WO2016060057A1 - Structure en céramique et procédé et dispositif pour la production de celle-ci - Google Patents

Structure en céramique et procédé et dispositif pour la production de celle-ci Download PDF

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Publication number
WO2016060057A1
WO2016060057A1 PCT/JP2015/078606 JP2015078606W WO2016060057A1 WO 2016060057 A1 WO2016060057 A1 WO 2016060057A1 JP 2015078606 W JP2015078606 W JP 2015078606W WO 2016060057 A1 WO2016060057 A1 WO 2016060057A1
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Prior art keywords
porous ceramic
ceramic member
spacers
pastes
plane
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PCT/JP2015/078606
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English (en)
Japanese (ja)
Inventor
祐基 藤田
真也 続石
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イビデン株式会社
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Publication of WO2016060057A1 publication Critical patent/WO2016060057A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • 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

Definitions

  • the present invention relates to a ceramic structure used as a filter for removing particulates and the like in exhaust gas discharged from an internal combustion engine, and a method and apparatus for manufacturing the same.
  • the porous ceramic members constituting these ceramic filters usually have a large number of through holes arranged in parallel in one direction, and a partition wall separating the through holes functions as a filter.
  • the through-hole formed in the porous ceramic member is sealed with a filler on either the inlet side or the outlet side of the exhaust gas, and the exhaust gas flowing into one through-hole is always passed through the through-hole.
  • the gas flows out from other through holes.
  • a ceramic molded body is produced by performing extrusion molding or the like of the mixed composition.
  • a porous ceramic member is manufactured through a degreasing process for thermally decomposing a binder and the like in the ceramic molded body and a firing process for firing the ceramic.
  • a ceramic structure is manufactured by binding a plurality of these porous ceramic members through an adhesive layer to form a ceramic block, cutting the ceramic block into a predetermined shape, and providing a sealing body on the outer periphery of the ceramic block.
  • a technique in which a spacer is sandwiched between the porous ceramic members to maintain a constant interval between the plurality of ceramic members to be bound (See Patent Document 1 below).
  • positioning is performed using a height reference jig so that the flatness of the spacer upper surface after the spacer is mounted on the porous ceramic member is increased, and the non-solidified spacer forming agent is solidified to a predetermined height.
  • a technique for forming the spacer is provided (see Patent Document 2 below).
  • FIG. 1 is a side view of the case where there is a warp in the longitudinal direction of the porous ceramic member 20 in FIG. 1A as a case where the flatness is low
  • FIG. 1B is a spacer mounting surface of the porous ceramic member 20
  • FIG. 1 (c) shows a front view when 20a is raised in a convex shape
  • FIG. 1 (c) shows a front view when the spacer mounting surface 20a of the porous ceramic member 20 is depressed in a concave shape
  • FIG. 1D is an enlarged view of the vicinity of the spacer 13 when the spacer mounting surface 20a of FIG.
  • the flatness of the spacer mounting surface 20a when the flatness of the spacer mounting surface 20a is low, the flatness of the flat surface 101 defined by the upper surface of the spacer 13 parallel to the spacer mounting surface 20a is also low. For this reason, the porous ceramic member 20 adjacent in parallel to the spacer mounting surface 20a with low flatness is mounted, and the thickness of the adhesive layer of the completed ceramic structure may vary.
  • FIG. 2A is a side view when the longitudinal direction of the porous ceramic member 20 is warped
  • FIG. 2B is a front view when the spacer mounting surface 20a of the porous ceramic member 20 is raised in a convex shape
  • FIG. 2 (c) shows a front view when the spacer mounting surface 20a of the porous ceramic member 20 is depressed in a concave shape
  • FIG. 2D is an enlarged view of the vicinity of the spacer 15 when the spacer mounting surface 20a of FIG.
  • the flatness of the flat surface 103 defined by the upper surface of the spacer 15 is high, and the height L of the upper surface of the spacer 15 including the porous ceramic member 20 is constant. It is kept in. In this case, as shown in FIG. 2D, the flatness of the plane defined by the upper surface of the spacer 15 is kept high regardless of the spacer mounting surface 20a having a low flatness.
  • the completed ceramic structure Variations in the thickness of the body adhesive layer may occur.
  • This invention is proposed in view of the above-described circumstances, and even when there is a deviation in the perpendicularity of the porous ceramic member, the thickness of the adhesive layer that binds the plurality of porous ceramic members is uniform. It is an object of the present invention to provide a ceramic structure and a manufacturing method and apparatus therefor.
  • the ceramic structure of the present invention includes a plurality of prismatic porous ceramic members in which a plurality of through holes are arranged in parallel in the longitudinal direction with a partition wall interposed therebetween, and are bonded through an adhesive layer.
