Ceramic slurry composition and method for manufacturing multilayer ceramic electronic components using same

The ceramic slurry composition, comprising ceramic powder, boron compound, polyvinyl butyral resin, monohydric alcohol, and 1,2-diol compound, addresses the gelation issue in existing compositions, allowing for the production of strong ceramic green sheets suitable for multilayer ceramic electronic components.

JP7681985B2Active Publication Date: 2025-05-23TDK CORP
View PDF 11 Cites 0 Cited by

Patent Information

Application Number
JP2021028648
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-02-25
Publication Date
2025-05-23
Estimated Expiration
2041-02-25

AI Technical Summary

Technical Problem

The existing ceramic slurry compositions containing boron compounds and polyvinyl butyral resin suffer from gelation issues, making it difficult to form ceramic green sheets with sufficient strength for multilayer ceramic electronic components.

Method used

A ceramic slurry composition is developed that includes ceramic powder, a boron compound, a polyvinyl butyral resin as a binder, an organic solvent with a monohydric alcohol, and a compound with a 1,2-diol structure, which effectively suppresses gelation and allows for the formation of strong ceramic green sheets.

Benefits of technology

The proposed ceramic slurry composition successfully suppresses gelation, enabling the production of ceramic green sheets with high strength, which can be fired at low temperatures to form multilayer ceramic electronic components with excellent properties.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 0007681985000008
    Figure 0007681985000008
  • Figure 0007681985000009
    Figure 0007681985000009
  • Figure 0007681985000001
    Figure 0007681985000001
Patent Text Reader

Abstract

To provide a ceramic slurry composition in which gelation is suppressed, and a method for manufacturing a laminated ceramic electronic component using the same.SOLUTION: A ceramic slurry composition comprises ceramic powder, a boron compound, a binder component containing polyvinyl butyral resin, an organic solvent containing a monohydric alcohol, and a compound having a 1,2-diol structure.SELECTED DRAWING: Figure 1
Need to check novelty before this filing date? Find Prior Art

Description

[Technical field]

[0001] The present disclosure relates to a ceramic slurry composition and a method for producing a multilayer ceramic electronic component using the same. [Background technology]

[0002] Multilayer ceramic electronic components such as multilayer ceramic capacitors are known as multilayer electronic components in which dielectric layers and conductor layers are alternately stacked. In multilayer ceramic electronic components, in order to suppress internal loss that occurs when used for high-frequency applications, materials such as silver and copper, which have low melting points and low electrical resistance, are used as materials for composing the conductor layers. However, low-resistance materials such as silver and copper have low melting points and therefore cannot be fired simultaneously with normal ceramic green sheets.

[0003] In this context, ceramic green sheets formed from ceramic slurry compositions containing ceramic powder and a boron compound have been developed as ceramic green sheets that can be co-fired with low-resistance materials. The addition of the boron compound to the ceramic powder reduces the sintering temperature.

[0004] However, ceramic green sheets are required to have strength. In order to form ceramic green sheets with high strength, ceramic slurry compositions containing a resin having a hydroxyl group, such as a polyvinyl butyral resin, which has high strength, as a binder component have been developed.

[0005] For example, Patent Document 1 discloses a slurry composition for ceramic green sheets, which contains a ceramic raw material powder containing boron, a binder component having a hydroxyl group, a β-diketone as a chelating agent, and an organic solvent, and the β-diketone content is within a specific range. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2005-139034 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, when the ceramic slurry composition contains a boron compound and a polyvinyl butyral resin, a reaction between the boron compound and the polyvinyl butyral resin proceeds. The reaction may cause gelation, making it difficult to form a ceramic green sheet. The slurry composition disclosed in Patent Document 1 does not sufficiently suppress gelation.

[0008] Therefore, an object of one aspect of the present invention is to provide a ceramic slurry composition in which gelation is suppressed, and a method for producing a multilayer ceramic electronic component using the same. [Means for solving the problem]

[0009] One aspect of the present invention is a ceramic slurry composition containing a ceramic powder, a boron compound, a binder component containing a polyvinyl butyral resin, an organic solvent containing a monohydric alcohol, and a compound having a 1,2-diol structure.

