JPWO2008038538A1 - チタン酸バリウム系半導体磁器組成物とそれを用いたptc素子 - Google Patents
チタン酸バリウム系半導体磁器組成物とそれを用いたptc素子 Download PDFInfo
- Publication number
- JPWO2008038538A1 JPWO2008038538A1 JP2008536333A JP2008536333A JPWO2008038538A1 JP WO2008038538 A1 JPWO2008038538 A1 JP WO2008038538A1 JP 2008536333 A JP2008536333 A JP 2008536333A JP 2008536333 A JP2008536333 A JP 2008536333A JP WO2008038538 A1 JPWO2008038538 A1 JP WO2008038538A1
- Authority
- JP
- Japan
- Prior art keywords
- barium titanate
- content
- semiconductor ceramic
- ceramic composition
- based semiconductor
- 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.)
- Granted
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
- C04B35/46—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 titanium oxides or titanates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
- H01C7/023—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
- H01C7/025—Perovskites, e.g. titanates
-
- 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
- C04B35/46—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 titanium oxides or titanates
- C04B35/462—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 titanium oxides or titanates based on titanates
- C04B35/465—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates
- C04B35/468—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
- C04B35/4682—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 titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
-
- 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
- C04B2235/3201—Alkali metal 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3227—Lanthanum oxide 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
- C04B2235/3298—Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/652—Reduction treatment
-
- 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
- C04B2235/658—Atmosphere during thermal treatment
- C04B2235/6583—Oxygen containing atmosphere, e.g. with changing oxygen pressures
- C04B2235/6584—Oxygen containing atmosphere, e.g. with changing oxygen pressures at an oxygen percentage below that of air
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/79—Non-stoichiometric products, e.g. perovskites (ABO3) with an A/B-ratio other than 1
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
- C04B2235/85—Intergranular or grain boundary phases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
まず、チタン酸バリウム系半導体磁器組成物の試料の原材料として、焼成後の組成が、表1の試料番号1〜39のそれぞれに示した組成になるように、BaCO3、TiO2、Na2CO3(試料番号1〜36、38、39)、K2CO3(試料番号37)、Bi2O3、および、半導体化剤であるLa2O3(試料番号1〜37)、Nd2O3(試料番号38)、Sm2O3(試料番号39)の粉末を準備して秤量し、調合した。次に、調合した粉末に有機溶媒としてエタノールを加えてジルコニアボールとともに16時間混合粉砕した後、溶媒を乾燥させて造粒した。得られた造粒粉を800〜1100℃の範囲内の温度で2時間熱処理することにより、仮焼粉を得た。この仮焼粉に、有機バインダとして酢酸ビニル、分散剤としてポリカルボン酸アンモニウム、水、および、シリカ(SiO2)を加えて、ジルコニアボールとともに16時間混合粉砕した。粉砕後のスラリーを乾燥させて造粒した。この造粒粉をプレス用の原料として用いて、一軸プレス加工することにより、単板状の成形体を得た。