  • a plurality of first spacers which are ceramic structures and are formed between the porous ceramic members on a first side surface of the porous ceramic member and which define a first plane facing the first side surface
  • a plurality of second spacers that are formed on the second side surface of the porous ceramic member, face the second side surface, and define a second plane perpendicular to the first plane.
  • the porous ceramic member can be assembled vertically, and the adhesive layer
  • the ceramic structure has a uniform thickness. Therefore, variations in heat transfer and adhesive strength due to the adhesive layer are reduced, and damage can be prevented.
  • the height of the first and second spacers is 0.2 to 1.5 mm.
  • the height of the spacer corresponds to the distance from the portion where the spacer is formed on the first and second side surfaces of the porous ceramic member to the first and second planes.
  • the first and second spacers are preferably formed at four or more locations on the first and second side surfaces, respectively.
  • the porous ceramic members are stacked in the normal direction of the first and second planes.
  • the shape of the aggregate of the porous ceramic members after stacking can be set to a target shape.
  • the method for manufacturing a ceramic structure according to the present invention is a method for manufacturing a ceramic structure in which a plurality of prismatic porous ceramic members each having a plurality of through holes arranged in parallel in the longitudinal direction with a partition wall therebetween are bound via an adhesive layer.
  • a plurality of first spacers defining a first plane facing the first side surface are formed on a first side surface of the porous ceramic member, and a first side of the porous ceramic member is formed.
  • the step of forming the plurality of first and second spacers includes a step of supplying a plurality of first and second pastes to the first and second side surfaces.
  • the first and second planes are set by first and second reference surfaces facing the first and second side surfaces, and the plurality of first and second pastes are solidified to form the plurality of the plurality of first and second paste surfaces.
  • the step of solidifying the plurality of first and second pastes is to thermally cure the plurality of first and second pastes.
  • the paste can be solidified in a short time.
  • the porous ceramic member In the step of supplying the plurality of first and second pastes, it is desirable to supply the porous ceramic member with the first and second side surfaces facing upward from above. It is possible to prevent the paste from dripping and the spacer thickness from becoming thinner than intended.
  • the step of solidifying the plurality of first and second pastes includes a step of first and second with respect to the porous ceramic member with the first and second side surfaces facing upward. It is desirable to bring the second reference plane closer from above. It is possible to prevent the paste from dripping and the spacer thickness from becoming thinner than intended.
  • the step of solidifying the plurality of first and second pastes is a step of rotating the porous ceramic member so that the first and second side faces are directed downward. It is desirable that the first and second reference planes be approached from below with respect to the porous ceramic member having the first and second side surfaces facing downward.
  • the porous ceramic members on which the first and second spacers are formed are stacked and bound in the normal direction of the first and second planes.
  • the adhesive layer has a uniform thickness and can be stacked vertically.
  • the apparatus for manufacturing a ceramic structure of the present invention is a method for manufacturing a ceramic structure in which a plurality of prismatic porous ceramic members each having a number of through holes arranged in parallel in the longitudinal direction with a partition wall therebetween are bound together via an adhesive layer.
  • a plurality of first and second spacers formed by solidifying a plurality of first and second pastes supplied to the first and second side surfaces of the porous ceramic member are orthogonal to each other.
  • first and second reference plane providing means that are orthogonal to each other, even if the porous ceramic member has deformation such as warping or deviation of squareness, the first side face and the second side face are provided.
  • Virtual first and second planes can be made that go straight through the spacers to oppose. Therefore, it is possible to obtain a ceramic structure having a uniform adhesive layer thickness.
  • the reference surface providing means is provided with a heater for thermosetting the plurality of first and second pastes. It becomes possible to solidify the paste in a short time by the heater.
  • the manufacturing apparatus of the present invention includes paste supply means for supplying a plurality of first and second pastes to the first and second side surfaces of the porous ceramic member.
  • the paste supply means facilitates the supply of paste.
  • the manufacturing apparatus of the present invention further includes a supporting means for supporting the porous ceramic member with the first and second side surfaces facing upward, wherein the reference surface providing means is configured by the paste supplying means. It is desirable that the first and second reference planes are brought close to the first and second side surfaces on which the second paste is mounted from above. Since the spacer can be solidified with the porous ceramic member fixed, deviation can be prevented.
  • the manufacturing apparatus of the present invention further includes an interval setting unit that sets a minimum interval between the support unit and the reference surface providing unit. It is possible to achieve the target spacer height by the interval setting means.