[0010] In one embodiment, the monohydric alcohol may be at least one selected from the group consisting of methanol, ethanol, 1-propanol, and 2-propanol.

[0011] In one embodiment, the content of the compound having a 1,2-diol structure is boric acid (H 3 BO 3 The content of the boron compound may be 2.5 to 100 mass % based on the total amount of the boron compound converted into the total mass of the boron compound.

[0012] In one embodiment, the solubility of the compound having a 1,2-diol structure in 1-propanol at 20° C. may be 0.1 g / 100 g or more.

[0013] In one embodiment, the compound having a 1,2-diol structure may be at least one selected from the group consisting of sugars, sugar alcohols, and sugar acids.

[0014] In one embodiment, the compound having a 1,2-diol structure may be at least one selected from the group consisting of sugar alcohols and sugar acids.

[0015] In one embodiment, the water content may be 1% by mass or less based on the total amount of the composition.

[0016] Another aspect of the present invention is a method for producing a multilayer ceramic electronic component, comprising the steps of: laminating and firing lamination sheets each including a ceramic green sheet formed using a ceramic slurry composition and an internal electrode pattern formed on a main surface of the ceramic green sheet to obtain a ceramic body; and forming terminal electrodes on the ceramic body, wherein the ceramic slurry composition contains ceramic powder, a boron compound, a binder component including a polyvinyl butyral resin, an organic solvent including a monohydric alcohol, and a compound having a 1,2-diol structure. Effect of the Invention

[0017] According to one aspect of the present invention, it is possible to provide a ceramic slurry composition in which gelation is suppressed, and a method for producing a multilayer ceramic electronic component using the same. [Brief description of the drawings]

[0018] [Figure 1] 1 is a diagram illustrating a cross-sectional configuration of a multilayer ceramic electronic component according to one embodiment. [Diagram 2] 13A and 13B are diagrams illustrating a case where streaks occur in the evaluation of streaks on a sheet. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the drawings, in which like elements are designated by like reference numerals.

[0020] [Ceramic slurry composition] The ceramic slurry composition according to the present embodiment contains a ceramic powder, a boron compound, a binder component containing a polyvinyl butyral resin, an organic solvent containing a monohydric alcohol, and a compound having a 1,2-diol structure.

[0021] The ceramic powder is not particularly limited, but examples thereof include powders of oxides containing titanium and oxides containing zirconium. 3 , (Ca,Sr)(Ti,Zr)O 3 The oxides may be calcined. When calcining, the temperature may be, for example, 900° C. or higher and 1350° C. or lower. The calcining time is preferably, for example, 0.5 to 24 hours. The ceramic powder does not need to be an oxide from the beginning, and may be, for example, a powder that becomes an oxide by heat treatment, such as a carbonate or hydroxide. The ceramic powder may be used alone or in combination of two or more kinds.

[0022] A boron compound is a compound that contains boron as a constituent element. Examples of boron compounds include H 3 BO 3 , B 2 O 3 , and boron-containing glasses such as borate glasses. 3 BO 3 The boron compound content converted to 100% is calculated based on the ceramic powder and boric acid (H 3 BO 3 The boron content may be 0.1 to 20 mass % based on the total amount of the boron compounds converted into carbon black.

[0023] The ceramic slurry composition according to the present embodiment may contain an auxiliary agent. Examples of the auxiliary agent include a magnesium compound containing magnesium as a constituent element, a rare earth element compound containing a rare earth element as a constituent element, a manganese compound containing manganese as a constituent element, a chromium compound containing chromium as a constituent element, a silicon compound containing silicon as a constituent element, an aluminum compound containing aluminum as a constituent element, and a vanadium compound containing vanadium as a constituent element. These compounds may be oxides, carbonates, or hydroxides. The auxiliary agent may be used alone or in combination of two or more.

[0024] The content of the auxiliary agent may be 0.1 to 20 mass % based on the total amount of the ceramic powder.