まず、チタン酸バリウム系半導体磁器組成物の試料の原材料として、BaCO3、TiO2、Na2CO3、Bi2O3、および、半導体化剤であるLa2O3の粉末を準備した。これらの原材料を、焼成後の組成が表2の試料番号40〜72のそれぞれに示した組成になるように秤量し、調合した。次に、調合した粉末に有機溶媒としてエタノールを加えてジルコニアボールとともに16時間混合粉砕した後、溶媒を乾燥させて造粒した。得られた造粒粉を800〜1100℃の範囲内の温度で2時間熱処理することにより、仮焼粉を得た。この仮焼粉に、有機バインダとして酢酸ビニル、分散剤としてポリカルボン酸アンモニウム、水、および、シリカ(SiO2)を加えて、ジルコニアボールとともに16時間混合粉砕した。粉砕後のスラリーを乾燥させて造粒した。この造粒粉をプレス用の原料として用いて、一軸プレス加工することにより、単板状の成形体を得た。
まず、チタン酸バリウム系半導体磁器組成物の試料の原材料として、BaCO3、TiO2、Na2CO3、Bi2O3、および、半導体化剤であるLa2O3の粉末を焼成後の組成が(Ba0.900Na0.052Bi0.049La0.002)TiO3となるように、秤量・調合した以外は、実施例1と同一の方法でチタン酸バリウム系半導体磁器組成物の試料を作製した。各試料を作製するための焼成保持時間や焼成雰囲気を制御することによって、粒界におけるNaの存在量を変化させた。
Claims (3)
- 少なくともバリウムとチタンとを含むペロブスカイト構造のチタン酸バリウム系半導体磁器組成物であって、
バリウムの一部が、少なくともアルカリ金属元素、ビスマスおよび希土類元素で置換されており、
前記チタンの含有量を100モル部としたとき、前記アルカリ金属元素、前記ビスマスおよび前記希土類元素のモル部で表される各含有量の関係としての、(アルカリ金属元素の含有量)/{(ビスマスの含有量)+(希土類元素の含有量)}の比率が1.00以上1.06以下である、チタン酸バリウム系半導体磁器組成物。 - 前記チタン酸バリウム系半導体磁器組成物の結晶粒界に存在する前記ビスマスと前記アルカリ金属元素のモル部で表わされる含有量の比率として、(アルカリ金属元素の含有量)/(ビスマスの含有量)が1.04以上5.0以下である、請求項1に記載のチタン酸バリウム系半導体磁器組成物。
- 請求項1に記載のチタン酸バリウム系半導体磁器組成物を用いて形成されたセラミック素体と、
前記セラミック素体の表面に形成された電極とを備えた、PTC素子。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008536333A JP5099011B2 (ja) | 2006-09-28 | 2007-09-18 | チタン酸バリウム系半導体磁器組成物とそれを用いたptc素子 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006263711 | 2006-09-28 | ||
JP2006263711 | 2006-09-28 | ||
JP2008536333A JP5099011B2 (ja) | 2006-09-28 | 2007-09-18 | チタン酸バリウム系半導体磁器組成物とそれを用いたptc素子 |
PCT/JP2007/068051 WO2008038538A1 (fr) | 2006-09-28 | 2007-09-18 | Composition de porcelaine semiconductrice de titanate de baryum et dispositif ptc utilisant celle-ci |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2008038538A1 true JPWO2008038538A1 (ja) | 2010-01-28 |
JP5099011B2 JP5099011B2 (ja) | 2012-12-12 |
Family
ID=39229974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008536333A Expired - Fee Related JP5099011B2 (ja) | 2006-09-28 | 2007-09-18 | チタン酸バリウム系半導体磁器組成物とそれを用いたptc素子 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7764161B2 (ja) |
EP (1) | EP2067755A4 (ja) |
JP (1) | JP5099011B2 (ja) |
KR (1) | KR101089893B1 (ja) |
CN (1) | CN101516802B (ja) |
TW (1) | TW200835666A (ja) |
WO (1) | WO2008038538A1 (ja) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2159207B1 (en) | 2007-06-14 | 2016-11-16 | Murata Manufacturing Co. Ltd. | Semiconductor ceramic material |
JP5251119B2 (ja) * | 2007-12-26 | 2013-07-31 | 日立金属株式会社 | 半導体磁器組成物 |
JP5099782B2 (ja) * | 2008-03-28 | 2012-12-19 | ニチコン株式会社 | 正特性サーミスタ磁器組成物 |
JP5263668B2 (ja) * | 2008-10-02 | 2013-08-14 | 日立金属株式会社 | 半導体磁器組成物 |
EP2377837B1 (en) * | 2008-12-12 | 2018-08-08 | Murata Manufacturing Co., Ltd. | Semiconductor ceramic and positive temperature coefficient thermistor |
EP2371788A4 (en) * | 2008-12-12 | 2012-07-04 | Murata Manufacturing Co | SEMICONDUCTOR CERAMICS AND THERMISTOR WITH POSITIVE TEMPERATURE COEFFICIENT |
CN102224119B (zh) * | 2008-12-12 | 2014-03-26 | 株式会社村田制作所 | 半导体陶瓷以及正温度系数热敏电阻 |
WO2010067866A1 (ja) * | 2008-12-12 | 2010-06-17 | 株式会社 村田製作所 | 半導体セラミック及び正特性サーミスタ |
