BARIUM TITANATE-BASED SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR

BARIUM TITANATE-BASED SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR

Provided is a barium titanate-based semiconductor ceramic composition which contains no Pb, which can have an increased Curie temperature, which exhibits slight deterioration with time, and which has high reliability. The barium titanate-based semiconductor ceramic composition is represented by the...

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1. Verfasser: KATSU, Hayato
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Sprache:eng ; fre ; ger
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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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description Provided is a barium titanate-based semiconductor ceramic composition which contains no Pb, which can have an increased Curie temperature, which exhibits slight deterioration with time, and which has high reliability. The barium titanate-based semiconductor ceramic composition is represented by the composition formula (Ba 1-x-y-z Sr y (A1Bi) x A2 z )TiO 3 , where A1 is an alkali metal element, A2 is a rare-earth element, and x, y, and z satisfy the following inequalities 0.03 ‰¤ x ‰¤ 0,20, 0.02 ‰¤ y ‰¤ 0.20, 0.0005 ‰¤ z ‰¤ 0.015, and x - 0.10 ‰¤ y ‰¤ (5 / 4)·x. In addition, 0.01 to 0.20 molar parts of Mn per 100 molar parts of Ti is preferably added thereto.
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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
title BARIUM TITANATE-BASED SEMICONDUCTOR CERAMIC COMPOSITION AND PTC THERMISTOR
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