CN110511026B - X8R type ceramic capacitor dielectric material and preparation method thereof - Google Patents

X8R type ceramic capacitor dielectric material and preparation method thereof Download PDF

Info

Publication number
CN110511026B
CN110511026B CN201910669871.5A CN201910669871A CN110511026B CN 110511026 B CN110511026 B CN 110511026B CN 201910669871 A CN201910669871 A CN 201910669871A CN 110511026 B CN110511026 B CN 110511026B
Authority
CN
China
Prior art keywords
hours
ceramic capacitor
dielectric material
capacitor dielectric
ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910669871.5A
Other languages
Chinese (zh)
Other versions
CN110511026A (en
Inventor
胡长征
吴山
郭哲
孙朝中
方亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guilin University of Technology
Original Assignee
Guilin University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guilin University of Technology filed Critical Guilin University of Technology
Priority to CN201910669871.5A priority Critical patent/CN110511026B/en
Publication of CN110511026A publication Critical patent/CN110511026A/en
Application granted granted Critical
Publication of CN110511026B publication Critical patent/CN110511026B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/495—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/442—Carbonates
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

The invention discloses an X8R type ceramic capacitor dielectric material and a preparation method thereof. Ball-milling barium carbonate, strontium carbonate, samarium oxide, ferric oxide and niobium pentoxide, refining raw materials, and obtaining BaSr according to a nominal chemical formula3SmFe0.5Nb9.5O30Proportioning according to stoichiometric ratio, pre-sintering, secondary ball milling and other procedures, and finally preparing the X8R type ceramic capacitor dielectric material BaSr by utilizing a solid phase reaction process3SmFe0.5Nb9.5O30. The method can obtain the dielectric ceramic material with excellent temperature stability, and meets the EIA X8R standard; the method is simple, energy-saving and emission-reducing, has moderate cost and is suitable for batch production.

