CN110423116B - 一种x7r型陶瓷电容器介质材料及其制备方法 - Google Patents

一种x7r型陶瓷电容器介质材料及其制备方法 Download PDF

Info

Publication number
CN110423116B
CN110423116B CN201910669855.6A CN201910669855A CN110423116B CN 110423116 B CN110423116 B CN 110423116B CN 201910669855 A CN201910669855 A CN 201910669855A CN 110423116 B CN110423116 B CN 110423116B
Authority
CN
China
Prior art keywords
hours
ceramic capacitor
dielectric material
capacitor dielectric
type ceramic
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
CN201910669855.6A
Other languages
English (en)
Other versions
CN110423116A (zh
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 CN201910669855.6A priority Critical patent/CN110423116B/zh
Publication of CN110423116A publication Critical patent/CN110423116A/zh
Application granted granted Critical
Publication of CN110423116B publication Critical patent/CN110423116B/zh
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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • 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
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • 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
    • 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
    • C04B35/638—Removal thereof
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3213—Strontium oxides or oxide-forming salts thereof
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3215—Barium oxides or oxide-forming salts thereof
    • 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
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • 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
    • C04B2235/65—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

Abstract

本发明公开了一种X7R型陶瓷电容器介质材料及其制备方法。将碳酸钡、碳酸锶、三氧化二钐、三氧化二铁和五氧化二铌先球磨，细化原料，根据名义化学式按化学计量比配料，经预烧、二次球磨等工序，利用固相反应过程，最终制得X7R型陶瓷电容器介质材料Ba2Sr2SmFe0.5Nb9.5O30。本发明方法可获得优良的温度稳定性介电陶瓷材料，满足EIA X7R标准；本发明方法简单，节能减排，成本适中，适合批量生产。

