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钛酸铜钙巨介电陶瓷的制备与B位钼掺杂改性研究
  • ISSN号：1001-1560
  • 期刊名称：《材料保护》
  • 时间：0
  • 分类：TQ174.1[化学工程—陶瓷工业;化学工程—硅酸盐工业]
  • 作者机构：[1]西北工业大学材料学院凝固技术国家重点实验室
  • 相关基金：国家自然科学基金(51172187);教育部博士点基金(20116102130002);111基地(B08040)资助
作者： 樊慧庆[1], 郑茜[1]
关键词： 巨介电陶瓷, 钛酸钙铜, B位掺杂, 介电性能
中文摘要：

采用固相反应法制备出B位Mo4+掺杂的钛酸钙铜(CaCu3Ti4O12)陶瓷,探讨了其相结构、显微组织和电学性能。Mo4+掺杂后CaCu3Ti4O12介电常数为8 187,100 Hz~1 MHz频率稳定性好,介电损耗值小于0.3,电学性能的改善与Mo4+掺杂后导致晶粒尺寸增大和晶粒电阻减小有关。通过对CaCu3Ti4-x Mo x O12-δ(x=0.002 5)陶瓷变温介电频谱的分析,得到其介电弛豫的晶界热激活能(E a)为0.529 eV。

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期刊信息
  • 《材料保护》
  • 中国科技核心期刊
  • 主管单位:中国机械工业联合会
  • 主办单位:中国腐蚀与防护学会 中国表面工程协会 武汉材料保护研究所
  • 主编：魏兆军
  • 地址：武汉市宝丰二路126号
  • 邮编：430030
  • 邮箱：bmgczx@126.com
  • 电话：027-83330037
  • 国际标准刊号：ISSN：1001-1560
  • 国内统一刊号：ISSN：42-1215/TB
  • 邮发代号:38-30
  • 获奖情况:
  • 中国优秀期刊,中文核心期刊,中国科技论文统计源用刊,中国期刊方阵“双高”期刊
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  • 被引量:17441