Description

X8R type ceramic capacitor dielectric material and preparation method thereof
Technical Field
The invention relates to an X8R type ceramic capacitor dielectric material and a preparation method thereof, belonging to the technical field of electronic materials and devices.
Background
With the rapid development of the electronic information industry, the variety and use of electronic products are gradually increasing, and ceramic capacitors are important basic devices in the electronic information industry. Therefore, higher requirements are put on ceramic capacitor materials, such as wider temperature use range, more stable dielectric properties and the like. According to the EIA (electronic Industries Association) standard, the X8R type MLCC means that the change rate of capacitance (delta C/C25) is less than or equal to +/-15% in the temperature range from-55 ℃ to +150 ℃ on the basis of the capacitance value of 25 ℃. In the fields of military industry, aerospace, exploration and the like, electronic components capable of bearing high temperature are greatly required, however, most of the existing ceramic capacitors adopt an X7R ceramic formula, but the capacity-temperature characteristic of the material has certain limitation, the capacitance change rate (delta C/C25) is less than or equal to +/-15% in the range of-55 ℃ to +125 ℃, and the dielectric property of the temperature cannot be provided when the temperature exceeds +125 ℃. Therefore, the X8R type MLCC ceramic dielectric material with high temperature stability is developed and has important practical application value. In addition, most ceramic capacitors are based on perovskite structures, and the tungsten bronze structure is adopted in the invention, which is beneficial to expanding the structural types of ceramic capacitor materials.
Disclosure of Invention
The invention aims to provide an X8R type ceramic capacitor dielectric material and a preparation method thereof.
The nominal chemical formula of the X8R type ceramic capacitor dielectric material is BaSr3SmFe0.5Nb9.5O30。
The method for preparing the X8R type ceramic capacitor dielectric material comprises the following specific steps:
(1) BaCO with purity of more than 99.9 percent3、SrCO3、Sm2O3、Fe2O3And Nb2O5As starting material, according to BaCO3:SrCO3:Sm2O3:Fe2O3:Nb2O5The materials are mixed according to the molar ratio of 1:3:0.5:0.25:4.75, and then are subjected to ball milling for 24 hours by using absolute ethyl alcohol as a ball milling medium, and are dried for 4 hours at 100 ℃ to prepare a dried sample.
(2) And (2) pre-sintering the dried sample prepared in the step (1) at 1000-1150 ℃ for 4 hours to prepare pre-sintered powder.
(3) Grinding the pre-sintered powder prepared in the step (2), then ball-milling for 24 hours by taking absolute ethyl alcohol as a ball-milling medium, uniformly mixing, drying for 4 hours at 100 ℃, then grinding into powder, taking 5-10 wt% of polyvinyl alcohol aqueous solution as a binder for granulation, then sieving with a 60-mesh sieve, pressing and molding, keeping the temperature at 400-600 ℃ for 4-6 hours, discharging colloid, sintering at 1100-1300 ℃ for 4-10 hours in a high-temperature furnace air atmosphere, and then naturally cooling to room temperature along with the furnace to obtain the X8R type ceramic capacitor dielectric material.
The preferred concentration of the aqueous polyvinyl alcohol solution is 8 wt%.
The dielectric material is prepared by adopting a traditional solid phase method, the X8R type ceramic material with excellent performance can be obtained by sintering at a medium temperature, the process is simple, the cost is low, and the environment is not harmful, and the prepared X8R type ceramic capacitor dielectric material has good temperature stability, can meet the requirement that (delta C/C25) is less than or equal to +/-15% within the range of-55-150 ℃, and meets the X8R standard of EIA; the ceramic capacitor dielectric material and the preparation method thereof provided by the invention have good industrialization prospect.
Drawings
FIG. 1 shows BaSr produced by the present invention3SmFe0.5Nb9.5O30X-ray diffraction pattern of the ceramic capacitor dielectric material.
FIG. 2 shows BaSr produced by the present invention3SmFe0.5Nb9.5O30And (3) a surface micro-topography photo of the ceramic capacitor dielectric material.
FIG. 3 shows BaSr produced by the present invention3SmFe0.5Nb9.5O30The dielectric constant of the ceramic capacitor dielectric material is in a regular graph along with the change of temperature.
FIG. 4 shows BaSr produced by the present invention3SmFe0.5Nb9.5O30The change rate of the capacitance of the ceramic capacitor dielectric material is shown by a rule graph along with the change of the temperature, and the change of the dielectric constant is within +/-15% within the temperature range of minus 55-150 ℃.
Detailed Description
Example 1:
BaCO with the purity of 99.99 percent3、SrCO3、Sm2O3、Fe2O3And Nb2O5The raw materials are BaSr according to the stoichiometric ratio3SmFe0.5Nb9.5O30Putting the ingredients into a ball milling tank; selecting a zirconia ball and a nylon tank; mass of added raw materialIs 8 percent of the mass of the grinding ball; the mixing and ball milling time is 24 hours, the rotating speed is 350 r/min, and the ball milling medium is absolute ethyl alcohol; the obtained product is placed in an oven at 100 ℃ to be dried for 4 hours, and is pre-sintered for 4 hours when the temperature is raised to 1000 ℃ at the heating rate of 5 ℃/min; taking out the presintered powder, grinding, ball-milling for 24 hours by taking absolute ethyl alcohol as a ball-milling medium, uniformly mixing, drying for 4 hours at 100 ℃, grinding into powder, granulating by taking a polyvinyl alcohol aqueous solution with the mass percentage concentration of 5% as a binder, sieving by a 60-mesh sieve, pressing into a wafer-shaped green body with the diameter of 10mm and the thickness of 1mm under the pressure of 100MPa, heating to 400 ℃ at the heating rate of 1.5 ℃/min, preserving heat for 4 hours, discharging colloid, heating to 1100 ℃ at the heating rate of 5 ℃/min, preserving heat for 4 hours in the air atmosphere of a high-temperature furnace, sintering, and naturally cooling to room temperature along with the furnace to obtain the BaSr 8R type ceramic capacitor medium material3SmFe0.5Nb9.5O30。
Example 2:
BaCO with the purity of 99.99 percent3、SrCO3、Sm2O3、Fe2O3And Nb2O5The raw materials are BaSr according to the stoichiometric ratio3SmFe0.5Nb9.5O30Putting the ingredients into a ball milling tank; selecting a zirconia ball and a nylon tank; the mass of the added raw materials is 8 percent of that of the grinding ball; the mixing and ball milling time is 24 hours, the rotating speed is 350 r/min, and the ball milling medium is absolute ethyl alcohol; the obtained product is placed in an oven at 100 ℃ to be dried for 4 hours, and is pre-sintered for 4 hours when the temperature is raised to 1100 ℃ at the heating rate of 5 ℃/min; taking out the presintered powder, grinding, ball-milling for 24 hours by taking absolute ethyl alcohol as a ball-milling medium, uniformly mixing, drying for 4 hours at 100 ℃, grinding into powder, granulating by taking a polyvinyl alcohol aqueous solution with the mass percentage concentration of 5% as a binder, sieving by a 60-mesh sieve, pressing into a wafer-shaped green body with the diameter of 10mm and the thickness of 1mm under the pressure of 100MPa, heating to 550 ℃ at the heating rate of 1.5 ℃/min, preserving heat for 5 hours, discharging colloid, heating to 1250 ℃ at the heating rate of 5 ℃/min, preserving heat for 6 hours in a high-temperature furnace air atmosphere, sintering, and naturally cooling to room temperature along with the furnace to obtain the X8R type ceramic capacitor medium material BaSr3SmFe0.5Nb9.5O30。
Example 3:
BaCO with the purity of 99.99 percent3、SrCO3、Sm2O3、Fe2O3And Nb2O5The raw materials are BaSr according to the stoichiometric ratio3SmFe0.5Nb9.5O30Putting the ingredients into a ball milling tank; selecting a zirconia ball and a nylon tank; the mass of the added raw materials is 8 percent of that of the grinding ball; the mixing and ball milling time is 24 hours, the rotating speed is 350 r/min, and the ball milling medium is absolute ethyl alcohol; the obtained product is placed in an oven at 100 ℃ to be dried for 4 hours, and is pre-sintered for 4 hours after being heated to 1150 ℃ at the heating rate of 5 ℃/min; taking out the presintered powder, grinding, ball-milling for 24 hours by taking absolute ethyl alcohol as a ball-milling medium, uniformly mixing, drying for 4 hours at 100 ℃, grinding into powder, granulating by taking a polyvinyl alcohol aqueous solution with the mass percentage concentration of 10% as a binder, sieving by a 60-mesh sieve, pressing into a wafer-shaped green body with the diameter of 10mm and the thickness of 1mm under the pressure of 100MPa, heating to 600 ℃ at the heating rate of 1.5 ℃/min, preserving heat for 6 hours, discharging colloid, heating to 1300 ℃ at the heating rate of 5 ℃/min, preserving heat for 10 hours in the air atmosphere of a high-temperature furnace, sintering, and naturally cooling to room temperature along with the furnace to obtain the X8R type ceramic capacitor medium material BaSr3SmFe0.5Nb9.5O30。
The dielectric material of X8R type ceramic capacitor prepared by the above example is fired with silver electrodes on both sides to form a wafer capacitor, and then the dielectric material is tested and calculated for the change of relative dielectric constant with temperature, as shown in FIG. 3, BaSr3SmFe0.5Nb9.5O30The ceramic material has stable temperature characteristics in a wide temperature range, as shown in figure 4, meets the X8R standard, namely the capacitance change rate is not more than +/-15% within the range of-55-150 ℃, and can be used as an X8R type ceramic capacitor dielectric material.

