CN1306288A - Medium for high-voltage ceramic capacitor - Google Patents

Medium for high-voltage ceramic capacitor Download PDF

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Publication number
CN1306288A
CN1306288A CN 00112050 CN00112050A CN1306288A CN 1306288 A CN1306288 A CN 1306288A CN 00112050 CN00112050 CN 00112050 CN 00112050 A CN00112050 A CN 00112050A CN 1306288 A CN1306288 A CN 1306288A
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medium
voltage ceramic
ceramic condenser
cazro
srtio
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CN1120508C (en
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黄新友
高春华
肖尊文
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Jiangsu Science & Engineering Univ
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Jiangsu Science & Engineering Univ
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Abstract

A medium for high voltage ceramic condenser is composed of (by weight) BaTiO3 (65-98%), SrTiO3 (1-15%), Bi2O3.3TiO2(0.05-30%), CaZrO3 (0.03-6%), Nb2O5 (0.01-1%). The above preparing method can obtain the non-lead medium of high voltage ceramic condenser through the normal medium preparing process and the medium prepared by this way can stand high voltage up to 8 Kv/mm with small temperature changing.

Description

A kind of high-voltage ceramic condenser medium
The prescription that the invention relates to high-voltage ceramic condenser medium is formed, and it adopts conventional high-voltage ceramic condenser medium preparation method to prepare the lead-free high-voltage ceramic capacitor medium.
Fields such as colour TV, space flight, rocket, guided missile, navigation press for puncture voltage height, temperature stability is good, loss is little, volume is little, reliability is high ceramic capacitor.
Be generally used for producing in the medium of high voltage ceramic capacitor and contain a certain amount of lead, this not only works the mischief to human body in process of production, and stability is had harmful effect.
Chinese periodical " electronic component and material " the 8th volume discloses a kind of dielectric material of high voltage ceramic capacitor the 5th phase (in October, 1989) in " high Jie's high pressure 2B4 media ceramic " literary composition, this dielectric material adopts 97.8Wt%BaTiO 3+ 0.8Wt%Bi 2O 3+ 0.7Wt%Nb 2O 5+ 0.5Wt%CeO 2+ 0.2Wt%MnO 2Prescription, with the prepared sample of routine, its DIELECTRIC CONSTANT=2500～2600, tg δ=0.5～1.4%, DC break down voltage intensity is 7KV/mm.Though this medium belongs to unleaded dielectric material, it exists barotolerance relatively poor, and stability is also relatively poor.
Other has patent " manufacture method of high-voltage ceramic condenser medium " (patent No. 91101958.8), it adopts unconventional prepared medium, be the flow casting molding film, laminated medium body then, with the multilayer dielectricity body carry out the even pressure of heating in vacuum, punching, then carry out binder removal, burn till and get.The shortcoming of this patent is preparation technology's method complexity, cause cost of goods manufactured to increase, and the capacitance temperature factor of high voltage ceramic capacitor of making gained by its medium prescription is big, causes in the use performance inconsistency big, and the capacitor safety in utilization is poor.
The purpose of this invention is to provide a kind of high-voltage ceramic condenser medium.
The object of the present invention is achieved like this:
Higfh-tension ceramics medium prescription is formed and is comprised (weight ratio): BaTiO 365～98%, SrTiO 31～15%, Bi 2O 33TiO 20.05～30%, CaZrO 30.03～6%, Nb 2O 50.01～1%.
The present invention also adds (weight ratio): K in mentioned component 2CO 30.01～4%, MgO 0.02～2%, SiO 20.01～3%.
It adopts conventional high-voltage ceramic condenser medium preparation technology, promptly by prescription the raw material ball mill grinding is mixed, after drying, add the adhesive granulation, be pressed into green sheet again, then sintering in air, after insulation, obtain ceramic capacitor dielectric, on medium by top electrode.
The prescription of above-mentioned ceramic dielectric preferably adopts following three kinds of schemes (weight ratio):