Description

一种X7R型陶瓷电容器介质材料及其制备方法
技术领域
本发明涉及一种X7R型陶瓷电容器介质材料及其制备方法，属于电子材料与器件技术领域。
背景技术
电容器是一类重要的无源电子器件，是电子、通信及信息产业中所不可或缺的器件，可以起到储存电荷、隔断直流、交流虑波、提供调谐及震荡等。近年来随着电子产业的不断发展，市场上对陶瓷电容器的要求也越来越高，既要小型化也要可靠性高。根据国际电子工业协会EIA(Electronic Industries Association)标准，X7R型MLCC是指以25℃的电容值为基准，在温度从-55℃到+125℃的范围内，电容变化率(ΔC/C25)≤±15％。X7R型MLCC在各种电子终端设备上已获得广泛应用的应用。当前铅基铁电X7R型陶瓷系统运用较为广泛，但是因为该系统中含铅，在生产和应用过程中会对人体和环境造成极大的危害。因此，研发具有X7R特性的无铅介电材料具有重要的意义与实际运用价值。本发明采用钨青铜结构，有助于拓展陶瓷电容器材料的结构类型，减少铅基陶瓷对人体和环境造成的危害。
发明内容
本发明的目的是提供一种X7R型陶瓷电容器介质材料及其制备方法。
本发明的X7R型陶瓷电容器介质材料的名义化学式为Ba2Sr2SmFe0.5Nb9.5O30。
制备上述的X7R型陶瓷电容器介质材料的方法的具体步骤为：
(1)将纯度大于99.9％的BaCO3、SrCO3、Sm2O3、Fe2O3和Nb2O5作为起始原料，按照BaCO3:SrCO3:Sm2O3:Fe2O3:Nb2O5＝2:2:0.5:0.25:4.75的摩尔比进行配料，以无水乙醇为球磨介质，混合球磨24小时，于100℃下烘干4小时，制得烘干样品。
(2)把步骤(1)制得的烘干样品在1000～1150℃预烧结4小时，制得预烧后的粉体。
(3)将步骤(2)制得的预烧后的粉体研碎，再以无水乙醇为球磨介质球磨24小时混合均匀，于100℃下烘干4小时后研磨成粉状，加入8wt％的聚乙烯醇水溶液，造粒，然后过60目筛后压制成型，于400～600℃下保温3～5小时排出胶体，再在高温炉空气气氛中1100～1300℃烧结4～10小时后随炉自然冷却至室温，即制得X7R型陶瓷电容器介质材料。
本发明采用传统的固相法制备介质材料，在中温下烧结即可获得性能优良的X7R型陶瓷材料，工艺简单，成本低廉，对环境无害，且所制得的X7R型陶瓷电容器介质材料的温度稳定性好，能够在-55～125℃的范围内满足(ΔC/C25)≤±15％，满足EIA的X7R标准；本发明所提供的陶瓷电容器介质材料及其制备方法，具有良好的产业化前景。
附图说明
图1为本发明实施例制得的Ba2Sr2SmFe0.5Nb9.5O30陶瓷电容器介质材料的X射线衍射图谱。
图2为本发明实施例制得的Ba2Sr2SmFe0.5Nb9.5O30陶瓷电容器介质材料的表面显微形貌照片。
图3为本发明实施例制得的Ba2Sr2SmFe0.5Nb9.5O30陶瓷电容器介质材料的介电常数随温度变化的规律图。
图4为本发明实施例制得的Ba2Sr2SmFe0.5Nb9.5O30陶瓷电容器介质材料的电容变化率随温度变化的规律图，从图中看出，在室温时介电常数变化在±15％以内。
具体实施方式
实施例1：
将纯度均为99.99％的BaCO3、SrCO3、Sm2O3、Fe2O3和Nb2O5原料按化学计量比为Ba2Sr2SmFe0.5Nb9.5O30配料放入球磨罐中；选择氧化锆球和尼龙罐；所加原料质量为磨球质量的8％；混合球磨时间为24小时，转速为350转/分钟，球磨介质为无水乙醇；所得产物置于100℃的烘箱中烘干4小时，以5℃/分的升温速率升至1000℃预烧结4小时；取出预烧后的粉体研碎，再以无水乙醇为球磨介质球磨24小时混合均匀，于100℃下烘干4小时后研磨成粉状，用质量百分浓度为8％的聚乙烯醇水溶液作为粘结剂造粒，过60目的筛子后在100MPa压强下压成直径为10mm，厚度为1mm的圆片状生坯，以1.5℃/分的升温速率升至400℃，保温3小时排出胶体，再以5℃/分的升温速率升至1100℃于高温炉空气气氛中保温4小时进行烧结，最后随炉自然冷却至室温，即制得X7R型陶瓷电容器介质材料Ba2Sr2SmFe0.5Nb9.5O30。
实施例2：
将纯度均为99.99％的BaCO3、SrCO3、Sm2O3、Fe2O3和Nb2O5原料按化学计量比为Ba2Sr2SmFe0.5Nb9.5O30配料放入球磨罐中；选择氧化锆球和尼龙罐；所加原料质量为磨球质量的8％；混合球磨时间为24小时，转速为350转/分钟，球磨介质为无水乙醇；所得产物置于100℃的烘箱中烘干4小时，以5℃/分的升温速率升至1100℃预烧结4小时；取出预烧后的粉体研碎，再以无水乙醇为球磨介质球磨24小时混合均匀，于100℃下烘干4小时后研磨成粉状，用质量百分浓度为8％的聚乙烯醇水溶液作为粘结剂造粒，过60目的筛子后在100MPa压强下压成直径为10mm，厚度为1mm的圆片状生坯，以1.5℃/分的升温速率升至550℃，保温4小时排出胶体，再以5℃/分的升温速率升至1250℃于高温炉空气气氛中保温6小时进行烧结，最后随炉自然冷却至室温，即制得X7R型陶瓷电容器介质材料Ba2Sr2SmFe0.5Nb9.5O30。
实施例3：
将纯度均为99.99％的BaCO3、SrCO3、Sm2O3、Fe2O3和Nb2O5原料按化学计量比为Ba2Sr2SmFe0.5Nb9.5O30配料放入球磨罐中；选择氧化锆球和尼龙罐；所加原料质量为磨球质量的8％；混合球磨时间为24小时，转速为350转/分钟，球磨介质为无水乙醇；所得产物置于100℃的烘箱中烘干4小时，以5℃/分的升温速率升至1150℃预烧结4小时；取出预烧后的粉体研碎，再以无水乙醇为球磨介质球磨24小时混合均匀，于100℃下烘干4小时后研磨成粉状，用质量百分浓度为8％的聚乙烯醇水溶液作为粘结剂造粒，过60目的筛子后在100MPa压强下压成直径为10mm，厚度为1mm的圆片状生坯，以1.5℃/分的升温速率升至600℃，保温5小时排出胶体，再以5℃/分的升温速率升至1300℃于高温炉空气气氛中保温10小时进行烧结，最后随炉自然冷却至室温，即制得X7R型陶瓷电容器介质材料Ba2Sr2SmFe0.5Nb9.5O30。
将上述实施例制得的X7R型陶瓷电容器介质材料两侧均烧上银电极，制成圆片电容器，然后测试并计算该介质材料的相对介电常数随温度的变化情况，如附图3所示，Ba2Sr2SmFe0.5Nb9.5O30陶瓷材料在很宽的温度区间内具有平稳的温度特性，满足X7R标准，即电容变化率在-55～125℃范围内不超过±15％，能作为X7R型陶瓷电容器介质材料。