Claims (2)

1. An X8R type ceramic capacitor dielectric material, characterized in that the nominal chemical formula of the X8R type ceramic capacitor dielectric material is BaSr3SmFe0.5Nb9.5O30；
The preparation steps of the X8R type ceramic capacitor dielectric material are as follows:
(1) BaCO with purity of more than 99.9 percent3、SrCO3、Sm2O3、Fe2O3And Nb2O5As starting material, according to BaCO3:SrCO3:Sm2O3:Fe2O3:Nb2O5Mixing the materials according to a molar ratio of 1:3:0.5:0.25:4.75, then using absolute ethyl alcohol as a ball milling medium, mixing and ball milling the materials for 24 hours, and drying the materials for 4 hours at 100 ℃ to prepare a dried sample;
(2) pre-sintering the dried sample prepared in the step (1) at 1000-1150 ℃ for 4 hours to prepare pre-sintered powder;
(3) grinding the pre-sintered powder prepared in the step (2), then ball-milling for 24 hours by taking absolute ethyl alcohol as a ball-milling medium, uniformly mixing, drying for 4 hours at 100 ℃, then grinding into powder, taking 5-10 wt% of polyvinyl alcohol aqueous solution as a binder for granulation, then sieving with a 60-mesh sieve, pressing and molding, keeping the temperature at 400-600 ℃ for 4-6 hours, discharging colloid, sintering at 1100 ℃ in a high-temperature furnace air atmosphere for 4 hours, and then naturally cooling to room temperature along with the furnace to obtain the X8R type ceramic capacitor dielectric material.
2. The preparation method of the X8R type ceramic capacitor dielectric material as claimed in claim 1, characterized by comprising the following steps:
(1) BaCO with purity of more than 99.9 percent3、SrCO3、Sm2O3、Fe2O3And Nb2O5As starting material, according to BaCO3:SrCO3:Sm2O3:Fe2O3:Nb2O5Mixing the materials according to a molar ratio of 1:3:0.5:0.25:4.75, then using absolute ethyl alcohol as a ball milling medium, mixing and ball milling the materials for 24 hours, and drying the materials for 4 hours at 100 ℃ to prepare a dried sample;
(2) pre-sintering the dried sample prepared in the step (1) at 1000-1150 ℃ for 4 hours to prepare pre-sintered powder;
(3) grinding the pre-sintered powder prepared in the step (2), then ball-milling for 24 hours by taking absolute ethyl alcohol as a ball-milling medium, uniformly mixing, drying for 4 hours at 100 ℃, then grinding into powder, taking 5-10 wt% of polyvinyl alcohol aqueous solution as a binder for granulation, then sieving with a 60-mesh sieve, pressing and molding, keeping the temperature at 400-600 ℃ for 4-6 hours, discharging colloid, sintering at 1100 ℃ in a high-temperature furnace air atmosphere for 4 hours, and then naturally cooling to room temperature along with the furnace to obtain the X8R type ceramic capacitor dielectric material.
CN201910669871.5A 2019-07-24 2019-07-24 X8R type ceramic capacitor dielectric material and preparation method thereof Active CN110511026B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910669871.5A CN110511026B (en) 2019-07-24 2019-07-24 X8R type ceramic capacitor dielectric material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910669871.5A CN110511026B (en) 2019-07-24 2019-07-24 X8R type ceramic capacitor dielectric material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN110511026A CN110511026A (en) 2019-11-29
CN110511026B true CN110511026B (en) 2022-01-04

