Title:
【発明の名称】積層セラミックコンデンサ
Document Type and Number:
Japanese Patent JP2899303
Kind Code:
B2
Abstract:
PURPOSE:To heighten the dielectric constant, insulation resistance and insulation breakdown voltage of a dielectric porcelain composition so as to enhance its quality Q by making the composition contain a specific amount of vanadium oxide as its auxiliary component against its main component i.e., BaO-TiO2-Re2 O3 that the composition contains in such a manner that when an expression is given as xBaO-yTiO2-zRe2O3 (x), (y) and (z) are in a specific mol ratio range. CONSTITUTION:The dielectric porcelain composition is made to contain vanadium oxide aa its auxiliary component by 0.005 to 2.000 parts by weight in V2O5 against 100 parts by weight of its main component i.e. BaO-TiO-ReO that the composition contains in such a manner that when an expression is given as xBaO yTiO zRe O (x+y+z=1.00; Re2O3 is at least more than one kind of rare earth element selected from La2O3, Pr2O11/3, Nd2O3 and Sm2O3), (x), (y) and (z) are in a mol ratio range surrounded by points (a) to (f) in the figure. It is thus made possible to obtain a dielectric porcelain composition of high dielectric constant, high insulation resistance and high insulation breakdown voltage, being excellent in quality Q, and of a small temperature coefficient of electrostatic capacity.
Inventors:
KURAMITSU HIDENORI
Application Number:
JP6240889A
Publication Date:
June 02, 1999
Filing Date:
March 15, 1989
Export Citation:
Assignee:
MATSUSHITA DENKI SANGYO KK
International Classes:
C04B35/46; H01B3/12; H01G4/12; (IPC1-7): H01B3/12; C04B35/46; H01G4/12
Domestic Patent References:
| JP6283364A | ||||
| JP4959299A | ||||
| JP6256361A | ||||
| JP63298910A | ||||
| JP63292509A | ||||
| JP6217069A | ||||
| JP59154703A | ||||
| JP63246810A |
Other References:
【文献】「工業材料」1985年4月号第33巻第4号 P.39~48
【文献】「ニューケラス3 積層セラミックコンデンサ」ニューケラス編集委員会編 1988年9月26日 (株)学献社発行 P.19~25
【文献】「ニューケラス3 積層セラミックコンデンサ」ニューケラス編集委員会編 1988年9月26日 (株)学献社発行 P.19~25
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)