Claims (2)

1.一种X7R型陶瓷电容器介质材料，其特征在于该X7R型陶瓷电容器介质材料的名义化学式为Ba2Sr2SmFe0.5Nb9.5O30。
2.根据权利要求1所述的X7R型陶瓷电容器介质材料的制备方法，其特征在于具体步骤为：
(1)将纯度大于99.9％的BaCO3、SrCO3、Sm2O3、Fe2O3和Nb2O5作为起始原料，按照BaCO3:SrCO3:Sm2O3:Fe2O3:Nb2O5＝2:2:0.5:0.25:4.75的摩尔比进行配料，以无水乙醇为球磨介质，混合球磨24小时，于100℃下烘干4小时，制得烘干样品；
(2)把步骤(1)制得的烘干样品在1000～1150℃预烧结4小时，制得预烧后的粉体；
(3)将步骤(2)制得的预烧后的粉体研碎，再以无水乙醇为球磨介质球磨24小时混合均匀，于100℃下烘干4小时后研磨成粉状，以8wt％的聚乙烯醇水溶液作为粘结剂造粒，然后过60目筛后压制成型，于400～600℃下保温3～5小时排出胶体，再在高温炉空气气氛中1100～1300℃烧结4～10小时后随炉自然冷却至室温，即制得X7R型陶瓷电容器介质材料。
CN201910669855.6A 2019-07-24 2019-07-24 一种x7r型陶瓷电容器介质材料及其制备方法 Active CN110423116B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910669855.6A CN110423116B (zh) 2019-07-24 2019-07-24 一种x7r型陶瓷电容器介质材料及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910669855.6A CN110423116B (zh) 2019-07-24 2019-07-24 一种x7r型陶瓷电容器介质材料及其制备方法

Publications (2)

Publication Number Publication Date
CN110423116A CN110423116A (zh) 2019-11-08
CN110423116B true CN110423116B (zh) 2021-07-02

Family

ID=68410489

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910669855.6A Active CN110423116B (zh) 2019-07-24 2019-07-24 一种x7r型陶瓷电容器介质材料及其制备方法

Country Status (1)

Country Link
CN (1) CN110423116B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111498902B (zh) * 2020-03-20 2022-08-09 桂林理工大学 一种利用摩擦催化高效降解染料污水的亚微米粉及其制备方法
CN114823140B (zh) * 2022-05-06 2023-11-17 桂林理工大学 一种中温烧结x7r型陶瓷电容器介质材料及其制备方法