  • the manufacturing apparatus of the present invention further includes gripping means for gripping the porous ceramic member, and the gripping means includes the first and second porous ceramic members with the first and second side faces downward. It is desirable that the reference surface 2 is close to the reference surface providing means installed below with the reference surface facing upward. The support means is unnecessary, and a simple device can be obtained.
  • the gripping means grips the porous ceramic member with the first and second side surfaces to which the first and second pastes are supplied by the paste supply means facing upward, It is desirable that the first side surface and the second side surface be rotated downward so as to be close to the reference surface providing means. The support means is unnecessary, and a simple device can be obtained.
  • the thickness of the adhesive layer that binds the plurality of porous ceramic members is uniform, so heat transfer between the porous ceramic members is uniform. It is possible to prevent damage and the like from occurring. Moreover, it can be assembled neatly with a simple manufacturing method and manufacturing apparatus.
  • FIG. It is a figure explaining the technique described in patent document 1.
  • FIG. It is a figure explaining the technique described in patent document 2.
  • FIG. It is the perspective view which showed the embodiment of the ceramic structure typically.
  • (A) is the perspective view which showed typically the porous ceramic member provided with the spacer which comprises a ceramic structure
  • (b) is the AA sectional view.
  • (A) It is a figure explaining the spacer formation apparatus which forms the some 1st and 2nd spacer to the side surface of a ceramic member.
  • (B) It is a figure explaining an interval setting means. It is a figure explaining the assembly of the ceramic structure by a porous ceramic member. It is a figure which shows the structure of another spacer formation apparatus.
  • FIG. 3 (a) and 3 (b) are perspective views schematically showing an embodiment of the ceramic structure
  • FIG. 4 (a) schematically shows a porous ceramic member constituting the ceramic structure
  • FIG. 4B is a cross-sectional view taken along the line AA
  • FIG. 5 is a perspective view showing the state of first and second planes facing the first and second side surfaces of the porous ceramic member constituting the ceramic structure.
  • a plurality of through holes 21 are formed in the porous ceramic member 20 constituting the ceramic structure, and one end of the porous ceramic member 20 having these through holes 21 is formed in a checkered pattern.
  • the pattern is filled with a filler 22. Further, at the other end not shown, the filler is filled in the through hole 21 whose one end is not filled with the filler.
  • FIG. 3A shows a ceramic structure 10 in which a plurality of porous ceramic members 20 shown in FIG. 4 are bundled
  • FIG. 3B shows the porous ceramic member shown in FIG.
  • a ceramic structure 10 ′ in which the outer periphery of 20 ceramic structures 10 that are bundled is processed into a cylindrical shape is shown.
  • 3A and 3B the through-hole 21 formed in the porous ceramic member 20 is omitted.
  • a plurality of porous ceramic members 20 are bound via an adhesive layer 11, and the adhesive layer 11 has a first side surface 20 a on the first side surface 20 a as shown in FIG. 5.
  • a plurality of first spacers 18 that define a first plane 25a facing one side surface 20a are provided, and a second side surface 20b adjacent to the first side surface 20a is opposed to the second side surface 20b.
  • a plurality of second spacers 19 defining a second plane 25b orthogonal to the first plane 25a are provided.
  • the plurality of first spacers 18 and the plurality of second spacers 19 are formed such that the porous ceramic member 20 has a predetermined height with respect to the first plane 25a and the second plane 25b. Yes.
  • the plurality of first spacers 18 and the plurality of second spacers 19 are sandwiched between porous ceramic members 20 adjacent to each other in the normal direction of the first plane 25a and the second plane 25b. Further, the outer peripheral portion of the porous ceramic member 20 which is bundled through the adhesive layer 11, the plurality of first spacers 18 and the plurality of second spacers 19 is circular as shown in FIG.
  • the ceramic structure 10 ′ is formed by processing into a columnar shape and coating the sealing material 12.
  • the shape of the ceramic structure 10 is not particularly limited, and may be a prismatic shape as shown in FIG. 3A, a cylindrical shape as shown in FIG.
  • the large number of through-holes 21 constituting the ceramic structure 10 are filled with the filler 22 only at one end portion, so that one through-hole is opened.
  • Exhaust gas that has flowed in from one end of 21 always passes through a porous partition wall 23 that is separated from the adjacent through hole 21, and flows out through the other through hole 21.
  • the partition wall 23 the particulates in the exhaust gas are captured by the partition wall 23.
  • the plurality of first spacers 18 and the plurality of second spacers 19 have low flatness on the side surfaces of the porous ceramic member 20 or misalignment between the squareness of adjacent side surfaces of the porous ceramic member 20 in the shape of a prism. In this case, it is provided to maintain the gap between the porous ceramic members 20, and can be supplied as a paste from a paste supply device 60 described later and solidified in a spacer forming device.
