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JPS54134399A - High dielectric constant system ceramic composite - Google Patents

High dielectric constant system ceramic composite

Info

Publication number
JPS54134399A
JPS54134399A JP4197478A JP4197478A JPS54134399A JP S54134399 A JPS54134399 A JP S54134399A JP 4197478 A JP4197478 A JP 4197478A JP 4197478 A JP4197478 A JP 4197478A JP S54134399 A JPS54134399 A JP S54134399A
Authority
JP
Japan
Prior art keywords
weight percentage
dielectric constant
pbo
mgo
dielectrics
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.)
Pending
Application number
JP4197478A
Other languages
Japanese (ja)
Inventor
Kiyoshi Furukawa
Shinobu Fujiwara
Nobuaki Kikuchi
Osamu Iizawa
Hitoshi Tanaka
Hisayoshi Kamioka
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP4197478A priority Critical patent/JPS54134399A/en
Priority to GB7912187A priority patent/GB2018237B/en
Priority to US06/027,833 priority patent/US4216102A/en
Priority to DE19792914130 priority patent/DE2914130A1/en
Publication of JPS54134399A publication Critical patent/JPS54134399A/en
Pending legal-status Critical Current

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  • Compositions Of Oxide Ceramics (AREA)
  • Ceramic Capacitors (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

PURPOSE: To obtain ceramic dielectrics which can be produced by way of low temperature sintering and which are excellent in dielectric constant, dielectrics loss, and capacity variation by using the solid phase reaction of PbO, Fe2O3, MgO, and Nb2O5 at a specific proportion.
CONSTITUTION: The composition of Pb (Mg1/3.Nb2/3)O3.Pb(Fe1/2.Nb1/2)O3 system high dielectric constant ceramic composite consists of PbO of 67.99 to 68.58 in weight percentage, Fe2O3 of 0.61 to 8.51 in weight percentage, MgO of 1.23 to 3.92 in weight percentage, and Nb2O5 of 22.27 to 26.89 in weight percentage. For example, after PbO, MgO, Fe2O3, and Nb2O5 are weighted for the specified amount and mixed in the dry method, they are calcined for two hours at a temperature of 700 to 850°C and chemically reacted. Then, after this reactive substance is broken to pieces and mixed and after polyvinylic alcohol is added to this mixture as caking agent and molded at a pressure of 3 t/cm2, this molding substance is sealed in magnesia ceramic container and actually calcined for two hours at a temperature of 850 to 950°C. As a result, ceramic dielectrics are obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP4197478A 1978-04-10 1978-04-10 High dielectric constant system ceramic composite Pending JPS54134399A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4197478A JPS54134399A (en) 1978-04-10 1978-04-10 High dielectric constant system ceramic composite
GB7912187A GB2018237B (en) 1978-04-10 1979-04-06 Ceramic composition
US06/027,833 US4216102A (en) 1978-04-10 1979-04-06 High dielectric constant type ceramic composition consisting essentially of Pb(Fe1/2 Nb1/2)O3 -Pb(Mg1/3 Nb2/3)O3
DE19792914130 DE2914130A1 (en) 1978-04-10 1979-04-07 CERAMIC DIELECTRIC WITH HIGH DIELECTRICITY CONSTANT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4197478A JPS54134399A (en) 1978-04-10 1978-04-10 High dielectric constant system ceramic composite

Publications (1)

Publication Number Publication Date
JPS54134399A true JPS54134399A (en) 1979-10-18

Family

ID=12623158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4197478A Pending JPS54134399A (en) 1978-04-10 1978-04-10 High dielectric constant system ceramic composite

Country Status (1)

Country Link
JP (1) JPS54134399A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625258A (en) * 1984-03-03 1986-11-25 Standard Telephones And Cables, Public Limited Co. Ceramic capacitors and dielectric compositions
US5180699A (en) * 1989-11-13 1993-01-19 Sakai Chemical Industry Co., Ltd. Process for producing powder material for lead perovskite ceramic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625258A (en) * 1984-03-03 1986-11-25 Standard Telephones And Cables, Public Limited Co. Ceramic capacitors and dielectric compositions
US5180699A (en) * 1989-11-13 1993-01-19 Sakai Chemical Industry Co., Ltd. Process for producing powder material for lead perovskite ceramic

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