Fe_2O_3对硫铁铝酸钡钙矿物电学性能的影响  

EFFECT OF Fe_2O_3 ON THE ELECTRICAL PROPERTIES OF BARIUM-BEARING CALCIUM SULFO-FERRITE ALUMINATE MINERAL

作　　者：于春红[1] 常钧[1] 黄世峰[1] 叶正茂[1] 程新[1] 

机构地区：[1]济南大学材料科学与工程学院,济南250022

出　　处：《硅酸盐学报》2006年第11期1411-1415,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50502017);山东省中青年科学家研究奖励基金(2005B504005)资助项目。

摘　　要：以分析纯化学试剂为原料合成了硫铁铝酸钡钙系列单矿物,研究了该矿物水化1d,7d和28d水化样品的电阻率、阻抗、相对介电常数、介电损耗等电学性能。结果表明随着Fe2O3含量的增加,样品的电阻率、阻抗先减小,后增大;相对介电常数则呈相反的趋势;介电损耗在水化早期变化无规律,水化后期高频区介电损耗是先增大,后减小。A barium-bearing calcium sulfo-ferrite aluminate series for new cement materials was synthesized using pure chemical reagents as raw materials. The electrical properties （resistivity, impedance, relative dielectric constant and dielectric loss） of barium-bearing calcium sulfo-ferrite aluminate cement samples hydrated for 1 d, 7 d and 28 d were investigated. The results indicated that with the increase of the molar fraction of Fe2O3, the resistively and impedance decreased gradually, and then increased. But the change of the relative dielectric constant showed the opposite change. The dielectric loss of the material was irregular at the early age of hydration; it first increased and then decreased in the high frequency range at the late age of hydration.

关 键 词：硫铁铝酸钡钙 电阻率 阻抗 相对介电常数 介电损耗 

分 类 号：TQ174[化学工程—陶瓷工业]