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POSITIVE TEMPERATURE COEFFICIENT CERAMIC THERMISTOR ELEMENT HAVING STRONG REDUCING ATMOSPHERE RESISTANCE AND PREPARATION METHOD THEREFOR
A positive temperature coefficient ceramic thermistor element having strong reducing atmosphere resistance and a preparation method therefor, the thermistor element comprising a sintered thermosensitive ceramic piece that uses lead barium titanate as a base, as well as metal ohmic electrodes which are positioned on two side surfaces of the thermosensitive ceramic piece. The thermistor element has the following features: the thermistor element further comprises a microporous channel barrier layer, and the microporous channel barrier layer comprises a glass sealing layer or an organic matter sealant; when the microporous channel barrier layer is the glass sealing layer, the glass sealing layer integrally wraps the outer surface of the thermosensitive ceramic piece, and the metal ohmic electrodes are combined on two side surfaces of the glass sealing layer; and when the microporous channel barrier layer is the organic matter sealant, the organic matter sealant fills and blocks micro-pores in the surfaces of the metal ohmic electrodes combined on the two side surfaces of the thermosensitive ceramic piece and, at the same time, blocks gaps in the surfaces of areas, that do not have the metal ohmic electrodes, of a peripheral edge of the thermosensitive ceramic piece. Thus, resistance to harsh environments is improved, service life is prolonged, and the reliability and expected service requirements of related heating groups are improved.
POSITIVE TEMPERATURE COEFFICIENT CERAMIC THERMISTOR ELEMENT HAVING STRONG REDUCING ATMOSPHERE RESISTANCE AND PREPARATION METHOD THEREFOR
A positive temperature coefficient ceramic thermistor element having strong reducing atmosphere resistance and a preparation method therefor, the thermistor element comprising a sintered thermosensitive ceramic piece that uses lead barium titanate as a base, as well as metal ohmic electrodes which are positioned on two side surfaces of the thermosensitive ceramic piece. The thermistor element has the following features: the thermistor element further comprises a microporous channel barrier layer, and the microporous channel barrier layer comprises a glass sealing layer or an organic matter sealant; when the microporous channel barrier layer is the glass sealing layer, the glass sealing layer integrally wraps the outer surface of the thermosensitive ceramic piece, and the metal ohmic electrodes are combined on two side surfaces of the glass sealing layer; and when the microporous channel barrier layer is the organic matter sealant, the organic matter sealant fills and blocks micro-pores in the surfaces of the metal ohmic electrodes combined on the two side surfaces of the thermosensitive ceramic piece and, at the same time, blocks gaps in the surfaces of areas, that do not have the metal ohmic electrodes, of a peripheral edge of the thermosensitive ceramic piece. Thus, resistance to harsh environments is improved, service life is prolonged, and the reliability and expected service requirements of related heating groups are improved.
POSITIVE TEMPERATURE COEFFICIENT CERAMIC THERMISTOR ELEMENT HAVING STRONG REDUCING ATMOSPHERE RESISTANCE AND PREPARATION METHOD THEREFOR
KERAMISCHES THERMISTORELEMENT MIT POSITIVEM TEMPERATURKOEFFIZIENTEN MIT STARKEM WIDERSTAND GEGEN REDUZIERENDE ATMOSPHÄRE UND HERSTELLUNGSVERFAHREN DAFÜR
ÉLÉMENT DE THERMISTANCE EN CÉRAMIQUE À COEFFICIENT DE TEMPÉRATURE POSITIF AYANT UNE FORTE RÉSISTANCE À L'ATMOSPHÈRE RÉDUCTRICE ET SON PROCÉDÉ DE PRÉPARATION
FU QIUYUN (author) / HE ZHENGAN (author) / ZHOU DONGXIANG (author)
2023-12-27
Patent
Electronic Resource
English
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