VOLTAGE NONLINEAR RESISTOR AND MANUFACTURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a manufacturing method which can simply obtain a voltage nonlinear resistor, in which long service life and high durability are realized, without giving adverse effects on the environment. SOLUTION: In a method for manufacturing the voltage nonlinear resistor where z...

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Bibliographic Details
Main Authors KATOU TOMOAKI, KAWAHARA KAZUO, KAWAMATA IWAO, YAMASHITA HIDE, TAKADA YOSHIO, HORI AKIO
Format Patent
LanguageEnglish
Published 18.10.2002
Edition7
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRICITY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
RESISTORS
SLAG
TREATMENT OF NATURAL STONE
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Summary:PROBLEM TO BE SOLVED: To provide a manufacturing method which can simply obtain a voltage nonlinear resistor, in which long service life and high durability are realized, without giving adverse effects on the environment. SOLUTION: In a method for manufacturing the voltage nonlinear resistor where zinc oxide is main component, at least bismuth oxide and antimony oxide are contained as additive, mixed powder of bismuth oxide and antimony oxide is calcinated. Composition, composed of the mixed powder, zinc oxide and other additive, is heated and sintered at 700-1,000 deg.C and cooled down to room temperature. After that, this sintered member is subjected to heat treatment again in the range of 600 deg.C to 750 deg.C. As a result, at least 80% of the whole bismuth oxide contained in the sintered member is inverted to γ-Bi2 O3 of body-centered cubic lattice.
Bibliography:Application Number: JP20010108872