WO2012077733A1 - 大気接合用ろう材、接合体、および、集電材料 - Google Patents
大気接合用ろう材、接合体、および、集電材料 Download PDFInfo
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- WO2012077733A1 WO2012077733A1 PCT/JP2011/078360 JP2011078360W WO2012077733A1 WO 2012077733 A1 WO2012077733 A1 WO 2012077733A1 JP 2011078360 W JP2011078360 W JP 2011078360W WO 2012077733 A1 WO2012077733 A1 WO 2012077733A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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 degrees C
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- 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
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
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- 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
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- 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
- C04B37/026—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
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- H—ELECTRICITY
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
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- H—ELECTRICITY
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- H01M8/00—Fuel cells; Manufacture thereof
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- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
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- H—ELECTRICITY
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- 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
- H01M8/0215—Glass; Ceramic materials
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- 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
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- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
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- H—ELECTRICITY
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- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
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- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
- B23K2103/05—Stainless steel
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/26—Alloys of Nickel and Cobalt and Chromium
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/52—Ceramics
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- 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
- C04B2237/12—Metallic interlayers
- C04B2237/125—Metallic interlayers based on noble metals, e.g. silver
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- 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
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- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
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- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
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- 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
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- 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
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a brazing material for air bonding, and a joined body and a current collecting material that are bonded by using the brazing material, and particularly relates to lowering the melting point and improving high-temperature durability of a brazing material for air bonding.
- a joined body of metal members, a joined body of ceramic members, and a joined body of a ceramic member and a metal member are obtained by brazing.
- the joining method is actively researched.
- a flux brazing method which is a general method for brazing in the air.
- a good bonded body is obtained by applying a flux to the bonding surface of the base material to obtain a reducing atmosphere at the bonded portion by the flux and blocking oxygen entry.
- a flux having a melting point lower than 780 ° C. which is the melting point of BAg-8 is used as the brazing material, and the flux is melted before the brazing material.
- a good joined body is obtained by activating the joint surface and preventing oxidation of the brazing material.
- bonding is usually performed by local heating using a torch or the like, and this method is effective for point bonding and line bonding, but is not suitable for surface bonding.
- the ceramic member may be broken by a thermal stress generated by local heating, which is not suitable for manufacturing a bonded body having a ceramic member.
- many fluxes themselves and their residues have the effect of corroding metals, and in this case, a separate flux residue removal step is required after joining.
- Patent Documents 1 and 2 it is conceivable to use a reactive air brazing method as an air brazing technique that does not require flux (for example, Patent Documents 1 and 2).
- a reactive atmosphere using an Ag—Cu brazing material in which CuO is added to Ag using a ceramic member and a heat-resistant metal member that forms an Al oxide layer in the atmosphere as a base material.
- the base materials are joined to the atmosphere by brazing.
- the main component of the brazing material is a noble metal component such as Ag, the flux is not necessary for brazing, and as a result, the above-mentioned problem due to the flux can be solved.
- Patent Document 3 proposes a brazing material made of an Ag—Ge—Si based alloy.
- the Ag—Ge—Si brazing material of Patent Document 3 does not melt at a temperature lower than the melting point of Ag, the above-described problem caused by the reactive atmospheric brazing method cannot be solved.
- the joined body using the low melting point air-bonding brazing material is inferior in high-temperature durability.
- a brazing material for low-melting-point air bonding a bonded body obtained by bonding in the air at a heating temperature of 850 ° C. for 1 hour is subjected to a leak test after being held in the air at a heating temperature of 800 ° C. for 100 hours. And a leak will arise from a junction part. In this case, the cause of leakage may be volatilization of the low melting point oxide.
- an object of the present invention is to provide a brazing material for atmospheric bonding that can be melted at a melting point of Ag or lower and can improve the high-temperature durability of the joined body.
- Another object of the present invention is to provide a joined body and a current collecting material obtained by joining using such a brazing material and having high-temperature durability.
- the brazing material for air bonding according to the present invention contains Ag (silver), Ge (germanium), B (boron), and Si (silicon) as essential components, and the total volume ratio of constituent elements other than Ag is 50%. It is set to be over 90% and the proportion of Si in the content of constituent elements other than Ag is set to more than 22% by volume, and the proportion of B in the content of constituent elements other than Ag is The volume ratio is set to more than 14%.