Family

ID=68622923

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910669871.5A Active CN110511026B (en) 2019-07-24 2019-07-24 X8R type ceramic capacitor dielectric material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN110511026B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116217228A (en) * 2023-02-25 2023-06-06 桂林理工大学 Perovskite type material Sr 6-2x Nb 2+2x O 11+3x Is prepared by the preparation method of (2)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589441A1 (en) * 1992-09-22 1994-03-30 Matsushita Electric Industrial Co., Ltd. Composition of dielectric ceramics
EP0647602A1 (en) * 1993-10-09 1995-04-12 Philips Patentverwaltung GmbH Substituted barium-neodymium-titanium perovskite, dielectric, ceramic composition and capacitor, and microwave component containing said composition
CN101200369A (en) * 2007-07-27 2008-06-18 桂林电子科技大学 Titanium niobic zincic acid bismuth sodium system leadless piezo-electric ceramic and preparation method thereof
CN101631754A (en) * 2007-02-22 2010-01-20 株式会社村田制作所 Dielectric ceramic composition and multilayer ceramic capacitor
CN103288448A (en) * 2012-02-29 2013-09-11 Tdk株式会社 Dielectric ceramic composition and electronic device
CN103771854A (en) * 2013-12-20 2014-05-07 中国科学院上海硅酸盐研究所 Piezoceramic material and preparation method thereof
CN103833334A (en) * 2013-07-23 2014-06-04 南京智元微波科技有限公司 High-quality-factor microwave ceramic dielectric resonator
CN106565240A (en) * 2016-11-05 2017-04-19 桂林理工大学 Iron-based ceramic capacitor material and preparation method thereof
CN108218423A (en) * 2018-01-11 2018-06-29 桂林理工大学 A kind of X8R types ceramic capacitor dielectric material and preparation method thereof
CN108689711A (en) * 2018-06-13 2018-10-23 合肥工业大学 A kind of thermostable type sodium niobate based leadless piezoelectric ceramics and preparation method thereof
CN109694248A (en) * 2019-03-01 2019-04-30 电子科技大学 High-electric-strength lead-free energy storage dielectric ceramic material and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100594198C (en) * 2005-04-28 2010-03-17 株式会社村田制作所 Piezoelectric ceramic composition, process for producing said piezoelectric ceramic composition, and piezoelectric ceramic electronic component
EP3434658A4 (en) * 2016-03-24 2019-11-27 TDK Corporation Dielectric composition, dielectric element, electronic component and laminate electronic component

