硫铁铝酸钡钙矿物电学性能的研究  

Electricity Performance of Barium-Bearing Calcium Sulfo-Ferritealuminate Mineral

作　　者：于春红[1] 常均[1] 李宁[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,山东济南250022

出　　处：《济南大学学报（自然科学版）》2006年第3期189-192,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(50502017);国家863计划基金(2003AA332050);山东省自然科学基金(Q2002F03)

摘　　要：研究了硫铁铝酸钡钙系列矿物水化1 d3、d和28 d水化样的电学性能。在40 Hz^50 kHz频率范围内,随水化龄期的增加各试样阻抗均下降;且水化时间对硫铁铝酸钡钙矿物相对介电常数的影响很大,表现出不稳定性;在低频40Hz^10 kHz之间,介电损耗正切值tanσ无规律,但在10~50kHz之间,tanσ随频率的增加呈下降趋势。硫铁铝酸钡钙矿物的水化相对稳定期较硫铝酸钡钙矿物提前,在水化后期均在Nyquist图谱中出现了Randles型图形。The electricity performance of barium- beating calcium sulfo - ferritealuminate mineral hydrated 1 d, 3 d and 28 d was investigated. In the frequency range of 40 Hz - 50 kHz, the impedance of barium - beating calcium sulfo - ferritealuminate mineral decreases with the increase of hydration ages; hydration ages affect relative dielectric constant greatly, and the relative dielectric constant shows fluctuant. The dielectric loss has no rule in the low frequency range of 40 Hz- 10 kHz, but it decreases with the increase of frequency in the range of 10 - 50 kHz. Figure of Randles appears in the figure of Nyquist, which shows that the time of stabilization of Ba bearing calcium sulfo - ferritealuminate mineral is earlier than that of Ba- bearing sulfoaluminate mineral.

关 键 词：硫铁铝酸钡钙 相对介电常数 介电损耗 阻抗 Nyquist图 

分 类 号：TQ172[化学工程—水泥工业]