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Patent Searching and Data


Title:
MANUFACTURE OF VOLTAGE-DEPENDENT NONLINEAR RESISTANCE ELEMENT
Document Type and Number:
Japanese Patent JPH01289212
Kind Code:
A
Abstract:

PURPOSE: To obtain a nonlinear resistance element having an excellent characteristic by a method wherein, after two pastes whose main components are individually Cu and Zn have been applied continuously to a sintered substance composed mainly of SrTiO3 and have been fired, ohmic electrodes are formed and, in addition, an electrode composed mainly of silver is piled up on it.

CONSTITUTION: An ohmic electrode 2 can be formed simply when a paste composed mainly of Cu is used as an electrode coming into ohmic contact with a sintered substance 1 composed mainly of SrTiO3 by properly selecting a particle diameter of Cu and the like. In order to suppress oxidation of Cu and to enhance strength of the electrode, an electrode 3 composed mainly of Zn is formed on it; in addition, in order to enhance corrosion resistance and reliability of the electrode and in order to be easily connected to an external electrode, an electrode layer 4 of silver is formed on it. By this setup, a cost is made low, productivity is enhanced, a bonding force between the sintered substance and the electrode becomes large, a defect that the electrode is hardly stripped off, a connection to the external electrode becomes easy, corrosion resistance is enhanced and a change with the passage of time can be made small.


Inventors:
NOI KEIICHI
Application Number:
JP11952688A
Publication Date:
November 21, 1989
Filing Date:
May 17, 1988
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H01C7/10; (IPC1-7): H01C7/10
Attorney, Agent or Firm:
Toshio Nakao (1 outside)