[0025] The binder component includes a polyvinyl butyral resin. The content of the polyvinyl butyral resin may be 80 mass % or more, 90 mass % or more, or may be 100 mass % based on the total amount of the binder component.

[0026] The binder component may contain a resin component other than the polyvinyl butyral resin, such as an acrylic resin or an ethyl cellulose resin.

[0027] The content of the binder component may be 4 to 12 mass % based on the total amount of the ceramic powder.

[0028] The organic solvent includes a monohydric alcohol. The number of carbon atoms in the monohydric alcohol may be, for example, 1 to 10, 1 to 8, or 1 to 5 or less, and from the viewpoint of suppressing gelation, the number of carbon atoms is preferably 1 to 3, and more preferably 1 or 2. Examples of the monohydric alcohol include methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, and 2-butanol, and from the viewpoint of suppressing gelation, methanol, ethanol, 1-propanol, and 2-propanol are preferable, and methanol and ethanol are more preferable.

[0029] From the viewpoint of suppressing gelation, the content of the monohydric alcohol is preferably 20% by mass or more, more preferably 30% by mass or more, and even more preferably 40% by mass or more, based on the total amount of the organic solvent.

[0030] The organic solvent may contain an organic solvent other than the monohydric alcohol. Examples of such organic solvents include hydrocarbon solvents such as mineral spirits, xylene, and toluene, ketone solvents such as methyl ethyl ketone (MEK) and acetone, and ethyl acetate. The organic solvent may be used alone or in combination of two or more.

[0031] The content of the organic solvent may be 100 to 250 mass % based on the total amount of the ceramic powder.

[0032] The 1,2-diol structure is a structure in which two hydroxyl groups are each bonded to two different adjacent carbons. Examples of compounds having a 1,2-diol structure include sugars, sugar alcohols, sugar acids, and polyhydric alcohols other than sugar alcohols. Examples of sugars include monosaccharides, disaccharides, and polysaccharides. Examples of monosaccharides include heptose (seven carbon sugar), hexose (six carbon sugar), and pentose (five carbon sugar). Examples of heptose include sedoheptulose. Examples of hexose include α-glucose (glucose), β-glucose (glucose), fructose (fruit sugar), galactose, talose, and allose. Examples of pentose include ribulose, apiose, and ribose. Examples of disaccharides include sucrose (sucrose), lactose (milk sugar), maltose (malt sugar), and cellobiose. Examples of polysaccharides include amylose (starch), cellulose, amylopectin, glycogen (animal starch), pectin, and glucomannan. Examples of sugar alcohols include sorbitol, xylitol, and mannitol. Examples of sugar acids include ascorbic acid, glyceric acid, neuraminic acid, glucuronic acid, and tartaric acid. Examples of polyhydric alcohols other than sugar alcohols include ethylene glycol and glycerin.

[0033] The compound having a 1,2-diol structure is preferably a sugar, a sugar alcohol, or a sugar acid from the viewpoint of suppressing gelation, and is preferably a sugar alcohol or a sugar acid from the viewpoint of suppressing the generation of streaks in a ceramic green sheet obtained by using the ceramic slurry composition. The compound having a 1,2-diol structure may be used alone or in combination of two or more.

[0034] The content of the compound having a 1,2-diol structure is determined based on the viewpoint of suppressing gelation, and is determined based on the content of boric acid (H 3 BO 3 The content of the boron compound in the total amount of the boron compound converted into carbon black is preferably from 2.5 to 100 mass %, and more preferably from 12.5 to 75 mass %.

[0035] The solubility of the compound having a 1,2-diol structure in 1-propanol at 20°C is preferably 0.1 g / 100 g or more, more preferably 0.2 g / 100 g or more, and even more preferably 0.3 g / 100 g or more, from the viewpoint of suppressing the occurrence of streaks in a ceramic green sheet obtained using the ceramic slurry composition.

