Influence of Microstructure on the Electrical Properties of Bi_2Sr_2Co_2O_y Compound
Source abstract
Abstract
Single phase Bi2Sr2Co2Oy compound was synthesized by Sol-Gel method,using PEG20000 and ultrasonic treatment to optimize microstructure of powders,and bulk materials were gained after SPS technique.The influence of microstructure on electrical properties of Bi2Sr2Co2Oy compound was investigated.The results show that adding of PEG20000 and ultrasonic treatment can decrease the size of powders obviously,the grain size of bulk materials decreases greatly,so the electrical properties of material increased.Bulk materials synthesized from the powders prepared with adding PEG20000 and ultrasonic treatment gain the highest ZT value of 0.041 at 873K.
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Research context
OpenAlex topics: Geomechanics and Mining Engineering · Geoscience and Mining Technology
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