  • the material is not particularly limited, and examples thereof include inorganic substances and resins, but those that are not decomposed or removed by heating when the ceramic structure 10 is used are preferable. This is to prevent the adhesive layer 11 from being corroded by the gas generated when being decomposed and removed. However, even if decomposed and removed by heating, any substance that does not generate corrosive gas can be used.
  • the shape of the plurality of first spacers 18 and the plurality of second spacers 19 is not particularly limited as long as the shape can hold the porous ceramic member 20, and has a cylindrical shape as shown in FIG. 5. It may be a prismatic shape.
  • the thickness is preferably 0.2 to 1.5 mm. If the thickness is less than 0.2 mm, the adhesive layer 11 becomes too thin, the flatness of the side surface of the porous ceramic member 20 is low, or the squareness of the adjacent side surface of the porous ceramic member 20 is shifted to a perpendicular angle. In some cases, a predetermined interval cannot be secured, and chipping or the like may occur. On the other hand, when the thickness exceeds 1.5 mm, the adhesive layer 11 becomes too thick and heat transfer between the porous ceramic members 20 is deteriorated. Specifically, the porous ceramic member 20 is formed within such a size range so that the porous ceramic member 20 has a predetermined height on the basis of the first side surface 20a and the second side surface 20b by a spacer forming apparatus described later. Is done.
  • the diameters of the plurality of first spacers 18 and the plurality of second spacers 19 are preferably 3.0 to 10.0 mm. When the diameter is less than 3.0 mm, the handleability is inferior, and the interval between the porous ceramic members 20 may not be maintained. On the other hand, if the thickness exceeds 10.0 mm, the adhesive strength of the adhesive layer 11 decreases, and the plurality of first spacers 18 and the plurality of second spacers 19 having such a large diameter are decomposed and removed. In this case, the traces are large, and a gap is generated in the adhesive layer 11 or the adhesive strength and the like are reduced.
  • the material of the porous ceramic member 20 constituting the ceramic structure 10 is not particularly limited and includes various ceramics. Among these, heat resistance is high, mechanical characteristics are excellent, and thermal conductivity is also high. Large silicon carbide is preferred.
  • porous ceramic members 20 preferably have open pores having an average pore diameter of 1 to 40 ⁇ m.
  • the porous ceramic member 20 having such a structure has an average particle size of, for example, about 0.3 to 50 ⁇ m.
  • a combination of 100 parts by weight of silicon carbide powder having a diameter and 5 to 65 parts by weight of silicon carbide powder having an average particle diameter of about 0.1 to 1.0 ⁇ m is fired and sintered.
  • the material which comprises the sealing material 12 is not specifically limited, However, What contains heat resistant materials, such as an inorganic particle, an inorganic fiber, an inorganic binder, is preferable.
  • the sealing material 12 may be made of the same material as the adhesive layer 11 described later.
  • the material constituting the adhesive layer 11 is not particularly limited, and examples thereof include an inorganic binder, an organic binder, inorganic fibers, and inorganic particles.
  • examples of the inorganic binder include silica sol and alumina sol. These may be used alone or in combination of two or more. Of these, silica sol is preferred.
  • organic binder for example, hydrophilic organic polymers are desirable, and polysaccharides are particularly desirable. Specific examples include polyvinyl alcohol, methyl cellulose, ethyl cellulose, carboxymethyl cellulose and the like. Of these, carboxymethylcellulose is preferred. This is because the fluidity at the time of assembling the porous ceramic member 20 is ensured and excellent adhesiveness in a normal temperature region is exhibited.
  • the inorganic fiber examples include silica-alumina ceramic fiber, mullite fiber, alumina fiber, and silica fiber. Of these, alumina fibers are preferred. Such an inorganic fiber can improve the adhesive strength of the adhesive layer 11 by being intertwined with an inorganic binder, an organic binder, or the like.
  • carbide and / or nitride inorganic particles are desirable, and examples thereof include silicon carbide, silicon nitride, and boron nitride. Of these, silicon carbide is preferred. These carbides and nitrides have a very high thermal conductivity and greatly contribute to the improvement of the thermal conductivity of the adhesive layer 11.
  • the adhesive layer 11 may contain a small amount of water or solvent. Such water or solvent is usually bonded. Usually scattered by heating after applying the layer paste.