KR20120093834A (ko) * | 2009-10-06 | 2012-08-23 | 히다찌긴조꾸가부시끼가이사 | 반도체 자기 조성물 및 그 제조 방법, ptc 소자 및 발열 모듈 |
JP2011066381A (ja) * | 2010-03-05 | 2011-03-31 | Seiko Epson Corp | 液体噴射ヘッド及びそれを用いた液体噴射装置 |
EP2557575A4 (en) * | 2010-04-08 | 2013-12-11 | Hitachi Metals Ltd | PTC ELEMENT AND HEAT ELEMENT MODULE |
WO2012036142A1 (ja) * | 2010-09-17 | 2012-03-22 | 株式会社 村田製作所 | 正特性サーミスタ及び正特性サーミスタの製造方法 |
EP2774904B1 (en) * | 2011-11-01 | 2017-05-24 | Murata Manufacturing Co., Ltd. | Ptc thermistor and method for manufacturing ptc thermistor |
CN104428847B (zh) * | 2012-07-25 | 2018-01-26 | 株式会社村田制作所 | 层叠型ptc热敏电阻元件 |
DE112014001227B4 (de) * | 2013-03-11 | 2019-10-10 | Tdk Corporation | PTC-Thermistorkeramikzusammensetzung und PTC-Thermistorelement |
WO2016002714A1 (ja) * | 2014-07-02 | 2016-01-07 | 日立金属株式会社 | 半導体磁器組成物およびptc素子 |
JP2017197389A (ja) * | 2014-09-10 | 2017-11-02 | 日立金属株式会社 | 半導体磁器組成物の製造方法、半導体磁器組成物、並びにptc素子 |
JP2017034140A (ja) * | 2015-08-04 | 2017-02-09 | Tdk株式会社 | 半導体磁器組成物およびptcサーミスタ |
JP2017141117A (ja) * | 2016-02-08 | 2017-08-17 | Tdk株式会社 | 半導体磁器組成物およびptcサーミスタ |
WO2019204430A1 (en) | 2018-04-17 | 2019-10-24 | Avx Corporation | Varistor for high temperature applications |
CN113149636A (zh) * | 2020-01-07 | 2021-07-23 | 江苏钧瓷科技有限公司 | 低铅ptc材料 |
CN114394829A (zh) * | 2022-01-07 | 2022-04-26 | 武汉理工大学 | 一种高储能密度钛锂酸钡陶瓷及其制备方法 |
JP2023141203A (ja) * | 2022-03-23 | 2023-10-05 | 日本碍子株式会社 | セラミックス体、ハニカム構造体、セラミックス体の製造方法、及びヒーターエレメント |
CN115403371B (zh) * | 2022-09-19 | 2023-06-13 | 辽宁佳宇电子产品有限公司 | 一种ptc热敏电阻及其制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56169301A (en) * | 1980-06-02 | 1981-12-26 | Tohoku Metal Ind Ltd | Method of producing barium titanate semiconductor porcelain |
JP2005255493A (ja) * | 2004-03-12 | 2005-09-22 | Neomax Co Ltd | 半導体磁器組成物 |
WO2006118274A1 (ja) * | 2005-04-28 | 2006-11-09 | Hitachi Metals, Ltd. | 半導体磁器組成物とその製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE511613A (ja) * | 1951-05-23 | |||
JPS54105113A (en) * | 1978-02-06 | 1979-08-17 | Ngk Insulators Ltd | Barium titanate base positive characteristic porcelain |
JPS57157502A (en) * | 1981-03-24 | 1982-09-29 | Murata Manufacturing Co | Barium titanate series porcelain composition |
JP2558489B2 (ja) * | 1988-03-01 | 1996-11-27 | 株式会社クラベ | 正特性半導体磁器 |
DE4221309A1 (de) * | 1992-06-29 | 1994-01-05 | Abb Research Ltd | Strombegrenzendes Element |
JP3245984B2 (ja) * | 1992-07-24 | 2002-01-15 | 株式会社村田製作所 | 負の抵抗温度特性を有するチタン酸バリウム系半導体磁器及びその製造方法 |
WO1998011568A1 (fr) * | 1996-09-13 | 1998-03-19 | Tdk Corporation | Materiau pour thermistor a ctp |
US5837164A (en) * | 1996-10-08 | 1998-11-17 | Therm-O-Disc, Incorporated | High temperature PTC device comprising a conductive polymer composition |
JPH11116326A (ja) * | 1997-10-06 | 1999-04-27 | Matsushita Electric Ind Co Ltd | 正特性サーミスタおよびその製造方法 |
JP3812268B2 (ja) * | 1999-05-20 | 2006-08-23 | 株式会社村田製作所 | 積層型半導体セラミック素子 |
CN1204085C (zh) * | 2003-06-05 | 2005-06-01 | 中国科学院上海硅酸盐研究所 | 离子掺杂的钛酸铋钠-钛酸钡体系压电陶瓷及其制备方法 |