①BaTiO 3?90～95％,SrTiO 3?1～8％,Bi 2O 3·3TiO 2?0.05～5％,CaZrO 3?1～6％,Nb 2O 5?0.1～0.5％,K 2CO 3?0.01～0.5％,MgO?0.1～0.5％,SiO 2?0.01～2％。
②BaTiO 3?80～90％,SrTiO 3?2～7％,Bi 2O 3·3TiO 2?1～7％,CaZrO 3?1～6％,Nb 2O 50.2～0.5％,K 2CO 3?0.2～0.5％,MgO?0.2～0.5％,SiO 2?0.01～1.5％。
③BaTiO 3?75～80％,SrTiO 3?3～6％,Bi 2O 3·3TiO 2?15～20％,CaZrO 3?1～6％,Nb 2O 50.01～0.5％,K 2CO 3?0.01～0.5％,MgO?0.1～0.5％,SiO 2?0.01～2％。
The invention will be further described in conjunction with the embodiments now.
Table 1,2,3 provides three groups of embodiment of the present invention prescription of totally 9 samples.First group of embodiment (sample 1,2,3) has the temperature characterisitic of B group; Second group of embodiment (sample 4,5,6) has the temperature characterisitic of B group; The 3rd group of embodiment (sample 7,8,9) has the temperature characterisitic of D group, approaches the B group.
Table 1
Specimen coding Composition (weight %)
BaTiO 3 ?SrTiO 3 ?CaZrO 3 ?Bi 2O 3·3TiO 2 ?Nb 2O 5 ?K 2CO 3 ?MgO ?SiO 2
????1 ????90 ????6 ????1 ????2.1 ????0.4 ????0.1 ????0.1 ????0.3
????2 ????93 ????3 ????1.5 ????1.2 ????0.5 ????0.2 ????0.2 ????0.4
????3 ????91 ????2.5 ????2 ????3.65 ????0.5 ????0.05 ????0.1 ????0.2
Table 2
Specimen coding Composition (weight %)
BaTiO 3 ?SrTiO 3 ?CaZrO 3 ?Bi 2O 3·3TiO 2 ?Nb 2O 5 K 2CO 3 ?MgO ?SiO 2
?4 ????85 ?6.6 ?1 ????5.95 ????0.4 ????0.2 ????0.25 ????0.6
?5 ????88 ?5 ?2.9 ????2.5 ????0.45 ????0.2 ????0.4 ????0.55
?6 ????90 ?4 ?1.5 ????3 ????0.5 ????0.25 ????0.35 ????0.4
Table 3
Specimen coding Composition (weight %)
BaTiO 3 SrTiO 3 CaZrO 3 ?Bi 2O 3·3TiO 2 ?Nb 2O 5 K 2CO 3 ?MgO ?SiO 2
7 ?78.9 ?3.65 ????1 ????15 ?0.35 ?0.3 ?0.3 ?0.5
8 ?77 ?4.6 ????2 ????15 ?0.45 ?0.4 ?0.2 ?0.35
9 ?75 ?3 ????3.25 ????17.6 ?0.4 ?0.25 ?0.1 ?0.4
The primary raw material of above-mentioned prescription adopts capacitor stage pure, at first adopt vibration to mix with distilled water or deionized water raw material by above-mentioned prescription during preparation, material: ball: water (weight ratio)=(1～1.2): 3: (0.6～1.2), after the vibration 5～8 hours, dry dry mash, in dry mash, add the weight concentration account for its weight 10% and be 10% poly-vinyl alcohol solution, carry out granulation, 40 mesh sieves are crossed in the mixed back of grinding, under 10～20Mpa pressure, carry out dry-pressing again and become green sheet, insulation was carried out binder removal in 0.5～3.5 hour and is burnt till under temperature is 1260 ℃～1400 ℃ then, was incubated 15 minutes down at 780 ℃～870 ℃ again and carried out silver ink firing, formation silver electrode, solder taul again, seal, promptly get capacitor, can test its dielectric property.
The dielectric property of above-mentioned each sample are shown in the table 4.
Table 4
Specimen coding DIELECTRIC CONSTANT Dielectric loss (* 10 -4) Insulation resistance (* 10 10Ω·cm) Percentage of capacitance variation with temperature % (25 ℃～+ 85 ℃) Anti-direct voltage (KV/mm)
????1 ????3300 ????120 ????≥50 ????+3.5 ????-1 ????＞9
????2 ????3100 ????126 ????≥50 ????+3.5 ????-1 ????＞9
????3 ????2900 ????116 ????≥50 ????+3.5 ????-1 ????＞9
????4 ????1500 ????100 ????≥20 ????+3 ????-2 ????＞8
????5 ????1700 ????87 ????≥20 ????+3 ????-2 ????＞8
????6 ????1850 ????108 ????≥20 ????+3 ????-2 ????＞8
????7 ????2200 ????55 ????≥50 ????+10 ????-11 ????≥10
????8 ????2010 ????50 ????≥50 ????+10 ????-11 ????≥10
????9 ????1860 ????45 ????≥50 ????+10 ????-11 ????≥10
The present invention compared with prior art has the following advantages: 1, withstand voltage height can reach more than the 8KV/mm the highest withstand voltage reaching more than the 10KV/mm. 2, percentage of capacitance variation with temperature is little, DIELECTRIC CONSTANTS=3300 o'clock, and percentage of capacitance variation with temperature Δ C/C (25～+ 85 ℃) reachesUse procedure performance good stability, safe. 3, cost is low, and primary raw material adopts that capacitor stage is pure can to produce ceramic dielectric of the present invention. 4, technique is simple, adopts conventional high-voltage ceramic condenser medium preparation technology to be prepared. 5, high-voltage ceramic condenser medium component provided by the invention is not leaded, on the pollution-free impact of production environment.