  • the ceramic structure 10 includes the plurality of first spacers 18 defining the first plane 25a between the porous ceramic members 20 constituting the ceramic structure 10 and the first plane 25a orthogonal to the first plane 25a. Since the plurality of second spacers 19 defining the two planes 25b are sandwiched, and the porous ceramic member 20 based on the first plane 25a and the second plane 25b is set to a predetermined height, The right angle is maintained, and the thickness of the adhesive layer 11 formed between the porous ceramic members 20 becomes uniform. Therefore, the heat transfer due to the thickness variation of the adhesive layer 11 does not occur in the ceramic structure 10, and even if the ceramic structure 10 is repeatedly heated and cooled, thermal stress is generated and cracks occur. There is nothing. Moreover, since the adhesive force of the adhesive layer 11 is uniform, the adhesive strength of the ceramic structure 10 is also excellent.
  • the plane of the first side surface 20a and the second side surface 20b on which the plurality of first spacers 18 and the plurality of second spacers 19 are mounted such that the porous ceramic member 20 constituting the ceramic structure 10 is warped. Even if the degree is low or the perpendicularity formed by the first side surface 20a and the second side surface 20b is shifted, the plurality of first spacers 18 and Since the plurality of second spacers 19 keep the interval of the porous ceramic member 20 constant, the ceramic structure 10 is not chipped or has a variation in heat transfer. Further, as a whole, the plurality of porous ceramic members 20 can be assembled cleanly.
  • the method for manufacturing the ceramic structure is the method for manufacturing the ceramic structure 10 described above, and includes a plurality of first spacers 18 and a plurality of second spacers on the first side surface 20 a and the second side surface 20 b of the porous ceramic member 20. After forming the spacers 19, the process of forming the adhesive layer 11 on the first side surface 20 a and the second side surface 20 b and laminating the other porous ceramic member 20 to assemble the ceramic block Is included.
  • a ceramic molded body is produced.
  • a ceramic powder, a binder, and a dispersion medium liquid are mixed to prepare a mixed composition for forming a molded body, and then this mixed composition is extruded to form a large number of through-holes with partition walls.
  • Columnar ceramic molded bodies arranged in parallel in the longitudinal direction are produced, and then the molded body is dried to evaporate the dispersion medium liquid, thereby producing a ceramic molded body containing ceramic powder and resin. Note that this ceramic molded body may contain a small amount of a dispersion medium liquid.
  • this ceramic molded body is almost the same as that of the porous ceramic member 20 shown in FIG. However, the plurality of first spacers 18 and the plurality of second spacers 19 in FIG. 4 are not formed. In this step, the portion corresponding to the filler 22 is hollow.
  • Examples of the ceramic powder include various ceramics as described in the ceramic structure described above. Among these, silicon carbide having high heat resistance, excellent mechanical properties, and high thermal conductivity is used. preferable.
  • the binder is not particularly limited, and examples thereof include methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, polyethylene glycol, phenol resin, and epoxy resin.
  • the amount of the binder is preferably about 1 to 10 parts by weight with respect to 100 parts by weight of the silicon carbide powder.
  • the dispersion medium liquid is not particularly limited, and examples thereof include organic solvents such as benzene; alcohols such as methanol, water, and the like. An appropriate amount of the dispersion medium liquid is blended so that the viscosity of the resin is within a certain range.
  • a sealing step a step of sealing the through-holes of the produced ceramic molded body into a sealing pattern with a filling paste is performed.
  • the mask formed with the opening in the sealing pattern is brought into contact with the through-hole of the ceramic molded body, and the filling paste is made to enter the through-hole from the opening of the mask.
  • the through hole of the part is sealed.
  • the filling paste is preferably the same as the mixed composition used in the production of the ceramic molded body, or one obtained by further adding a dispersion medium to the mixed composition.
  • a process of thermally decomposing organic components in the ceramic molded body produced by the above process is performed.
  • the ceramic molded body is usually placed on a degreasing jig, then carried into a degreasing furnace, and heated to 400 to 650 ° C. in an oxygen-containing atmosphere.
  • organic components such as a binder, volatilize, it decomposes
  • a firing process a process of placing the degreased ceramic compact on a firing jig and firing it is performed.
  • the ceramic molded body degreased at 2000 to 2200 ° C. in an inert gas atmosphere such as nitrogen and argon is heated to sinter the ceramic powder, as shown in FIG.
  • a columnar porous ceramic member in which a large number of through holes are arranged in parallel in the longitudinal direction with a partition wall therebetween is manufactured.
  • the ceramic molded body In the series of steps from the degreasing step to the firing step, it is preferable to place the ceramic molded body on a firing jig and perform the degreasing step and the firing step as they are. This is because the degreasing step and the firing step can be efficiently performed, and the ceramic molded body can be prevented from being damaged during replacement.
  • the porous ceramic member 20 After manufacturing the porous ceramic member 20 in which a large number of through holes are arranged in parallel in the longitudinal direction across the partition wall and the partition wall functions as a filter, the porous ceramic member 20 Perform the binding process.
