CN103693955B - Ceramic material of ceramic capacitor and manufacturing method thereof - Google Patents

Ceramic material of ceramic capacitor and manufacturing method thereof Download PDF

Info

Publication number
CN103693955B
CN103693955B CN201310283121.7A CN201310283121A CN103693955B CN 103693955 B CN103693955 B CN 103693955B CN 201310283121 A CN201310283121 A CN 201310283121A CN 103693955 B CN103693955 B CN 103693955B
Authority
CN
China
Prior art keywords
porcelain
additive
ceramic
value
ceramic material
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.)
Expired - Fee Related
Application number
CN201310283121.7A
Other languages
Chinese (zh)
Other versions
CN103693955A (en
Inventor
陈玉林
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.)
BAOJI YUXIN ELECTRONIC Co Ltd
Original Assignee
BAOJI YUXIN ELECTRONIC Co Ltd
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 BAOJI YUXIN ELECTRONIC Co Ltd filed Critical BAOJI YUXIN ELECTRONIC Co Ltd
Priority to CN201310283121.7A priority Critical patent/CN103693955B/en
Publication of CN103693955A publication Critical patent/CN103693955A/en
Application granted granted Critical
Publication of CN103693955B publication Critical patent/CN103693955B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

A ceramic material of ceramic capacitors and a manufacturing method thereof. The ceramic material is prepared from the following raw materials by wt%: 73-82% of BaTiO3, 4-12% of CaTiO3, 7-15% of BaZrO3, 3-8% of BaSnO3, 0.2-5% of additives, 0.3-1.2% of Bi2O3.3TiO2, 0.1-0.2% of ZnO, 0.1-0.3% of CuO, and 0.1-0.2% of MnCO3. The additive is prepared from SiO2, Al2O3, BiO3, and Nd2O3 according to a weight ratio of 1:1:1:1. The manufacturing method comprises the following steps: preparing the raw materials according to the weight percents, orderly adding the prepared raw materials into a stirring ball mill, performing mixing and ball milling for 3-4 hours, performing sand milling and refining for 4-5 hours, drying, crushing, and sieving to obtain the ceramic material. The ceramic material of the invention increases the [epsilon]r value of 2E4 ceramic capacitor dielectric materials from about 8000 to about 10000, maintains the temperature properties to meet requirements for 2E4, expands the application scope of 2E4 materials, and reduces the production cost of ceramic capacitors.