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2068931A (en) * 1980-02-08 1981-08-19 Centralab Inc Grain boundary barrier layer ceramic capacitors and ceramic dielectric compositions
JPH01175702A (ja) * 1987-12-29 1989-07-12 Matsushita Electric Ind Co Ltd 電圧依存性非直線抵杭体磁器組成物
US4978646A (en) * 1989-03-03 1990-12-18 Corning Incorporated Capacitors and high dielectric constant ceramics therefor
DE4406812C1 (de) * 1994-03-02 1995-07-06 Fraunhofer Ges Forschung Niedrig sinternde keramische Dielektrika mit hohen DK-Werten für Green-Tape-Systeme
CN1148582A (zh) * 1996-07-31 1997-04-30 清华大学 铌镁酸铅基温度稳定型驰豫铁电陶瓷组成及制备工艺
CN1249286A (zh) * 1998-09-28 2000-04-05 株式会社村田制作所 介电陶瓷组合物及叠层陶瓷电容器
EP1178025A2 (en) * 2000-07-28 2002-02-06 TDK Corporation Piezoelectric ceramic material
CN1473139A (zh) * 2001-06-27 2004-02-04 日本碍子株式会社 低温烧成瓷器及其电子部件
CN101314545A (zh) * 2008-07-02 2008-12-03 广东风华高新科技股份有限公司 一种制备电介质陶瓷粉体的喷雾包覆方法及所得的产品
CN101531512A (zh) * 2009-04-11 2009-09-16 桂林工学院 一种温度稳定型钨青铜结构介电陶瓷及其制备方法
WO2010023575A1 (en) * 2008-08-26 2010-03-04 Nxp B.V. A capacitor and a method of manufacturing the same
CN103288448A (zh) * 2012-02-29 2013-09-11 Tdk株式会社 介电体陶瓷组合物以及电子部件
CN103771854A (zh) * 2013-12-20 2014-05-07 中国科学院上海硅酸盐研究所 压电陶瓷材料及其制备方法
CN104817323A (zh) * 2015-04-20 2015-08-05 桂林理工大学 温度稳定型陶瓷电容器介质材料Sr4GdTiNb9O30及其制备方法
CN108218423A (zh) * 2018-01-11 2018-06-29 桂林理工大学 一种x8r型陶瓷电容器介质材料及其制备方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5835013B2 (ja) * 2012-02-29 2015-12-24 Tdk株式会社 誘電体磁器組成物および電子部品

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2068931A (en) * 1980-02-08 1981-08-19 Centralab Inc Grain boundary barrier layer ceramic capacitors and ceramic dielectric compositions
JPH01175702A (ja) * 1987-12-29 1989-07-12 Matsushita Electric Ind Co Ltd 電圧依存性非直線抵杭体磁器組成物
US4978646A (en) * 1989-03-03 1990-12-18 Corning Incorporated Capacitors and high dielectric constant ceramics therefor
DE4406812C1 (de) * 1994-03-02 1995-07-06 Fraunhofer Ges Forschung Niedrig sinternde keramische Dielektrika mit hohen DK-Werten für Green-Tape-Systeme
CN1148582A (zh) * 1996-07-31 1997-04-30 清华大学 铌镁酸铅基温度稳定型驰豫铁电陶瓷组成及制备工艺
CN1249286A (zh) * 1998-09-28 2000-04-05 株式会社村田制作所 介电陶瓷组合物及叠层陶瓷电容器
EP1178025A2 (en) * 2000-07-28 2002-02-06 TDK Corporation Piezoelectric ceramic material
CN1335284A (zh) * 2000-07-28 2002-02-13 Tdk株式会社 压电陶瓷
CN1473139A (zh) * 2001-06-27 2004-02-04 日本碍子株式会社 低温烧成瓷器及其电子部件
CN101314545A (zh) * 2008-07-02 2008-12-03 广东风华高新科技股份有限公司 一种制备电介质陶瓷粉体的喷雾包覆方法及所得的产品
WO2010023575A1 (en) * 2008-08-26 2010-03-04 Nxp B.V. A capacitor and a method of manufacturing the same
CN101531512A (zh) * 2009-04-11 2009-09-16 桂林工学院 一种温度稳定型钨青铜结构介电陶瓷及其制备方法
CN103288448A (zh) * 2012-02-29 2013-09-11 Tdk株式会社 介电体陶瓷组合物以及电子部件
JP2013180907A (ja) * 2012-02-29 2013-09-12 Tdk Corp 誘電体磁器組成物および電子部品
CN103771854A (zh) * 2013-12-20 2014-05-07 中国科学院上海硅酸盐研究所 压电陶瓷材料及其制备方法
CN104817323A (zh) * 2015-04-20 2015-08-05 桂林理工大学 温度稳定型陶瓷电容器介质材料Sr4GdTiNb9O30及其制备方法
CN108218423A (zh) * 2018-01-11 2018-06-29 桂林理工大学 一种x8r型陶瓷电容器介质材料及其制备方法