[0036] From the viewpoint of suppressing gelation, the number of hydroxy groups contained in the molecule of the compound having a 1,2-diol structure is preferably 4 or more, and more preferably 5 or more. The number of hydroxy groups contained in the molecule of the compound having a 1,2-diol structure may be 8 or less.

[0037] The molecular weight of the compound having a 1,2-diol structure is preferably 180 or less from the viewpoint of suppressing the occurrence of streaks in a ceramic green sheet obtained by using the ceramic slurry composition.

[0038] The ceramic slurry composition according to the present embodiment may contain, for example, a plasticizer, a dispersant, and water as components other than those described above.

[0039] Examples of the plasticizer include dioctyl phthalate, benzyl butyl phthalate, diisononyl phthalate, and dioctyl adipate.

[0040] Examples of the dispersant include alkylimidazolines and high molecular weight polyester acid amide amine salts.

[0041] The water content is preferably 1 mass % or less, and more preferably 0.5 mass % or less, based on the total amount of the ceramic slurry composition, from the viewpoint of suppressing the occurrence of pinholes in the green sheet. The ceramic slurry composition according to the present embodiment does not need to contain water.

[0042] The ceramic slurry composition according to the present embodiment is obtained by mixing a ceramic powder, a boron compound, a binder component, an organic solvent, and a compound having a 1,2-diol structure. The order of mixing is not particularly limited, but from the viewpoint of suppressing gelation, it is preferable to first mix the ceramic powder, the boron compound, and the organic solvent, and then add and mix the binder component. The ceramic powder and the boron compound may or may not be mixed in advance. When the ceramic powder and the boron compound are mixed in advance, the boron compound may be attached to the ceramic powder. The ceramic powder may be attached to the ceramic powder by calcination or coating.

[0043] <Action and effect> The ceramic slurry composition according to the present embodiment contains a boron compound, a polyvinyl butyral resin, an organic solvent containing a monohydric alcohol, and a compound having a 1,2-diol structure in combination, so that gelation can be suppressed compared to a ceramic slurry composition that does not contain an organic solvent containing a monohydric alcohol or does not contain a compound having a 1,2-diol structure. In addition, since the ceramic slurry composition according to the present embodiment contains a boron compound and a polyvinyl butyral resin, it can be fired even at a low temperature and has excellent strength.

[0044] [Ceramic electronic components] Next, an example of a multilayer ceramic electronic component including ceramic layers formed using the ceramic slurry composition according to the above embodiment will be described. Fig. 1 is a diagram showing a schematic cross-sectional configuration of a multilayer ceramic electronic component according to a preferred embodiment. The multilayer ceramic electronic component 100 shown in Fig. 1 includes a ceramic body 3 and terminal electrodes 7 provided on both ends of the ceramic body.

[0045] The ceramic body 3 is composed of a plurality of ceramic layers 1 (three layers in this example) formed using the ceramic slurry composition according to the above embodiment, and a plurality of internal electrodes 2 provided between the ceramic layers 1. In other words, the ceramic body 3 is a laminate in which the ceramic layers 1 and the internal electrodes 2 are alternately stacked. In the ceramic body 3, the internal electrodes 2 are provided (drawn out) such that one end of each is exposed on different opposing end faces of the ceramic body 3, and the exposed portions are connected to a terminal electrode 7.

[0046] The material of the internal electrode 2 is not particularly limited. For example, the metal element of Cu, Ag, Pd, Ni, and Al, or a material (alloy, compound, etc.) containing these as a main component may be used. Since the ceramic slurry composition of the above embodiment can be fired even at a low temperature, it is preferable that the internal electrode 2 contains Cu and Ag.

[0047] A pair of terminal electrodes 7 are provided on end faces of the ceramic body 3 where the internal electrodes 2 are exposed. The terminal electrode 7 includes a base electrode 4, a first layer formed on the base electrode 4, and a second layer formed on the first layer. Examples of materials for the terminal electrode 7 include Cu, Ag, Pd, Ni, Sn, and conductive resin. For example, the terminal electrode 7 may have a base electrode 4 containing Cu, a first layer which is a Ni layer containing Ni, and a second layer which is a Sn layer containing Sn. The terminal electrode 7 may be a single layer without a plurality of layers.