Description

A kind of ceramic condenser porcelain and manufacture method thereof
Technical field
The invention belongs to technical field of electronic materials, be specifically related to a kind of ceramic condenser porcelain and manufacture method thereof.
Background technology
(ε is r) higher, and the stationary value (△ C/C) of its electrical capacity-temperature is just poorer for the specific inductivity of the existing ceramic medium material of production department's research and development.2E4 ceramic medium material is a kind of ε r value higher (being generally 8000 left and right), the ceramic condenser dielectric material that electrical capacity-temperature stability is good.But also usually due to the specific inductivity of this material, (ε is r) on the low side, causes with the large capacity of electrical condenser volume of its manufacture littlely, is difficult to meet service requirements in actual applications.
Summary of the invention
The technical problem that the present invention solves: a kind of ceramic condenser porcelain and manufacture method thereof are provided, that a kind of ε r value is 10000 left and right, temperature profile meets the stupalith that 2E4 requires, and has expanded the range of application of 2E4 material, has reduced the production cost of ceramic condenser.
Mentality of designing of the present invention: at BTiO 3in material system, being not difficult to obtain the ceramic medium material with higher ε r value, is not easy thing but obtain lower electrical capacity and the velocity of variation (△ C/C value) of temperature again simultaneously.The invention provides a kind of new material system, select effective additive and manufacture method, in obtaining higher ε r value (ε r >=9000), its △ C/C value can also reach the standard-required of 2E4 group.
1, the selection of high ε r value ceramic medium material system.According to BaTiO 3the system convention principles of formulating prescriptions, the present invention selects BaTiO 3-BaSnO 3-BaZrO 3-CaTiO 3system.
Its dielectric properties are:
As seen from the above table, dielectric constant value is higher, but the positive Wen Duan of △ C/C value exceeds standard, and needs to adjust formula and doping improves △ C/C value.
2, adjust material system proportioning raw materials to improve △ C/C value.
2.1, BaZrO 3add-on △ C/C value is affected.BaZrO 3in this system, to regulate Curie temperature to obtain the topmost material of high ε r value.Difference that simultaneously again can balanced △ C/C high and low temperature terminal number value.In test, find, along with BaZrO 3the increase of add-on, Curie temperature is shifted to low temperature.The numerical value of △ C/C low-temperature end also diminishes simultaneously, if content reduces, its effect is contrary.So BaZrO in system 3content be very important.
2.2, CaTiO 3the impact of add-on on △ C/C value.According to Introduction of Literatures BaTiO 3in system, add CaTiO 3there is the effect of significant voltage crest and level and smooth temperature characteristics.Applicant has confirmed too this point in experiment.Refer to following table:
3, the impact of additive on △ C/C.
3.1, in test, find the appropriate Bi of interpolation 2o 3.nTiO 2can improve △ C/C value.If dosage too much will make ε r value significantly decline, dosage is very few does not have the effect that improves △ C/C value.General add-on is advisable 0.5～1.5%.
3.2, combination additive SiO 2, Al 2o 3, Bi 2o 3, Nd 2o 3be used for preparing porcelain, can obviously improve ε r20 DEG C value and △ C/C value.
3.3, compound interpolation ZnO, CuO and MnCO 3on the impact of porcelain performance.Compound interpolation ZnO, CuO and MnCO 3except having verified described in document, improve dielectric strength and improve outside ε r, can also improve △ C/C value, particularly-25 DEG C of temperature end △ C/C values obviously decline, and have improved sintering process simultaneously, and resistance to reduction strengthens, and porcelain piece outward appearance consistence improves.
4, the impact of starting material on performance.Following table is under composition and engineering the same terms, the porcelain performance of selecting two kinds of different BaCO3 raw materials to obtain.
High-purity BaCO as seen from the above table 3can obviously improve ε r value and improve △ C/C value.
5, the impact of manufacturing process on performance.
5.1, in test, find, through the porcelain of fine grinding processing, can obviously improve △ C/C value
5.2, the low melting point additive adding in porcelain is taked to give first and syntheticly to be burnt piece, then adds and more can obtain the good effect of mixing.
Technical solution of the present invention: porcelain of the present invention is made up of the raw material of following wt%: BaTiO 373～82, CaTiO 34～12, BaZrO 37～15, BaSnO 33～8, additive 0.2～5, Bi 2o 33TiO 20.3～1.2, ZnO0.1～0.2, CuO0.1～0.3, MnCO 30.1～0.2;
Described additive is by SiO 2, Al 2o 3, BiO 3, Nd 2o 3press 1:1:1:1 weight ratio formulated.
The preparation method of porcelain of the present invention:
Step 1: piece material is burnt in preparation; Adopt high-purity grade of BaCO of purity>=99.5% 3, technical grade or by sub level TiO 2, ZrO 2, SnO 2, Bi 2o 3, CaCO 3starting material, by mole calculating proportioning raw materials such as each compounds, adopt the synthetic BaTiO of solid phase synthesis process 3, CaTiO 3, BaSnO 3, BaZrO 3, Bi 2o 33TiO 2burn piece material for subsequent use;