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
Effect of strontium substitution on the structure and dielectric properties of unfilled tungsten bronze Ba4-xSrxSmFe0.5Nb9.5O30 ceramics;Shan Wu 等;《Ceramics International》;20191223;第46卷;9240-9248 *
Effects of Sr-substitution on structure, dielectric, ferroelectric and magnetic properties of (SrxBa1-x)4Sm2Fe2Nb8O30 ceramics;Jiang Sheng Hong 等;《Journal of Alloys and Compounds》;20180814;第770卷;143-148 *
Relaxor behavior and ferroelectric properties of a new Ba4SmFe0.5Nb9.5O30 tungsten bronze ceramic;ZhenSun;《CeramicsInternational》;20160623;第42卷;14999-15004 *
Wang Chen.Structural, dielectric and magnetic properties of Ba3SrLn2Fe2Nb8O30 (Ln ¼La, Nd, Sm) filled tungsten bronze ceramics.《Journal of Alloys and Compounds》.2016,第675卷311-316. *
新型无铅铌、钽酸盐陶瓷的制备与介电、铁电特性研究;胡长征;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;20101115(第11期);B015-22 *

Also Published As

Publication number Publication date
CN110423116A (zh) 2019-11-08

Similar Documents

Publication Publication Date Title
TWI573775B (zh) Ceramic capacitor dielectric material
CN110423116B (zh) 一种x7r型陶瓷电容器介质材料及其制备方法
CN101805185A (zh) 一种制备铌镁酸铅钛酸铅弛豫铁电陶瓷的方法
CN104446468A (zh) 一种x9r型陶瓷电容器介质材料及其制备方法
CN113061025A (zh) 一种无铅钛酸铋钠基x9r型陶瓷电容器材料及其制备方法
CN108218423A (zh) 一种x8r型陶瓷电容器介质材料及其制备方法
US20180362410A1 (en) Ceramic material for multilayer ceramic capacitor and method of making the same
CN105399405B (zh) 一种低介微波铁电陶瓷及其制备方法
CN110511026B (zh) 一种x8r型陶瓷电容器介质材料及其制备方法
CN108863349A (zh) 一种钛酸钡基无铅高介温度稳定型陶瓷材料及其制备方法
CN102963928A (zh) 锆钛酸钡基 y5v粉体材料及其制备方法
CN113045307A (zh) 一种高介电低损耗钛酸钡基陶瓷及其制备方法
CN108285342B (zh) 一种x8r陶瓷电容器介质材料及其制备方法
CN102503407B (zh) 无铅x8r型多层陶瓷电容器介质及其制备方法
CN108129145B (zh) 一种x7r陶瓷电容器介质材料及其制备方法
CN107746271B (zh) 低频低介电损耗的AgTa共掺二氧化钛基介电陶瓷材料及其制备方法
CN110963796B (zh) 一种巨介电常数低损耗x8r型陶瓷电容器材料及其制备方法
CN102399083B (zh) 介电陶瓷组合物
CN106565234B (zh) 一种超高介电常数介电材料及其制备方法
CN114823140B (zh) 一种中温烧结x7r型陶瓷电容器介质材料及其制备方法
CN110304916B (zh) 一种抗还原BaTiO3基介质陶瓷及制备方法
CN113264762A (zh) 一种x8r型陶瓷电容器材料及其制备方法
CN115172048B (zh) 一种无铅钛酸钡基x9r型陶瓷电容器材料及其制备方法
CN110577401A (zh) 一种二氧化钛基介质材料的制备方法
CN115626823B (zh) 一种钛酸钡基陶瓷电介质材料及其制备方法

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