西华大学学报（自然科学版）2012，Vol.31Issue(6)：16-19,4.
CaMnO3热电材料的低温烧结研究
Study on the Low-temperature Sintering of Thermoelectric Material CaMnO3
摘要
Abstract
It is Proposed to fabricate a thermoelectric generator with P - N structure by sintering the N - type CaMnO3 together with the P - type Ca3 Co4 O9 directly. It is necessary to sinter CaMnO3 ceramic below the phase transition temperature of Ca3 Co4 O9 , 926 癈. In this paper, CaMnO3 powder wsa synthesized using the solid reaction method, then mixed with Bi2O3 and pressed into pellet. Sintering was carried out in air at 900cC for 12h. The microstructure and thermoelectric properties of prepared sample were also investigated. As a result, there was no detectable secondary phase caused by additional Bi2O3; the average electrical conductivity increased and the approximate Seebeck coefficient decreased with increasing adding of Bi2 O3; the average electrical conductivity and the approximate Seebeck coefficient increased with increasing temperature. The addition of Bi2O3 promoted the sintering process and decreased the sintering temperature, and effectively improved the thermoelectric properties of CaMnO3 sample as well.关键词
CaMnO3/Bi2O3/热电陶瓷/低温烧结Key words
CaMnO3 / Bi2O3/ thermoelectric ceramic/ low-temperature sintering分类
通用工业技术引用本文复制引用
王琴,盛得雪,鲁云,宋少伟,陈建文,金应荣..CaMnO3热电材料的低温烧结研究[J].西华大学学报（自然科学版）,2012,31(6):16-19,4.基金项目
教育部春晖计划项目(Z2011076) （Z2011076）