Claims (5)

1, a kind of high-voltage ceramic condenser medium is characterized in that described medium prescription comprises (weight ratio): BaTiO 365～98%, SrTiO 31～15%, Bi 2O 33 TiO 20.05 CaZrO～30%, 30.03 Nb～6%, 2O 50.01～1%.
2, high-voltage ceramic condenser medium according to claim 1 is characterized in that described medium prescription contains (weight ratio): K 2CO 30.01～4%, MgO 0.02～2%, SiO 20.01～3%.
3,, it is characterized in that described medium prescription (weight ratio) is: BaTiO according to claim 1,2 described high-voltage ceramic condenser mediums 390～95%, SrTiO 31～8%, Bi 2O 33 TiO 20.05 CaZrO～5%, 31～6%, Nb 2O 50.1 K～0.5%, 2CO 30.01～0.5%, MgO 0.1～0.5%, SiO 20.01～2%.
4,, it is characterized in that described medium prescription (weight ratio) is: BaTiO according to claim 1,2 described high-voltage ceramic condenser mediums 380～90%, SrTiO 32～7%, Bi 2O 33TiO 21～7%, CaZrO 31～6%, Nb 2O 50.2 K～0.5%, 2CO 30.2～0.5%, MgO 0.2～0.5%, SiO 20.01～1.5%.
5,, it is characterized in that described medium prescription (weight ratio) is: BaTiO according to claim 1,2 described high-voltage ceramic condenser mediums 375～80%, SrTiO 33～6%, Bi 2O 33TiO 215～20%, CaZrO 31～6%, Nb 2O 50.01 K～0.5%, 2CO 30.01～0.5%, MgO 0.1～0.5%, SiO 20.01～2%.
CN 00112050 2000-01-20 2000-01-20 Medium for high-voltage ceramic capacitor Expired - Fee Related CN1120508C (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100359612C (en) * 2004-09-03 2008-01-02 江苏大学 Medium low temperature sintered high voltage ceramic capacitor medium
CN102030528A (en) * 2009-09-29 2011-04-27 无锡隆傲电子有限公司 Dielectric ceramic material with high-temperature stability and preparation method thereof
CN1889211B (en) * 2006-07-17 2011-06-15 钱云春 Barium titanate Y5U capacity material formula
CN103224388A (en) * 2012-01-27 2013-07-31 Tdk株式会社 Dielectric ceramic composition and electronic component
CN104058750A (en) * 2013-03-19 2014-09-24 河北联合大学 Preparation process of high-energy storage density BST-based ferroelectric ceramics
CN105294101A (en) * 2014-06-03 2016-02-03 上海帛汉新材料科技有限公司 Dielectric material for high temperature stable type ceramic capacitor, and preparation method therefor and application thereof
CN107039177A (en) * 2016-02-04 2017-08-11 禾伸堂企业股份有限公司 The dielectric ceramic body of resistance to instant high-voltage
CN108249915A (en) * 2016-12-28 2018-07-06 Tdk株式会社 Dielectric composition and electronic unit
CN108962594A (en) * 2018-06-28 2018-12-07 史宝林 A kind of micromation high reliability patch-type safety ceramic capacitor and its processing method
CN109704763A (en) * 2018-12-28 2019-05-03 有研工程技术研究院有限公司 A kind of preparation method of low-temperature sintering ceramic dielectric material
CN114758890A (en) * 2022-05-31 2022-07-15 汕头市瑞升电子有限公司 Ultrahigh-voltage ceramic capacitor medium and preparation method thereof

