Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
A semiconductor ceramic of the present invention includes a Ba m TiO 3 -based composition, as a main component, having a perovskite structure represented by general formula A m BO 3 . The molar ratio m between an A site and a B site satisfies 1.001 ¤ m ¤ 1.01. Part of Ba constituting the A site is replaced with Bi, Ca, a rare-earth element, and at least one of Li and Na. The content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 to 0.175) on a molar ratio basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, there is provided a lead-free semiconductor ceramic that substantially does not contain lead and that has desired PTC characteristics and high reliability,
SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
A semiconductor ceramic of the present invention includes a Ba m TiO 3 -based composition, as a main component, having a perovskite structure represented by general formula A m BO 3 . The molar ratio m between an A site and a B site satisfies 1.001 ¤ m ¤ 1.01. Part of Ba constituting the A site is replaced with Bi, Ca, a rare-earth element, and at least one of Li and Na. The content of the Ca when the total number of moles of the elements constituting the A site is 1 mole is 0.05 to 0.20 (preferably 0.125 to 0.175) on a molar ratio basis. A PTC thermistor includes a component body 1 formed of the semiconductor ceramic. Accordingly, there is provided a lead-free semiconductor ceramic that substantially does not contain lead and that has desired PTC characteristics and high reliability,
SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
HALBLEITERKERAMIK UND THERMISTOR MIT POSITIVEM TEMPERATURKOEFFIZIENTEN
CÉRAMIQUE DE SEMI-CONDUCTEUR ET THERMISTANCE À COEFFICIENT DE TEMPÉRATURE POSITIF
KISHIMOTO ATSUSHI (Autor:in) / KATSU HAYATO (Autor:in) / GOTO MASATO (Autor:in) / ABE NAOAKI (Autor:in) / NAKAYAMA AKINORI (Autor:in)
25.07.2018
Patent
Elektronische Ressource
Englisch
SEMICONDUCTOR CERAMIC AND POSITIVE TEMPERATURE COEFFICIENT THERMISTOR
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