[0048] Next, a preferred embodiment of a method for manufacturing the multilayer ceramic electronic component 100 according to the above embodiment will be described.

[0049] The method for manufacturing the multilayer ceramic electronic component 100 according to this embodiment includes a step of laminating and firing a lamination sheet comprising a ceramic green sheet formed using the ceramic slurry composition according to the above embodiment and an internal electrode pattern formed on the main surface of the ceramic green sheet to obtain a ceramic body 3, and a step of forming a terminal electrode 7 on the ceramic body 3.

[0050] The ceramic green sheet can be obtained, for example, by applying the ceramic slurry composition according to the above embodiment onto a support sheet and drying the resulting coating.

[0051] The support sheet may be, for example, a PET film. The method for applying the ceramic slurry composition is not particularly limited, and may be, for example, a doctor blade method. The drying time is not particularly limited. The drying temperature may be, for example, 60 to 120° C. The thickness of the ceramic green sheet may be 0.5 to 30 μm.

[0052] The lamination sheets are obtained by forming a pattern of the internal electrodes 2 on the main surfaces of the ceramic green sheets by screen printing or the like of a conductive paste.

[0053] Since the ceramic slurry composition of the above embodiment is suitably used for firing at low temperatures, the firing temperature is preferably 800 to 1085° C., and more preferably 800 to 961° C. The firing time may be, for example, 0.5 to 20 hours, or 1 to 10 hours.

[0054] The method for forming the terminal electrode is not particularly limited, and may be, for example, the following method. That is, first, a paste containing Cu particles, glass frit, resin, and a solvent is applied to the end surface of the ceramic body 3 to form a coating film. Next, the formed coating film is baked at high temperature to form a Cu sintered body on the end surface of the ceramic body 3. Next, Ni plating is applied to the Cu sintered body to form a Ni layer. Next, Sn plating is applied to the Ni layer to form a Sn layer, thereby forming the terminal electrode.

[0055] In the above embodiment, a ceramic capacitor has been described as an example of a multilayer ceramic electronic component, but the present invention is not limited to this. The present invention can also be applied to other multilayer ceramic electronic components, such as inductors, varistors, thermistors, LC filters, resistors, etc., as long as the electronic components have a ceramic body. EXAMPLES

[0056] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples in any way.

[0057] [First Consideration] <Adjustment of Composition> (Example 1-1) A mixture was obtained by adding spherical stabilized zirconia media with a diameter of 2 mm and the materials shown in Table 1 in the amounts shown in Table 1 to a ball mill and mixing them. In addition, 1.89 g of polyvinyl butyral resin (manufactured by Sekisui Chemical Co., Ltd., product name "BH6") and 10.70 g of 1-propanol were mixed to obtain a lacquer in which polyvinyl butyral resin was dissolved. The lacquer was added to the obtained mixture and mixed to obtain a composition. The proportion of monohydric alcohol in the total amount of organic solvent was 37.0 mass%.

[0058] (Comparative Example 1-1) As shown in Table 1, H 3 BO 3 A mixture was obtained in the same manner as in Example 1-1, except that no additives were added. A polyvinyl butyral resin that had been dissolved in an organic solvent in advance to form a lacquer was added to the mixture, and the mixture was mixed to obtain a composition.

[0059] (Comparative Example 2-2) As shown in Table 1, a mixture was obtained in the same manner as in Example 1-1, except that no additive was added. A polyvinyl butyral resin that had been dissolved in an organic solvent in advance and turned into a lacquer-like form was added to the mixture, and the mixture was mixed to obtain a composition.

[0060] (Examples 1-2 to 1-7 and Comparative Examples 1-3 and 1-4) A composition was obtained in the same manner as in Example 1-1, except that the additives were changed as shown in Tables 1 and 2. The weight-average molecular weight of the polyethylene glycol used as the additive in Comparative Example 1-4 was 380-420.