-
2007
- 2007-09-18 CN CN2007800359370A patent/CN101516802B/zh not_active Expired - Fee Related
- 2007-09-18 EP EP07807452.3A patent/EP2067755A4/en not_active Withdrawn
- 2007-09-18 WO PCT/JP2007/068051 patent/WO2008038538A1/ja active Application Filing
- 2007-09-18 KR KR1020097006220A patent/KR101089893B1/ko active IP Right Grant
- 2007-09-18 JP JP2008536333A patent/JP5099011B2/ja not_active Expired - Fee Related
- 2007-09-27 TW TW096136008A patent/TW200835666A/zh not_active IP Right Cessation
-
2009
- 2009-03-27 US US12/413,254 patent/US7764161B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56169301A (en) * | 1980-06-02 | 1981-12-26 | Tohoku Metal Ind Ltd | Method of producing barium titanate semiconductor porcelain |
JP2005255493A (ja) * | 2004-03-12 | 2005-09-22 | Neomax Co Ltd | 半導体磁器組成物 |
WO2006118274A1 (ja) * | 2005-04-28 | 2006-11-09 | Hitachi Metals, Ltd. | 半導体磁器組成物とその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2067755A1 (en) | 2009-06-10 |
US20090201121A1 (en) | 2009-08-13 |
CN101516802A (zh) | 2009-08-26 |
TWI346094B (ja) | 2011-08-01 |
EP2067755A4 (en) | 2016-02-10 |
KR101089893B1 (ko) | 2011-12-05 |
CN101516802B (zh) | 2011-11-23 |
US7764161B2 (en) | 2010-07-27 |
KR20090045394A (ko) | 2009-05-07 |
JP5099011B2 (ja) | 2012-12-12 |
WO2008038538A1 (fr) | 2008-04-03 |
TW200835666A (en) | 2008-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5099011B2 (ja) | チタン酸バリウム系半導体磁器組成物とそれを用いたptc素子 | |
JP6337689B2 (ja) | 半導体磁器組成物およびptcサーミスタ | |
JP5327556B2 (ja) | 半導体セラミック及び正特性サーミスタ | |
JP5327555B2 (ja) | 半導体セラミック及び正特性サーミスタ | |
JP5327553B2 (ja) | 半導体セラミック及び正特性サーミスタ | |
EP2966050B1 (en) | Semiconductor ceramic composition and ptc thermistor | |
EP3127889B1 (en) | Semiconductor ceramic composition and ptc thermistor | |
EP3202746A1 (en) | Semiconductor ceramic composition and ptc thermistor | |
JP5223927B2 (ja) | チタン酸バリウム系半導体磁器組成物及びptcサーミスタ | |
JP4788274B2 (ja) | Ctr特性を有する酸化物導電体磁器および抵抗体 | |
JP2016184694A (ja) | 半導体磁器組成物およびptcサーミスタ | |
JP2012209292A (ja) | 正特性サーミスタ | |
JP2013182932A (ja) | Ptc素子の電極形成方法、及びptc素子 | |
JP2010138044A (ja) | 半導体セラミック及び正特性サーミスタ | |
WO2012111385A1 (ja) | 正特性サーミスタ | |
WO2012036142A1 (ja) | 正特性サーミスタ及び正特性サーミスタの製造方法 | |
JPH1112033A (ja) | チタン酸バリウム鉛系半導体磁器組成物 | |
JPH09100157A (ja) | 電圧非直線性抵抗体磁器 | |
JPH08213206A (ja) | 正特性サーミスタおよびその製造方法 | |
JPH10212161A (ja) | 正特性サーミスタ材料及びその製造方法 | |
JP2002338346A (ja) | 電圧依存性非直線抵抗体 | |
JPH1112030A (ja) | チタン酸バリウム鉛系半導体磁器組成物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20111213 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120209 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120828 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120910 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151005 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5099011 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
LAPS | Cancellation because of no payment of annual fees |