  • the paste 17 is supplied from the two nozzles 61 of the paste supply device 60 and applied simultaneously, so that the paste 17 becomes the porous ceramic member 20.
  • the first side surface 20a and the second side surface 20b facing upward are mounted near the four corners.
  • the number of nozzles 61 for supplying the paste 17 of the paste supply device 60 is not limited to two, but may be one or more, for example, four or eight.
  • the paste 17 supplied by the paste supply device 60 can be supplied as the paste 17 from the paste supply device 60 as described in the ceramic structure 10 and can be formed by solidification in a spacer forming device described later.
  • a specific example is a mixture of inorganic particles, inorganic fibers, an inorganic binder, and an organic binder. Further, such mounting of the paste 17 may be performed in a state where the porous ceramic member 20 is placed on the support device 30 of the spacer forming device described later.
  • This spacer forming apparatus constitutes a manufacturing apparatus for manufacturing the ceramic structure 10.
  • the spacer forming device includes a support device 30 that supports the porous ceramic member 20 so that the first side surface 20a and the second side surface 20b face upward.
  • the support device 30 includes a first support portion 31 that supports the third side surface 20c that faces the first side surface 20a by the first support surface 33, and a fourth side surface 20d that faces the second side surface 20b.
  • a second support portion 32 having a second support surface 34 to support.
  • a first protective layer 31a and a second protective layer 32a are formed on the first support surface 33 and the second support surface 34 so as to protect the surface of the porous ceramic member 20 to be supported.
  • the first protective layer 31a and the second protective layer 32a can be formed of, for example, a resin.
  • the spacer forming apparatus also includes a plurality of first planes that define the first plane 25a and the second plane 25b of the paste 17 mounted on the first side surface 20a and the second side surface 20b of the porous ceramic member 20, respectively.
  • the paste processing apparatus 40 formed in the spacer 18 and the plurality of second spacers 19 is included.
  • the paste processing apparatus 40 includes a base part 41, a plurality of column parts 42 extending from the base part 41, and a reference surface providing part 43 supported by the column parts 42.
  • the reference surface providing unit 43 has a first reference surface 43a that faces the first side surface 20a of the porous ceramic member 20, and a second reference surface 43b that faces the second side surface 20b of the porous ceramic member 20.
  • the first reference surface 43a and the second reference surface 43b are configured to be orthogonal to each other.
  • a heater 45 is provided at a position corresponding to the paste 17 mounted on the first side surface 20a and the second side surface 20b of the porous ceramic member 20. Yes.
  • the spacer forming device is installed between the upper surface of the support device 30 and the lower surface of the paste processing device 40, and serves as an interval setting means for ensuring a predetermined interval therebetween, and provides a reference position for the paste processing device 40.
  • the reference position providing member 50 is included. Referring to FIG. 7B, which is a partially enlarged view of FIG. 7A, the reference position providing member 50 has its lower surface 50a in contact with the upper surface 32b of the second support portion 32 of the support device 30, and paste processing. The upper surface 50b is in contact with the lower surface 44a of the reference surface providing unit 43 of the apparatus 40, and a predetermined distance is secured between the upper surface 50b and the lower surface 50a. The same applies to the upper surface of the first support portion 31 of the support device 30 and the lower surface of the paste processing device 40 opposed thereto.
  • the porous ceramic member 20 in which the paste 17 is mounted on the first side surface 20 a and the second side surface 20 b facing upward is the third side.
  • the side surface 20c is placed on the support device 30 facing the first support surface 33 of the first support portion 31 and the fourth side surface 20d facing the second support surface 34 of the second support portion 32. Is done.
  • the first side surface 20 a of the porous ceramic member 20 is formed on the first reference surface 43 a from above the support device 30 and the porous ceramic member 20.
  • the paste processing device 40 is lowered so that the second side surface 20b of the porous ceramic member 20 faces the second reference surface 43b.
  • the 1st reference surface 43a of the reference surface provision part 43 of the paste processing apparatus 40 is contact
  • the paste 17 is formed so as to define a first flat surface 25a that faces the side surface 20a.
  • the second reference surface 43b of the reference surface providing unit 43 of the paste processing apparatus 40 abuts on the paste 17 mounted on the second side surface 20b of the porous ceramic member 20, and the upper surface of the paste 17 is the second surface.
  • the paste 17 is formed so as to define a second plane 25b that faces the side surface 20b and is orthogonal to the first plane 25a.
  • an appropriate interval is secured between the upper surface of the support device 30 and the lower surface of the paste processing device 40 by the reference position providing member 50.