Step 2: combination additive, by SiO 2, Al 2o 3, Bi 2o 3, Nd 2o 3add successively to stir in mill by described weight ratio and mix fine grinding 2-3 hour, draining is for subsequent use after dry, pulverize and sieving;
Step 3: by described wt% proportioning raw material, then the burning piece material, additive and other raw material that prepare are added to mixing and ball milling 3-4 hour in agitating ball mill successively, sand milling refinement dry, pulverize after 4-5 hour to sieve and obtains porcelain;
Step 4: porcelain is carried out to electrical property detection.
The material of described mixing and ball milling, sand milling refinement: ball: water=1:2:0.8～1.0.
The advantage that the present invention compared with prior art has and effect:
1, the present invention makes the ε r value of 2E4 ceramic capacitor dielectric material bring up to 10000 left and right by existing 8000 left and right, and has kept temperature profile to meet the requirement of 2E4, has expanded the range of application of 2E4 material, has reduced the production cost of ceramic condenser.
2, the ceramic condenser that adopts the present invention to manufacture, little with content volume, on the contrary same volume capacity is large, has expanded the range of application of product, has reduced production cost.
3, salient features of the present invention sees the following form:
Embodiment
Embodiment 1:
The first step: various burning pieces are synthetic.Adopt high-purity grade of BaCO of purity>=99.5% 3, technical grade or electronic-grade TiO 2, ZrO 2, SnO 2, Bi 2o 3, CaCO 3starting material, by mole calculating proportioning raw materials such as each compounds, adopt the synthetic BaTiO of solid phase synthesis process 3, CaTiO 3, BaSnO 3, BaZrO 3, Bi 2o 33TiO 2burn piece material.Synthesis technique belongs to electronic ceramics common process, wherein BaTiO 3synthesis temperature is 1240 DEG C/2h, CaTiO 3synthesis temperature is 1385 DEG C/2h, BaSnO 3and BaZrO 3synthesis temperature is 1320 DEG C/2h, Bi 2o 33TiO 2synthesis temperature is 850 DEG C/2h.Various burning piece material are burnt respectively to piece electrical property after pulverizing 120 mesh sieves and detect, qualified rear pack is for subsequent use.
Detection method: the burning piece material preparing is mixed with after porcelain sample dry-pressing formed by described ceramic formula, in resistance pusher furnace, under 1280 DEG C of-1320 DEG C/1.5-2h conditions, sinter ceramic of compact sheet into, and two sides by silver electrode, conventional sense ε r, tg δ, △ C/C and dielectric strength.Detected result meet following table require be considered as qualified.
Second step: the manufacture of porcelain
Ceramic formula (wt%): BaTi 3: 78, CaTiO 3: 6, BaZrO 3: 8, BaSnO 3: 5, additive: 1.5, Bi 2o 33TiO2:0.8; ZnO:0.2, MnCO 3: 0.2, CuO:0.3;
Described additive formula (wt%): SiO 2: 25, Al 2o 3: 25, BiO 3: 25, Nd 2o 3: 25.By SiO 2, Al 2o 3, Bi 2o 3, Nd 2o 3add successively to stir in mill by described weight ratio and mix fine grinding 2-3 hour, draining dry, pulverize after 120 mesh sieves for subsequent use;
Porcelain manufacturing process: first by above-mentioned weight ratio proportioning raw material, then by the burning piece material, additive and other raw materials that prepare, add successively in agitating ball mill in material: ball: the ratio mixing and ball milling of water=1:2:0.8～1.0 4 hours, sand milling refinement is dried, pulverizes, crosses 120 mesh sieves and obtains porcelain after 5 hours, finally porcelain is carried out to electrical property detection.
Detection method: porcelain is dry-pressing formed, and sinter porcelain at 1280 DEG C/1.5h～1320 DEG C/1.5h, electrical property is as follows after testing:
Dielectric constant 25 DEG C=10205～10265;
Dielectric loss tangent value tg δ 1=(114～119) × 10 -4, tg δ 2=(130～141) × 10 -4;
Curie temperature Tc=30 DEG C～35 DEG C, ε rTc=10267～10287;
Temperature factor: electric strength:
Embodiment 2: processing step is substantially the same manner as Example 1, difference is ceramic formula difference (wt%): BaTi 3: 73, CaTiO 3: 8, BaZrO 3: 10, BaSnO 3: 6, additive: 2.0, Bi 2o 33TiO2:0.5; ZnO:0.2, MnCO 3: 0.1, CuO:0.2.
By dry-pressing formed the porcelain preparing, and sinter porcelain at 1280 DEG C/1.5h～1320 DEG C/1.5h, electrical property is as follows after testing:
Dielectric constant 25 DEG C=10205～10265;
Dielectric loss tangent value tg δ 1=(114～119) × 10 -4, tg δ 2=(130～141) × 10 -4;
Curie temperature Tc=30 DEG C～35 DEG C, ε rTc=10267～10287;
Temperature factor: electric strength:
The porcelain electrical property that the present invention produces all can reach design objective, and the specific inductivity of porcelain is large, and electric strength is high, and outward appearance high conformity is single, closed assembly sintering character is consistent, and resistance to reduction is good.
Above-described embodiment is preferred embodiment of the present invention, is not used for limiting the scope of the present invention, thus the equivalent variations of being done with content described in the claims in the present invention, within all should being included in the claims in the present invention scope.