- the brazing material for air bonding of the present invention is an Ag—B—Si brazing material containing Ag, B, and Si as essential components.
- Ag is a material that is not easily oxidized even when melted in the atmosphere
- B is a low-melting-point material that is oxidized at about 300 ° C. or higher
- the melting point of the oxide is relatively low (about 577 ° C.). It is.
- the brazing material can be melted at a melting point of Ag (about 961 ° C.) or less by containing B, which is a low melting point material, as an essential component.
- the bonding temperature is lower than that of the conventional Ag-based air bonding brazing material, so when using a metal member as the base material, it is possible to suppress oxidation of the base material and prevent deterioration of the metal member side. can do.
- the joining temperature is low as described above, it is possible to reduce thermal stress due to a difference in thermal expansion coefficient between the two members.
- the brazing material for air bonding according to the present invention contains Ag, B, and Si as essential components, and the content of each constituent element other than Ag is set as described above. Improvements can be made. For example, even if a leak test is performed after holding the bonded body at a heating temperature of 800 ° C. for 100 hours in the atmosphere, no leakage from the bonded portion occurs and good airtightness can be maintained. Therefore, long-term reliability can be ensured.
- the air brazing filler metal of the present invention can have various configurations. For example, at least one of Ge (germanium), Ti (titanium), Zr (zirconium), Hf (hafnium), Cr (chromium), and Al (aluminum) is added as an additive component, and a configuration other than Ag A mode in which the proportion of the additive component in the content of the element is set to be less than 64% by volume can be used.
- a ceramic member is used as the base material, the reactivity with ceramics can be improved when Ge, Ti, Zr, or Hf is added.
- Ge oxide can be deposited on the ceramic by adding Ge, and Ge has an action as an active metal, so that the wettability can be improved. it can.
- Cr and Al when Cr and Al are added, an effect of suppressing diffusion of oxygen in the brazing material at the time of air bonding or holding at a high temperature can be obtained, so that the oxidation resistance can be improved.
- brazing material for air bonding according to the present invention when the brazing material for air bonding according to the present invention is applied to bonding between members, an aspect in which an oxide containing at least one of the constituent elements is formed by the bonding can be used. Moreover, when the brazing material for air bonding according to the present invention is applied to bonding of members, a mode in which a composite oxide containing at least two of the constituent elements is formed by the bonding can be used.
- the brazing filler metal for air bonding of the present invention can have a low melting point as described above, and can have a melting point of 650 ° C. or higher and 850 ° C. or lower, for example, in the air.
- the joined body of the present invention can be obtained by joining using the above brazing material for atmospheric joining. That is, the joined body of the present invention is composed of metal members joined using the above brazing material for atmospheric joining, ceramic members, or a metal member and a ceramic member, and has gas sealing properties. .
- the joined body can be used for a fuel cell or a solid oxide fuel cell.
- the current collecting material of the present invention is characterized in that it is composed of metal members joined together using the above-mentioned brazing filler for atmospheric bonding, ceramic members, or a metal member and a ceramic member, and has electrical conductivity.
- the current collecting material can be used for a fuel cell or a solid oxide fuel cell.
- the brazing material for air bonding of the present invention it is possible to obtain effects such as melting at a melting point of Ag or less and improving the high temperature durability of the bonded body.
- the joined body or current collecting material of the present invention it can be obtained by using the brazing material for air bonding of the present invention, and has high-temperature durability as well as good airtightness and bonding strength. it can.
- FIG. 1 It is a perspective view showing schematic structure of the joining test piece produced in the Example of this invention. It is a figure showing the side cross-section structure in the arrow direction 1A of FIG. 1 showing the joining test piece for cross-sectional observation used in the Example of this invention. It is a cross-sectional electron micrograph (* 500 time) of the joining test piece after joining of the sample 4 of this invention. It is a cross-sectional electron microscope figure (x500 times) of the joining test piece after the high temperature holding of the sample 4 of this invention. 2 is a cross-sectional electron micrograph ( ⁇ 500 times) of a bonded test piece after bonding of a comparative sample 2. FIG. It is a cross-sectional electron microscope figure (x500 times) of the joining test piece after the high temperature holding of the comparative sample 2.
