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High curie-point positive temperature coefficient resistance material Li4BaWTiO8 and preparation method thereof
The invention discloses a lead-free high curie-point positive temperature coefficient resistance material and a preparation method thereof. The chemical composition type of the lead-free high curie-point positive temperature coefficient resistance material is Li4BaWTiO8, and original powder of Li2CO3, VaCO3, TiO2 and WO3 which are above 99.9% (percentage by weight) in purity are weighed and burdened according to the Li4BaWTiO8, thereby preparing lead-free positive temperature coefficient resistance materials which are 550 DEG C in curie point through processes such as ball milling, calcining, secondary ball milling, granulating, forming, rubber discharging, high temperature sintering and top silver (Ag) electrodes and the like. The lead-free high curie-point positive temperature coefficient resistance material which is prepared through the method does not contain lead, thereby preventing lead from damaging fitness of human bodies and polluting environment. The lead-free high curie-point positive temperature coefficient resistance material and the preparation method thereof are low in sintering temperature and low in cost of raw materials, achieve practical level, and are suitable for industrialized mass production.
High curie-point positive temperature coefficient resistance material Li4BaWTiO8 and preparation method thereof
The invention discloses a lead-free high curie-point positive temperature coefficient resistance material and a preparation method thereof. The chemical composition type of the lead-free high curie-point positive temperature coefficient resistance material is Li4BaWTiO8, and original powder of Li2CO3, VaCO3, TiO2 and WO3 which are above 99.9% (percentage by weight) in purity are weighed and burdened according to the Li4BaWTiO8, thereby preparing lead-free positive temperature coefficient resistance materials which are 550 DEG C in curie point through processes such as ball milling, calcining, secondary ball milling, granulating, forming, rubber discharging, high temperature sintering and top silver (Ag) electrodes and the like. The lead-free high curie-point positive temperature coefficient resistance material which is prepared through the method does not contain lead, thereby preventing lead from damaging fitness of human bodies and polluting environment. The lead-free high curie-point positive temperature coefficient resistance material and the preparation method thereof are low in sintering temperature and low in cost of raw materials, achieve practical level, and are suitable for industrialized mass production.
High curie-point positive temperature coefficient resistance material Li4BaWTiO8 and preparation method thereof
CHEN JINWU (author) / FANG LIANG (author) / WANG DAN (author)
2015-12-30
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