Claims (3)

1. a ceramic condenser porcelain, is characterized in that described porcelain is made up of the raw material of following wt%: BaTiO 373～82, CaTiO 34～12, BaZrO 37～15, BaSnO 33～8, additive 0.2～5, Bi 2o 33TiO 20.3～1.2, ZnO 0.1～0.2, CuO 0.1～0.3, MnCO 30.1～0.2;
Described additive is by SiO 2, Al 2o 3, Bi 2o 3, Nd 2o 3press 1:1:1:1 weight ratio formulated.
2. a manufacture method for ceramic condenser porcelain claimed in claim 1, is characterized in that:
Step 1: piece material is burnt in preparation; Adopt high-purity grade of BaCO of purity>=99.5% 3, technical grade or electronic-grade TiO 2, ZrO 2, SnO 2, Bi 2o 3, CaCO 3starting material, by mole calculating proportioning raw materials such as each compounds, adopt the synthetic BaTiO of solid phase synthesis process 3, CaTiO 3, BaSnO 3, BaZrO 3, Bi 2o 33TiO 2burn piece material for subsequent use;
Step 2: combination additive, by SiO 2, Al 2o 3, Bi 2o 3, Nd 2o 3add successively to stir in mill by described weight ratio and mix fine grinding 2-3 hour, draining is for subsequent use after dry, pulverize and sieving;
Step 3: by described wt% proportioning raw material, then the burning piece material, additive and other raw material that prepare are added to mixing and ball milling 3-4 hour in agitating ball mill successively, sand milling refinement dry, pulverize after 4-5 hour to sieve and obtains porcelain;
Step 4: porcelain is carried out to electrical property detection.
3. the manufacture method of ceramic condenser porcelain according to claim 2, is characterized in that: the material of described mixing and ball milling, sand milling refinement: ball: water=1:2:0.8～1.0.
CN201310283121.7A 2013-07-05 2013-07-05 Ceramic material of ceramic capacitor and manufacturing method thereof Expired - Fee Related CN103693955B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310283121.7A CN103693955B (en) 2013-07-05 2013-07-05 Ceramic material of ceramic capacitor and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310283121.7A CN103693955B (en) 2013-07-05 2013-07-05 Ceramic material of ceramic capacitor and manufacturing method thereof

Publications (2)

Publication Number Publication Date
CN103693955A CN103693955A (en) 2014-04-02
CN103693955B true CN103693955B (en) 2014-11-26

Family

ID=50355650

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310283121.7A Expired - Fee Related CN103693955B (en) 2013-07-05 2013-07-05 Ceramic material of ceramic capacitor and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN103693955B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104591703B (en) * 2014-12-26 2016-06-08 宜宾红星电子有限公司 A kind of bar ceramic condenser pole plate and preparation method thereof for dry instrument
TWI573775B (en) * 2015-07-16 2017-03-11 Ceramic capacitor dielectric material
CN105801111A (en) * 2016-04-20 2016-07-27 宝鸡雍鑫电子有限公司 High-dielectric-constant ceramic capacitor ceramic material and preparing method thereof
CN106554201A (en) * 2016-10-26 2017-04-05 安徽飞达电气科技有限公司 A kind of lead-free high-voltage ceramic capacitor material
CN106631003A (en) * 2016-11-14 2017-05-10 江苏大学 High-voltage ceramic capacitor dielectric