  • the first reference surface 43a of the paste processing apparatus 40 and the first support surface 33 of the first support portion 31 facing each other with the porous ceramic member 20 interposed therebetween are similarly used.
  • a predetermined interval is secured between the second reference surface 43b and the second support surface 34 of the second support portion 32 facing each other with the porous ceramic member 20 interposed therebetween.
  • the porous ceramic member 20 has a predetermined height from the first flat surface 25a corresponding to the first reference surface 43a and the second flat surface 25b corresponding to the second reference surface 43b.
  • the height of the porous ceramic member 20 from the first plane 25a and the second plane 25b changes the height of the reference position providing member 50, and the distance between the upper surface of the support device 30 and the lower surface of the paste processing device 40 is changed. It is possible to set to a desired value by appropriately adjusting.
  • first and second side surfaces 20a and 20b of the porous ceramic member 20 are mounted on the first side surface 20a and the second side surface 20b.
  • the formed paste 17 is heated by a heater 45 installed on the first reference surface 43a and the second reference surface 43b and solidified to form a plurality of first spacers 18 and a plurality of second spacers 19.
  • the paste processing apparatus 40 is raised to make the porous The upper part of the ceramic member 20 and the support device 30 is opened.
  • the adhesive paste described in the ceramic structure 10 is applied to the first side surface 20a and the second side surface 20b above the porous ceramic member 20, for example, using a brush, a squeegee, a roll, or the like.
  • the adhesive layer 11 having a predetermined thickness is formed by printing.
  • the first flat surface 25a defined by the plurality of first spacers 18 of the porous ceramic member 20 corresponds to the surface 203 in the drawing
  • the second plane 25b defined by the plurality of second spacers 19 of the porous ceramic member 20 corresponds to the plane 204 in the figure
  • the plane 203 and the plane 204 are orthogonal to each other.
  • the height of the porous ceramic member 20 with respect to the first plane 25a corresponds to the surface 201 in the figure, and the height of the porous ceramic member 20 with respect to the second plane 25b as shown in the figure. This is a predetermined value corresponding to the surface 202.
  • the surfaces 201 and 202 defining the height of the porous ceramic member 20 are surfaces corresponding to the first plane 25a and the second plane 25b defined by the plurality of first spacers 18 and the plurality of second spacers 19, respectively. Parallel to 203 and 204.
  • the porous ceramic member 20 can be accommodated in a frame having a square cross section in FIG.
  • the plurality of first spacers 18 and the plurality of second spacers 19 are buried in the adhesive layer 11, and the left and right, upper and lower porous ceramic members are embedded. It will be pinched by 20. And after forming the contact bonding layer 11 in the side surface of such a porous ceramic member 20, the process of laminating
  • the ceramic block is heated at 50 to 100 ° C. for 1 hour to dry and cure the adhesive layer 11. Then, if necessary, the outer peripheral part is cut using, for example, a diamond cutter. And the paste of the sealing material mentioned above is apply
  • the ceramic structure 10 in which the thickness of the adhesive layer 11 does not vary, the heat transfer between the porous ceramic members is uniform, and is not easily damaged. Further, even when the flatness of the side surface of the porous ceramic member 20 is low, or when the squareness of the adjacent side surface of the porous ceramic member 20 is shifted, the plurality of first spacers 18 and the plurality of spacers Since the second spacer 19 can keep the spacing between the porous ceramic members 20 constant, chipping and breakage are less likely to occur, and the ceramic structure 10 with uniform internal thermal conductivity is manufactured. Can do. Further, as a whole, the plurality of porous ceramic members 20 can be assembled cleanly.
  • FIG. 9 is a view of the porous ceramic member 20 as viewed from the front, and a gripping region 105 gripped by the gripping portion is shown on the front of the porous ceramic member 20 in the drawing.
  • the porous ceramic member 20 is gripped by the grip portion so that the first side surface 20a and the second side surface 20b are on the upper side.
  • the nozzle 61 of the paste supply device 60 (not shown) is brought close to the first side surface 20a and the second side surface 20b of the porous ceramic member 20, and is respectively located near the four corners of the first side surface 20a and the second side surface 20b. It is mounted by supplying and applying a fixed amount of paste 17.
  • the first side surface 20a and the second side surface 20b are positioned downward as shown in FIG. 9B.
  • the porous ceramic member 20 is reversed so as to face the paste processing device 40.
  • the paste processing apparatus 40 includes a base part 41, a plurality of pillar parts 42 extending from the foundation part 41, and a reference surface providing part 43 supported by the pillar parts 42.
  • the reference surface providing unit 43 has a first reference surface 43a that faces the first side surface 20a of the porous ceramic member 20, and a second reference surface 43b that faces the second side surface 20b of the porous ceramic member 20.
