10 "6 to 13 X 10 "6 °C "1 .
- the glass transition temperatures (Tg) and softening temperature (Ts) for the glass-ceramics are in the range of 650° - 800°C. However, the crystallized glass-ceramic has a softening temperature above 1000 °C.
- Substantially the same coefficient of thermal expansion is herein defined as the coefficient of thermal expansion of the seal material within about 30%, preferably within about 16%, more preferably within about 5% of the sealed material.
- the joint may be used in an electrochemical test cell to join an oxygen ion pump and a test material.
- the joint may be used in an oxygen generator or a fuel cell to join an oxygen ion conducting electrolyte, for example a zirconia electrolyte, and an interconnect, for example manganite, chromite, metal, and combinations thereof.
- a method of joining a solid ceramic component with at least one other solid component has the steps of:
- M1 is BaO, SrO, CaO, MgO, or combinations thereof.
- AI 2 O 3 is present in the blend in an amount from 2 to 15 mol%.
- M3 is SiO 2 with up to 50 mol% B 2 O 3 ;
- the major crystallized phases can include BaO • 2SiO 2 , 2BaO • 3SiO 2 , BaO • SiO 2 , and BaO • Al 2 0 3 • 2Si0 2 .
- FIG. 2 illustrates how well the glass-ceramic material was tailored to match a solid electrolyte.
- the solid electrolyte material was 8-YSZ and the glass-ceramic compositions were #9 and #14 (i.e., Glass IDs #9 and #14).
- the thermal expansion of the crystallized glass-ceramic materials was within 0.06% of the expansion of the solid electrolyte material.
- Table E1-2 shows properties of the glass-ceramic material of the present invention. TABLE E1-2. Glass-Ceramic Material Properties
- Seals formed from a glass frit were used to fabricate sealed 8YSZ oxygen pumps.
- a zirconia pump of fully dense small closed end tube and test material of flat plate of 8 mol% stabilized zirconia were sealed together with a mixture of 70 wt% glass-ceramic composition #9 and 30 wt% glass-ceramic composition #14 to assemble an electrochemical test cell.
- the tube was electroded with Pt on both the inside and outside to function as an oxygen pump. Pt leads were connected to the electrodes.
- the pre-assembly was placed in a furnace, heated to 1150°C to seal. The temperature was reduced after sealing to the crystallization temperature and held there until the seal crystallized. After crystallization, the assembly was allowed to cool to room temperature
- the assembly was tested by pumping oxygen out of the sealed assembly and found capable of reaching a partial pressure of oxygen of 1 x 10 "18 atm at 1000 °C.
- An oxygen leak rate of 3.7 x 10 "5 standard cubic centimeters per sec (sees) was calculated from the pumping current. This is adequate for solid oxide fuel cells and oxygen generators.
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- Chemical & Material Sciences (AREA)
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- Ceramic Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Health & Medical Sciences (AREA)
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- Biochemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
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- Molecular Biology (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (AREA)
- Sustainable Energy (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Glass Compositions (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001514265A JP4892149B2 (en) | 1999-07-30 | 2000-07-28 | Glass-ceramic bonding material and bonding method |
DE60025364T DE60025364T2 (en) | 1999-07-30 | 2000-07-28 | CERAMIC COMPOUND MATERIAL AND COMPOUND PROCESS |
AU64980/00A AU6498000A (en) | 1999-07-30 | 2000-07-28 | Glass-ceramic joining material and method of joining |
EP00952248A EP1200371B1 (en) | 1999-07-30 | 2000-07-28 | Glass-ceramic joining material and method of joining |
CA002380101A CA2380101C (en) | 1999-07-30 | 2000-07-28 | Glass-ceramic joining material and method of joining |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/365,343 | 1999-07-30 | ||
US09/365,343 US6430966B1 (en) | 1999-07-30 | 1999-07-30 | Glass-ceramic material and method of making |
US09/562,583 | 2000-05-01 | ||
US09/562,583 US6532769B1 (en) | 1999-07-30 | 2000-05-01 | Glass-ceramic joint and method of joining |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001009059A1 true WO2001009059A1 (en) | 2001-02-08 |
Family
ID=27002875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/020534 WO2001009059A1 (en) | 1999-07-30 | 2000-07-28 | Glass-ceramic joining material and method of joining |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1200371B1 (en) |
AT (1) | ATE315014T1 (en) |
AU (1) | AU6498000A (en) |
CA (1) | CA2380101C (en) |
DE (1) | DE60025364T2 (en) |
ES (1) | ES2254207T3 (en) |
WO (1) | WO2001009059A1 (en) |
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- 2000-07-28 AT AT00952248T patent/ATE315014T1/en not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
ATE315014T1 (en) | 2006-02-15 |
EP1200371A1 (en) | 2002-05-02 |
DE60025364D1 (en) | 2006-03-30 |
DE60025364T2 (en) | 2006-08-03 |
CA2380101A1 (en) | 2001-02-08 |
EP1200371B1 (en) | 2006-01-04 |
CA2380101C (en) | 2009-12-08 |
ES2254207T3 (en) | 2006-06-16 |
AU6498000A (en) | 2001-02-19 |
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