- a bonded specimen was prepared as a sample according to the present invention using a brazing material for atmospheric bonding within the scope of the present invention.
- the joining body test piece was produced as a comparative sample using the brazing material for atmospheric joining outside the scope of the present invention.
- a leak test was performed on all the specimens, and a joint portion was observed on some of the specimens.
- sample and comparative sample As the form of the brazing material for air bonding that can be used in the preparation of the sample of the present invention, for example, a form in which a metal mixed powder is pasted with an organic solvent, an organic binder or the like, or an alloy powder paste
- various forms such as a foil and a sol-gel are exemplified, and the present invention is not particularly limited.
- Examples of the metal member material that can be used in the sample preparation of the present invention include ferritic stainless steel, stainless steel, heat resistant stainless steel, FeCrAl alloy, FeCrSi alloy, Ni-based heat resistant alloy, and the like. Absent.
- Examples of the material of the ceramic member used in the sample preparation of the present invention include yttria-stabilized zirconia and oxide ceramics such as zirconia, alumina, magnesia, steatite, mullite, titania, silica, and sialon, and are particularly limited. It is not something.
- the brazing material for air bonding As the brazing material for air bonding according to each sample of the present invention, a paste obtained by mixing a mixed metal powder having a composition within the scope of the present invention shown in Table 1 with an organic binder was used.
- sample 1 uses the air bonding brazing material (Ag-B-Si brazing material) within the scope of the present invention containing only the essential components, and samples 2 and 4 have the essential components.
- an air bonding brazing material (Ag—B—Si—Ge based brazing material) containing Ge as an additive element within the scope of the present invention was used.
- Ge and Cr were added as additive elements in addition to the essential components.
- the brazing material for air bonding (Ag-B-Si-Ge-Cr-based brazing material) within the scope of the present invention containing selenium was used.
- the total volume ratio of the constituent elements other than Ag is expressed as the content ratio X.
- the B content in the content ratio X is the ratio of B to the content of the constituent elements other than Ag. Is shown. Numerical values shown in Table 1 are expressed in volume ratio (unit:%).
- a stabilized zirconia plate made of yttria stabilized zirconia (3YSZ) was used as the ceramic member according to each sample of the present invention. The size of the plate was set to 20 mm ⁇ 20 mm.
- a mixed metal powder having a composition outside the range of the present invention shown in Table 1 and mixed with an organic binder to form a paste is used.
- a stabilized zirconia plate was used as the ceramic member.
- the comparative sample 1 uses an air bonding brazing material whose content X is outside the range of the present invention (50% or less), and the comparative sample 2 has a Si content of X in the content X.
- An air bonding brazing material outside the scope of the invention (22% or less) was used, and the comparative sample 3 uses a brazing material for air bonding whose B content is outside the scope of the present invention (14% or less). It was.
- a paste-like air bonding brazing material is applied to one end surface of a metal member, a ceramic member is placed on the applied surface, the heating temperature is set to 850 ° C. in the air, and bonding is performed for 1 hour.
- FIG. 1 is a schematic diagram showing the configuration of the produced joint test piece 10.
- Reference numeral 11 denotes a metal member that is a cylindrical member
- reference numeral 11A denotes an opening of the metal member
- reference numeral 12 denotes a ceramic member that is a plate member
- reference numeral 13 denotes a bonding layer.
- FIG. 2 is a schematic diagram of an observation cross section of a bonding portion including the bonding layer 13 (a perspective view illustrating a side cross sectional configuration in the arrow direction 1A of FIG. 1).
- Comparative Sample 2 using the brazing material for air bonding helium was detected after holding at a high temperature, and leakage occurred.
- Comparative Sample 3 using the brazing material for atmospheric bonding whose B content in the content ratio X is outside the range of the present invention helium was detected in the case after bonding, and leakage occurred.
- Comparative Sample 2 in the bonded test piece after bonding in which no leakage occurred, as can be seen from FIG. 5, Ag rich portion 14 and composite oxide 15 were observed, and no void was observed. As can be seen from FIG. 6, the composite oxide 15 was not observed and the pores 16 were observed in the bonding test piece after holding at high temperature where leakage occurred. On the other hand, in sample 4, the Ag rich portion 14 and the composite oxide 15 are observed in the bonding test pieces after the bonding where no leakage occurred and after the high temperature holding, as can be seen from FIGS. Not observed.
