Title:
SEMICONDUCTIVE ZIRCONIA SINTERED COMPACT
Document Type and Number:
Japanese Patent JP3261065
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To inexpensively obtain a sintered compact capable of dissipating static electricity at a moderate rate without considerably deteriorating the mechanical properties inherent in zirconia and having a specific volume resistivity, by adding each specific amount of the respective oxides of Fe, Co, Ni and/or Cr as electroconductivity-imparting agent to stabilizer-contg. ZrO2 followed by conducting a sintering which is allowed in an oxidative atmosphere.
SOLUTION: This sintered compact is obtained by sintering a mixture of 60-90 wt.% of stabilizer-contg. ZrO2 and 10-40 wt.% of an electroconductivity- imparting agent. The volume resistivity of this sintered compact is 105-109 Ω.cm. The major material ZrO2 to be used has been partially stabilized with such a stabilizer as Y2O3, MgO, CaO or CeO2. The amounts of these stabilizers to be used, based on the ZrO2, are as follows: Y2O3: 3-9 mol.%, MgO: 16-26 mol.%, CaO: 8-12 mol.%, and CeO2: 1-16 mol.%.
Inventors:
Shunji Mikaki
Masahiro Nakahara
Masahiro Nakahara
Application Number:
JP10985597A
Publication Date:
February 25, 2002
Filing Date:
April 25, 1997
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
C04B35/48; G11B15/00; G11B15/60; H01B1/14; (IPC1-7): C04B35/48; H01B1/14
Domestic Patent References:
| JP867560A | ||||
| JP59232966A | ||||
| JP1122963A |
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