[0061] <Viscosity measurement> (Examples 1-1 to 1-7 and Comparative Examples 1-1 to 1-4) The viscosity of the resulting composition was measured using a B-type rotational viscometer at a temperature of 25° C. and a rotation speed of 100 rpm. The results are shown in Tables 1 and 2.

[0062] [Table 1]

[0063] [Table 2]

[0064] [Second consideration] (Examples 2-1 to 2-8) A composition was prepared in the same manner as in Example 1-3, except that the amount of xylitol was changed as shown in Tables 3 and 4. The viscosity of the obtained composition was measured in the same manner as in Example 1-3. The results are shown in Tables 3 and 4.

[0065] [Table 3]

[0066] [Table 4]

[0067] [Third Consideration] <Adjustment of Composition> (Examples 3-1 to 3-3) A mixture was obtained by adding spherical stabilized zirconia media with a diameter of 2 mm and the materials shown in Table 5 to a ball mill and mixing them. In addition, 21.13 g of methyl ethyl ketone and 1.91 g of polyvinyl butyral resin (manufactured by Sekisui Chemical Co., Ltd., product name "BH6") were mixed to obtain a lacquer in which the polyvinyl butyral resin was dissolved. The lacquer was added to the obtained mixture in the amount shown in Table 5, and the mixture was mixed in a ball mill to obtain a composition.

[0068] (Comparative Example 3-1) As shown in Table 5, a composition was obtained in the same manner as in Example 3-1, except that no additive was added and methyl ethyl ketone was used instead of 1-propanol to prepare the mixture.

[0069] (Comparative Example 3-2) As shown in Table 5, compositions were obtained in the same manner as in Example 3-1, except that the mixture was prepared without adding any additives.

[0070] (Comparative Example 3-3) As shown in Table 5, a composition was obtained in the same manner as in Example 3-1, except that the mixture was prepared by using methyl ethyl ketone instead of 1-propanol.

[0071] <Viscosity measurement> (Examples 3-1 to 3-3 and Comparative Examples 3-1 to 3-3) The viscosity was measured in the same manner as in Examples 1-1 to 1-7 and Comparative Examples 1-1 to 1-4. The results are shown in Table 5. In the table, "unmeasurable" indicates that the composition gelled.

[0072] [Table 5]

[0073] [Fourth Consideration] <Adjustment of Composition> (Examples 4-1 to 4-2 and Comparative Examples 4-1 to 4-4) A composition was obtained in the same manner as in Example 3-1, except that the materials shown in Table 6 were used.

[0074] <Viscosity measurement> (Examples 4-1 to 4-2 and Comparative Examples 4-1 to 4-4) The viscosity was measured in the same manner as in Example 3-1, and the results are shown in Table 6.

[0075] [Table 6]

[0076] [Fifth Consideration] <Adjustment of Composition> (Examples 5-1 to 5-5) A mixture was prepared in the same manner as in Example 1-1, except that the materials shown in Table 7 were added to the ball mill in the amounts shown in Table 7 instead of the materials shown in Table 1. A composition was prepared in the same manner as in Example 1-1, except that the lacquer in which the polyvinyl butyral resin was dissolved was added to the mixture in the amounts shown in Table 7. The proportion of monohydric alcohol in the total amount of organic solvent was 42.2 mass%.

[0077] <Preparation of sheets> (Examples 5-1 to 5-5) A silicone resin-coated PET film (width: 100 mm) was prepared. Then, the obtained composition was applied to the PET film using a dam coater. The gap between the PET film and the dam coater was 100 μm for both the inner layer and the outer layer. Then, the composition applied to the PET film was dried with a dryer to obtain a sheet in which a dry film of the composition was formed on the PET film. The temperature of the dryer was 80° C. The length of the ceramic layer in the TD direction was 80 mm.

[0078] <Evaluation of streaks in sheets> (Examples 5-1 to 5-5) Cellophane tape (registered trademark) was attached to the obtained sheet in the TD direction. The length of the cellophane tape was set to be equal to or longer than the length of the dry film in the TD direction. Next, the attached cellophane tape was peeled off in the MD direction to peel off a part of the dry film from the PET film. For the dry film that was not peeled off and remained on the PET film, the number of mountain-shaped protrusions indicated by the arrows in Figure 2 was counted as the number of streaks that occurred on the sheet. The results are shown in Table 7.