- the brazing material for air bonding contains Ag, B, and Si as essential components in order to have good airtightness and high temperature durability, It was confirmed that the total volume ratio of the constituent elements other than Ag was required to be set in the range of more than 50% and 90% or less. In this case, from the comparison between sample 1 and comparative sample 2, the proportion of Si in the content of constituent elements other than Ag is set to a volume ratio exceeding 22%. It was confirmed that the proportion of B in the constituent elements other than Ag was required to be set to more than 14% by volume.
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Abstract
Description
本発明の試料作製で用いることができる大気接合用ろう材の形態としては、たとえば金属混合粉末を有機溶剤や有機バインダー等によりペーストとした形態や、合金粉末ペーストや、箔、ゾルゲル等の各種形態が挙げられ、特に限定されるものではない。
まず、接合後の接合試験片10について、金属部材11の開口面11Aを閉塞し、金属部材11内部を真空排気して、ヘリウムリーク試験を行った。次いで、大気中において、加熱温度を800℃に設定し、接合試験片10を100時間保持した後に、そのような高温保持後の接合試験片10について、上記と同様にヘリウムリーク試験を行った。その結果を表1に示す。試験結果について、表1では、ヘリウムが検出されなかったものを“○”、ヘリウムが検出されたものを“×”と表記している。接合後の接合試験片10の試験でヘリウムが検出されたものは、高温保持後の接合試験片10について試験を行わなかった。また、試料4および比較試料2については、接合試験片10を中央部で切断し、接合層13を含む接合部を観察した。
Claims (9)
- Ag、B、および、Siを必須成分として含有し、
Ag以外の構成元素の体積比の合計が50%超90%以下に設定され、
Ag以外の前記構成元素の含有量のなかにSiが占める割合が体積比で22%超に設定され、
Ag以外の前記構成元素の含有量のなかにBが占める割合が体積比で14%超に設定されていることを特徴とする大気接合用ろう材。 - Ge、Cr、Al、Ti、Zr、および、Hfのうちの少なくとも一種が添加成分として添加され、
Ag以外の構成元素の含有量のなかに前記添加成分が占める割合が体積比で64%未満に設定されていることを特徴とする請求項1に記載の大気接合用ろう材。 - 部材同士の接合に適用された場合、その接合で構成元素のうちの少なくとも1種を含む酸化物が形成されることを特徴とする請求項1または2に記載の大気接合用ろう材。
- 部材同士の接合に適用された場合、その接合で構成元素のうちの少なくとも2種を含む複合酸化物が形成されることを特徴とする請求項1~3のいずれかに記載の大気接合用ろう材。
- 大気中において650℃以上850℃以下の融点を有することを特徴とする請求項1~4のいずれかに記載の大気接合用ろう材。
- 請求項1~5のいずれかに記載の大気接合用ろう材を用いて接合された金属部材同士、セラミックス部材同士、あるいは、金属部材とセラミックス部材からなるとともに、ガスシール性を有することを特徴とする接合体。
- 燃料電池用あるいは固体酸化物型燃料電池用として使用されることを特徴とする請求項6に記載の接合体。
- 請求項1~5のいずれかに記載の大気接合用ろう材を用いて接合された金属部材同士、セラミックス部材同士、あるいは、金属部材とセラミックス部材からなるとともに、電気伝導性を有することを特徴とする集電材料。
- 燃料電池用あるいは固体酸化物型燃料電池用として使用されることを特徴とする請求項8に記載の集電材料。
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EP11846727.3A EP2650077A4 (en) | 2010-12-09 | 2011-12-01 | BRASURE MATERIAL FOR ATMOSPHERE BONDING, BRAZED OBJECT, AND CURRENT COLLECTOR MATERIAL |
KR1020137017785A KR20130136505A (ko) | 2010-12-09 | 2011-12-01 | 대기 접합용 납재, 접합체 및 집전 재료 |
US13/991,504 US20130260285A1 (en) | 2010-12-09 | 2011-12-01 | Brazing material for bonding in atmosphere, bonded article, and current collecting material |
CN201180058996.6A CN103249520B (zh) | 2010-12-09 | 2011-12-01 | 大气接合用钎料、接合体以及集电材料 |
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US20130260285A1 (en) | 2013-10-03 |
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