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High-potential gradient zinc oxide voltage piezo-resistor material and preparation method thereof
The invention discloses a high-potential gradient zinc oxide piezo-resistor material and a preparation method thereof. The piezo-resistor material is prepared from industrial superior ZnO powder having the purity being greater than or equal to 99.97%, analytically pure raw materials Bi2O3, Co2O3, Sb2O3, MnCO3, Ni2O3, Y2O3 and Nb2O5 having the purity being greater than or equal to 99%, and independently prepared lead-free superfine silver glass powder. A 300V/mm-500V/mm high-potential gradient zinc oxide piezo-resistor can be prepared by virtue of the steps of accurately weighing the raw materials, evenly mixing the raw materials, pre-sintering after drying, crushing, granulating, molding by dry-pressing, degumming, performing microwave sintering, and then performing surface electric polarization, welding and encapsulating. According to the preparation method, the independently prepared lead-free superfine silver glass powder is added, and the microwave sintering technology and the pre-sintering technology are adopted to effectively overcome the intrinsic defects of the product due to abnormal crystal grain growth, and finally, the prepared high potential gradient zinc oxide voltage dependent resistor is excellent in electrical properties.
High-potential gradient zinc oxide voltage piezo-resistor material and preparation method thereof
The invention discloses a high-potential gradient zinc oxide piezo-resistor material and a preparation method thereof. The piezo-resistor material is prepared from industrial superior ZnO powder having the purity being greater than or equal to 99.97%, analytically pure raw materials Bi2O3, Co2O3, Sb2O3, MnCO3, Ni2O3, Y2O3 and Nb2O5 having the purity being greater than or equal to 99%, and independently prepared lead-free superfine silver glass powder. A 300V/mm-500V/mm high-potential gradient zinc oxide piezo-resistor can be prepared by virtue of the steps of accurately weighing the raw materials, evenly mixing the raw materials, pre-sintering after drying, crushing, granulating, molding by dry-pressing, degumming, performing microwave sintering, and then performing surface electric polarization, welding and encapsulating. According to the preparation method, the independently prepared lead-free superfine silver glass powder is added, and the microwave sintering technology and the pre-sintering technology are adopted to effectively overcome the intrinsic defects of the product due to abnormal crystal grain growth, and finally, the prepared high potential gradient zinc oxide voltage dependent resistor is excellent in electrical properties.
High-potential gradient zinc oxide voltage piezo-resistor material and preparation method thereof
LIANG ZIWEI (Autor:in) / LIU DAN (Autor:in) / MA XINHUA (Autor:in) / SHEN XIAOKANG (Autor:in) / CHU DONGJIN (Autor:in) / ZHONG XUAN (Autor:in)
06.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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