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0589441A1 (en) * 1992-09-22 1994-03-30 Matsushita Electric Industrial Co., Ltd. Composition of dielectric ceramics
EP0647602A1 (en) * 1993-10-09 1995-04-12 Philips Patentverwaltung GmbH Substituted barium-neodymium-titanium perovskite, dielectric, ceramic composition and capacitor, and microwave component containing said composition
CN101631754A (en) * 2007-02-22 2010-01-20 株式会社村田制作所 Dielectric ceramic composition and multilayer ceramic capacitor
CN101200369A (en) * 2007-07-27 2008-06-18 桂林电子科技大学 Titanium niobic zincic acid bismuth sodium system leadless piezo-electric ceramic and preparation method thereof
CN103288448A (en) * 2012-02-29 2013-09-11 Tdk株式会社 Dielectric ceramic composition and electronic device
CN103833334A (en) * 2013-07-23 2014-06-04 南京智元微波科技有限公司 High-quality-factor microwave ceramic dielectric resonator
CN103771854A (en) * 2013-12-20 2014-05-07 中国科学院上海硅酸盐研究所 Piezoceramic material and preparation method thereof
CN106565240A (en) * 2016-11-05 2017-04-19 桂林理工大学 Iron-based ceramic capacitor material and preparation method thereof
CN108218423A (en) * 2018-01-11 2018-06-29 桂林理工大学 A kind of X8R types ceramic capacitor dielectric material and preparation method thereof
CN108689711A (en) * 2018-06-13 2018-10-23 合肥工业大学 A kind of thermostable type sodium niobate based leadless piezoelectric ceramics and preparation method thereof
CN109694248A (en) * 2019-03-01 2019-04-30 电子科技大学 High-electric-strength lead-free energy storage dielectric ceramic material and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
High-temperature dielectric relaxation mechanism in Ba4SmFe0.5Nb9.5O30 tungsten bronze ceramics;Hu Changzheng;《Ceramics International》;20180811;第44卷;第S224-S227页 *
系列A5B10O30未填满型钨青铜结构新化合物的制备及其介电特性;朱其华;《万方数据》;20180530;1-70 *

Also Published As

Publication number Publication date
CN110511026A (en) 2019-11-29

Similar Documents

Publication Publication Date Title
CN104446468A (en) X9R ceramic capacitor dielectric material and preparation method thereof
CN105732020B (en) A kind of preparation method of giant dielectric, low-loss titanium dioxide base composite ceramic
CN101560094A (en) High-temperature stable medium material for multilayer ceramic capacitors and preparation method thereof
CA1098303A (en) Method of producing a dielectric with perowskite structure
CN107512906A (en) A kind of anti-reduction X9R type ceramic capacitor dielectric materials and preparation method thereof
CN113061025A (en) Lead-free bismuth sodium titanate-based X9R type ceramic capacitor material and preparation method thereof
US20180362410A1 (en) Ceramic material for multilayer ceramic capacitor and method of making the same
CN108218423A (en) A kind of X8R types ceramic capacitor dielectric material and preparation method thereof
CN110423116B (en) X7R type ceramic capacitor dielectric material and preparation method thereof
CN110511026B (en) X8R type ceramic capacitor dielectric material and preparation method thereof
CN105399405B (en) A kind of low dielectric microwave ferroelectric ceramics and preparation method thereof
CN116761786A (en) Dielectric ceramic composition and multilayer ceramic capacitor comprising the same
CN113045307A (en) High-dielectric low-loss barium titanate-based ceramic and preparation method thereof
CN102503407B (en) Lead-free X8R-type multilayer ceramic capacitor dielectric and preparation method thereof
CN108285342B (en) X8R ceramic capacitor dielectric material and preparation method thereof
CN110963796B (en) Giant dielectric constant low-loss X8R type ceramic capacitor material and preparation method thereof
CN110304916B (en) Anti-reduction BaTiO3Base medium ceramic and preparation method thereof
CN115385688A (en) Barium strontium zirconate titanate-based dielectric ceramic material and preparation method thereof
CN114823140B (en) Medium-temperature sintered X7R type ceramic capacitor dielectric material and preparation method thereof
CN113264762A (en) X8R type ceramic capacitor material and preparation method thereof
CN106866144B (en) Low-temperature sintered ultralow-temperature wide-temperature-stability capacitor ceramic and preparation method thereof
KR100875288B1 (en) Dielectric composition for MLC with excellent Ｙ5Ｖ properties and manufacturing method thereof
CN114436646A (en) Ceramic capacitor material and preparation method thereof
CN116444266B (en) Ba (Bay) 0.6 Sr 0.4 (Ti 0.7 Zr 0.3 )O 3 Preparation method of base dielectric ceramic
CN115172048B (en) Leadless barium titanate-based X9R type ceramic capacitor material and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant