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High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
The invention discloses a high-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and a preparation method thereof. The chemical composition formula of the high-curie-point positive-temperature-coefficient resistance material is Ba3Li3Bi2Nb5O20. Original powder of BaCO3, Li2CO3, Bi2O3 and Nb2O5 with the purity (weight percentage) of more than 99.9% is weighed and mixed according to the composition formula of Ba3Li3Bi2Nb5O20, and the lead-free positive-temperature-coefficient resistance material with the curie point reaching up to 380 DEG C is prepared through ball milling, calcinating, secondary ball milling, pelleting, forming, glue discharging, high-temperature sintering, Ag electrode feeding and other procedures. The prepared resistance material is free of lead, so that the harm of lead to health of the human body and the pollution of lead to the environment are avoided. The high-curie-point positive-temperature-coefficient resistance material is low in sintering temperature, low in cost of raw materials and suitable for industrial mass production, and reaches the practical level.
High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
The invention discloses a high-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and a preparation method thereof. The chemical composition formula of the high-curie-point positive-temperature-coefficient resistance material is Ba3Li3Bi2Nb5O20. Original powder of BaCO3, Li2CO3, Bi2O3 and Nb2O5 with the purity (weight percentage) of more than 99.9% is weighed and mixed according to the composition formula of Ba3Li3Bi2Nb5O20, and the lead-free positive-temperature-coefficient resistance material with the curie point reaching up to 380 DEG C is prepared through ball milling, calcinating, secondary ball milling, pelleting, forming, glue discharging, high-temperature sintering, Ag electrode feeding and other procedures. The prepared resistance material is free of lead, so that the harm of lead to health of the human body and the pollution of lead to the environment are avoided. The high-curie-point positive-temperature-coefficient resistance material is low in sintering temperature, low in cost of raw materials and suitable for industrial mass production, and reaches the practical level.
High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
FANG LIANG (author) / CHEN JINWU (author) / WANG DAN (author)
2015-11-11
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2015
| European Patent Office | 2016
| European Patent Office | 2015
| European Patent Office | 2015
| European Patent Office | 2015