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053889A1 (en) * 1970-11-03 1972-07-20 Licentia Gmbh Ceramic dielectric - prepd from titanates and/or stannates of barium and bismuth
CN1133826A (en) * 1995-02-14 1996-10-23 Tdk株式会社 Dielectric ceramic composition
CN1545113A (en) * 2003-11-24 2004-11-10 广州杰赛科技股份有限公司 High-voltage ceramic capacitor medium for microwave oven magnetron
CN101607817A (en) * 2008-06-20 2009-12-23 赵华 A kind of electronic ceramic dielectric material
CN101648807A (en) * 2009-09-14 2010-02-17 桂林理工大学 Calcium barium zirconate titanate base piezoceramics and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520603B2 (en) * 1973-09-10 1980-06-04

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053889A1 (en) * 1970-11-03 1972-07-20 Licentia Gmbh Ceramic dielectric - prepd from titanates and/or stannates of barium and bismuth
CN1133826A (en) * 1995-02-14 1996-10-23 Tdk株式会社 Dielectric ceramic composition
CN1545113A (en) * 2003-11-24 2004-11-10 广州杰赛科技股份有限公司 High-voltage ceramic capacitor medium for microwave oven magnetron
CN101607817A (en) * 2008-06-20 2009-12-23 赵华 A kind of electronic ceramic dielectric material
CN101648807A (en) * 2009-09-14 2010-02-17 桂林理工大学 Calcium barium zirconate titanate base piezoceramics and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BaTiO3系陶瓷电压非线性特性研究;杨传仁 等;《硅酸盐学报》;19991231;第27卷(第6期);第671-676页 *
杨传仁 等.BaTiO3系陶瓷电压非线性特性研究.《硅酸盐学报》.1999,第27卷(第6期),第671-676页. *

Also Published As

Publication number Publication date
CN103693955A (en) 2014-04-02

Similar Documents

Publication Publication Date Title
CN103693955B (en) Ceramic material of ceramic capacitor and manufacturing method thereof
CN103214238B (en) Preparation method of barium strontium titanate dielectric temperature stable ceramic capacitor material
JPH05217426A (en) Non-reducing dielectric ceramic composition
CN101492293B (en) Barium titanate based Y5P ceramic dielectric material and method of producing the same
CN101593622B (en) MLCC copper inner electrode sizing material
CN102030526B (en) Anti-reduction ceramic dielectric material and preparation method thereof
CN102030528B (en) Dielectric ceramic material with high-temperature stability and preparation method thereof
CN103936410A (en) Manganese carbonate-doped high-temperature stable barium titanate-based dielectric material
CN102034604B (en) High-temperature-stability ceramic capacitor and preparation method thereof
CN101838141A (en) The manufacture method of barium titanate dielectric powder and manufacture method thereof, ceramic green sheet and the manufacture method of laminated ceramic capacitor
CN108129145B (en) X7R ceramic capacitor dielectric material and preparation method thereof
CN112408977A (en) High-quality ceramic dielectric material and preparation method thereof
CN108285342B (en) X8R ceramic capacitor dielectric material and preparation method thereof
CN105801111A (en) High-dielectric-constant ceramic capacitor ceramic material and preparing method thereof
CN112299845B (en) High-performance ceramic dielectric material and preparation method thereof
CN101333105A (en) X7RMLCC medium porcelain of thin medium
CN101302099A (en) Low temperature sintered low frequency MLCC porcelain
CN103708827B (en) A kind of SL group electronic ceramic dielectric material and preparation method
CN103193479B (en) Manufacturing method of low-cost surface layer type semiconductor ceramic capacitor porcelain
JPS6410467B2 (en)
JP5471093B2 (en) Method for producing dielectric ceramic composition
CN101723665B (en) High-temperature stability dielectric ceramics capable of being sintered at intermediate temperature and preparation method thereof
CN110105067A (en) A kind of high dielectric X7R ceramic medium material and preparation method thereof
CN103803969A (en) Y5U group of electronic ceramic dielectric materials and preparation method thereof
JP2014144893A (en) Dielectric porcelain and production method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141126

Termination date: 20200705

CF01 Termination of patent right due to non-payment of annual fee