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100359612C (en) * 2004-09-03 2008-01-02 江苏大学 Medium low temperature sintered high voltage ceramic capacitor medium
CN1889211B (en) * 2006-07-17 2011-06-15 钱云春 Barium titanate Y5U capacity material formula
CN102030528A (en) * 2009-09-29 2011-04-27 无锡隆傲电子有限公司 Dielectric ceramic material with high-temperature stability and preparation method thereof
CN103224388A (en) * 2012-01-27 2013-07-31 Tdk株式会社 Dielectric ceramic composition and electronic component
CN103224388B (en) * 2012-01-27 2014-12-10 Tdk株式会社 Dielectric ceramic composition and electronic component
CN104058750A (en) * 2013-03-19 2014-09-24 河北联合大学 Preparation process of high-energy storage density BST-based ferroelectric ceramics
CN105294101A (en) * 2014-06-03 2016-02-03 上海帛汉新材料科技有限公司 Dielectric material for high temperature stable type ceramic capacitor, and preparation method therefor and application thereof
CN107039177B (en) * 2016-02-04 2020-05-05 禾伸堂企业股份有限公司 Instantaneous high voltage resistant dielectric ceramic body
CN107039177A (en) * 2016-02-04 2017-08-11 禾伸堂企业股份有限公司 The dielectric ceramic body of resistance to instant high-voltage
CN108249915A (en) * 2016-12-28 2018-07-06 Tdk株式会社 Dielectric composition and electronic unit
CN108249915B (en) * 2016-12-28 2021-04-16 Tdk株式会社 Dielectric composition and electronic component
CN108962594A (en) * 2018-06-28 2018-12-07 史宝林 A kind of micromation high reliability patch-type safety ceramic capacitor and its processing method
CN109704763A (en) * 2018-12-28 2019-05-03 有研工程技术研究院有限公司 A kind of preparation method of low-temperature sintering ceramic dielectric material
CN109704763B (en) * 2018-12-28 2021-06-15 有研工程技术研究院有限公司 Preparation method of low-temperature sintered ceramic dielectric material
CN114758890A (en) * 2022-05-31 2022-07-15 汕头市瑞升电子有限公司 Ultrahigh-voltage ceramic capacitor medium and preparation method thereof
CN114758890B (en) * 2022-05-31 2024-03-22 汕头市瑞升电子有限公司 Ultrahigh-voltage ceramic capacitor medium and preparation method thereof

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