黄祺薇,梁博,谢雨芹,朱明璋,邴丽娜,沈振江

• 1:海南师范大学物理与电子工程学院
• 2:海南省院士创新平台
• 3:海南省激光技术与光电功能材料重点实验室

摘要(Abstract)：

采用固相烧结法将椰壳炭掺杂到纯钛酸钡中，通过调控椰壳炭的掺杂量和烧结工艺条件，研究其对钛酸钡陶瓷介电性能的影响。结果表明：所有样品均为钛酸钡四方相结构，无杂相生成；在掺杂椰壳炭的陶瓷样品中，晶粒粒径变大，晶格常数变大，峰值皆有所右移；在BaTiO_3&1.00%～4.00%C的样品中，介电损耗大部分都低于0.2,其中BaTiO_3&1.00%C样品在预烧温度为900℃时介电损耗最低，达到0.068,晶粒尺寸主要在1.3～1.6μm之间，此时相对介电常数频率稳定性也有显著提升，介电性能最优；这是由于在烧结过程中，掺杂离子进入钙钛矿结构BaTiO_3中的B位，C~(4+)作为电子受体中和了氧空位，减少自由电子的数量，抑制Ti~(4+)的还原，可以有效地降低钛酸钡陶瓷的介电损耗。

关键词(KeyWords)： 椰壳炭;钛酸钡陶瓷;烧结气氛;介电性能

Abstract:

Keywords:

基金项目(Foundation): 海南省自然科学基金(220RC595);海南省自然科学基金(521QN240);; 国家自然科学基金(11304069);; 海南省院士创新平台科研项目(YSPTZX202207);; 海南省激光技术与光电功能材料重点实验室经费

作者(Author): 黄祺薇,梁博,谢雨芹,朱明璋,邴丽娜,沈振江

DOI: 10.13289/j.issn.1009-6264.2024-0352

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