  • the first reference surface 43a and the second reference surface 43b are configured to be orthogonal to each other.
  • a heater 47 is provided on the first reference surface 43a and the second reference surface 43b.
  • the gripping part lowers the porous ceramic member 20 to be gripped toward the paste processing apparatus.
  • the first side surface 20a of the porous ceramic member 20 faces the first reference surface 43a of the reference surface providing unit 43, and the paste 17 mounted on the first side surface 20a contacts the first reference surface 43a.
  • the second side surface 20b is in contact with the second reference surface 43b of the reference surface providing unit 43, and the paste 17 mounted on the second side surface 20b is in contact with the second reference surface 43b.
  • the porous ceramic member 20 is fixed at a predetermined height with respect to the first reference surface 43a and the second reference surface 43b.
  • the paste 17 mounted on the first side surface 20a and the second side surface 20b of the porous ceramic member 20 is solidified by the heaters 47 provided on the first reference surface 43a and the second reference surface 43b, respectively.
  • a plurality of first spacers 18 and a plurality of second spacers 19 are formed.
  • the porous ceramic member 20 has a predetermined height.
  • the gripping part lifts and removes the porous ceramic member 20 formed with the plurality of first spacers 18 and the plurality of second spacers 19 from the paste processing apparatus 40.
  • the process of stacking the porous ceramic members 20 to form the ceramic structure is as described above.
  • the support device 30 and the reference position providing member 50 of the spacer processing device are not required, and the device configuration is simplified.
  • setting by the reference position providing member 50 is not required, it is possible to flexibly cope with a change in the height of the porous ceramic member 20.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Ceramic Products (AREA)

Abstract

L'invention concerne une structure en céramique comprenant une pluralité d'éléments en céramique poreuse en forme de prisme (20) qui sont regroupés en paquet, une couche adhésive étant située entre ceux-ci, les éléments en céramique poreuse (20) comprenant chacun un grand nombre de trous traversants qui sont séparés par des parois de séparation et disposés côte à côte et le long d'une direction longitudinale, une pluralité de premiers éléments d'espacement (18) formés sur une première surface latérale (20a) de chaque élément en céramique poreuse (20) et délimitant un premier plan (25a) en regard de la première surface latérale (20a) et une pluralité de seconds éléments d'espacement (19) formés sur une seconde surface latérale (20b) de chaque élément en céramique poreuse (20) et délimitant un second plan (25b) en regard de la seconde surface latérale (20b) et perpendiculaire au premier plan étant inclus entre les éléments en céramique poreuse (20) et chaque élément en céramique poreuse (20) ayant une hauteur prédéfinie à partir du premier plan (25a) et du second plan (25b) de sorte que, même lorsque la perpendicularité de l'un quelconque des éléments en céramique poreuse est imparfaite, les couches adhésives pour le regroupement en paquet de la pluralité d'éléments en céramique poreuse ont une épaisseur uniforme.
PCT/JP2015/078606 2014-10-17 2015-10-08 Structure en céramique et procédé et dispositif pour la production de celle-ci WO2016060057A1 (fr)

Applications Claiming Priority (2)

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JP2014212904A JP2016079067A (ja) 2014-10-17 2014-10-17 セラミック構造体並びにその製造方法及び装置
JP2014-212904 2014-10-17

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002102627A (ja) * 2000-09-27 2002-04-09 Ibiden Co Ltd セラミック構造体及びその製造方法
WO2006093231A1 (fr) * 2005-03-03 2006-09-08 Asahi Glass Company, Limited Corps fritte avec entretoises et son procede de production et de jonction
WO2008140095A1 (fr) * 2007-05-16 2008-11-20 Ngk Insulators, Ltd. Procédé de production d'un corps lié de segments en nid d'abeille
WO2009019927A1 (fr) * 2007-08-07 2009-02-12 Ngk Insulators, Ltd. Procédé de fabrication d'un segment en nid d'abeilles avec des espaceurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002102627A (ja) * 2000-09-27 2002-04-09 Ibiden Co Ltd セラミック構造体及びその製造方法
WO2006093231A1 (fr) * 2005-03-03 2006-09-08 Asahi Glass Company, Limited Corps fritte avec entretoises et son procede de production et de jonction
WO2008140095A1 (fr) * 2007-05-16 2008-11-20 Ngk Insulators, Ltd. Procédé de production d'un corps lié de segments en nid d'abeille
WO2009019927A1 (fr) * 2007-08-07 2009-02-12 Ngk Insulators, Ltd. Procédé de fabrication d'un segment en nid d'abeilles avec des espaceurs

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