[0079] <Measurement of solubility of compounds with 1,2-diol structure> (Examples 5-1 to 5-5) 1-propanol was placed in a flask as a solvent. A compound having a 1,2-diol structure was added to the 1-propanol until a precipitate remained. The flask was then sealed, thoroughly shaken, and allowed to stand until the supernatant and precipitate were completely separated. The supernatant was transferred to a heat-resistant container and evaporated at 120°C, and the solubility of the compound having a 1,2-diol structure in 1-propanol was calculated from the mass of the supernatant and the mass of the residue after evaporation. The results are shown in Table 7.

[0080] <Measurement of Viscosity of Composition> (Examples 5-1 to 5-5) The viscosity of the composition was measured in the same manner as in Example 1-1, and the results are shown in Table 7.

[0081] [Table 7]

[0082] REFERENCE SIGNS LIST 1...ceramic layer, 2...internal electrode, 3...ceramic body, 4...base electrode, 5...first layer, 6...second layer, 7...terminal electrode, 100...multilayer ceramic electronic component.

Claims

1. The ceramic powder contains a ceramic powder, a boron compound, a binder component containing a polyvinyl butyral resin, an organic solvent containing a monohydric alcohol, and a compound having a 1,2-diol structure, The content of the compound having a 1,2-diol structure is boric acid (H 3 B.O. 3 12.5 to 75 mass% based on the total amount of the boron compound converted into the compound having a 1,2-diol structure is at least one selected from the group consisting of sugars, sugar alcohols, and sugar acids, the molecular weight of the compound having a 1,2-diol structure is 180 or less, The ceramic slurry composition, wherein the compound having a 1,2-diol structure has a solubility in 1-propanol at 20° C. of 0.1 g / 100 g or more.

2. 2. The ceramic slurry composition according to claim 1, wherein the monohydric alcohol is at least one selected from the group consisting of methanol, ethanol, 1-propanol, and 2-propanol.

3. 3. The ceramic slurry composition according to claim 1, wherein the compound having a 1,2-diol structure is at least one selected from the group consisting of sugar alcohols and sugar acids.

4. The ceramic slurry composition according to any one of claims 1 to 3, wherein the water content is 1 mass % or less based on the total amount of the composition.

5. a step of laminating a ceramic green sheet formed using the ceramic slurry composition and a lamination sheet including an internal electrode pattern formed on a main surface of the ceramic green sheet, and firing the laminate to obtain a ceramic body; forming a terminal electrode on the ceramic body; Equipped with the ceramic slurry composition contains a ceramic powder, a boron compound, a binder component containing a polyvinyl butyral resin, an organic solvent containing a monohydric alcohol, and a compound having a 1,2-diol structure; In the ceramic slurry composition, the content of the compound having a 1,2-diol structure is boric acid (H 3 B.O. 3 12.5 to 75 mass% based on the total amount of the boron compound converted into the compound having a 1,2-diol structure is at least one selected from the group consisting of sugars, sugar alcohols, and sugar acids, the molecular weight of the compound having a 1,2-diol structure is 180 or less, The method for producing a multilayer ceramic electronic component, wherein the compound having a 1,2-diol structure has a solubility in 1-propanol at 20° C. of 0.1 g / 100 g or more.

Citation Information

Patent Citations

  • Cast film slurry of ultrathin lamination flaky inductor and manufacturing method for cast film of ultrathin lamination flaky inductor

    CN104961471A

  • Production of ceramics or ceramic material using oxide-based raw material

    JP1990225359A

  • Conductive paste, manufacturing method of laminated ceramic electronic component and laminated ceramic electronic component

    JP2003100144A

  • Ceramic slurry

    JP2003238254A

  • Slurry composition for ceramic green sheet and its production method

    JP2005139034A