高四方性超细 BaTiO 3 纳米粉体的制备与性能研究
高四方性超细 BaTiO 3 纳米粉体的制备与性能研究
作者:
作者单位:

作者简介:

通讯作者:

基金项目:

国家自然科学基金项目(51802142);新型电子元器件关键材料与工艺国家重点实验室项目(FHR-JS-202011012, FHR-JS-202011013, FHR-JS-202011014);先进电子元器件联合创新中心(FHR-JS-202103001)

伦理声明:



Fabrication and Properties of Ultra-Fine BaTiO 3 Particles with High Tetragonality
Author:
Ethical statement:

Affiliation:

Funding:

National Natural Science Foundation of China (51802142), State Key Laboratory of Key Materials and Processes for New Electronic Components (FHR-JS-202011012, FHR- JS-202011013, FHR-JS-202011014) and Joint Innovation Centre for Advanced Electronic Components (FHR- JS-202103001)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    高四方性的 BaTiO 3 超细粉体是下一代多层陶瓷电容器的关键材料。该文探究了砂磨介质尺寸和原料 TiO 2 晶相对反应物活性、产物介电性能的影响,并利用砂磨固相法成功合成了高四方性 BaTiO 3超细粉体。分析场发射扫描电子显微镜照片和 X 射线光电子能谱发现,细砂磨介质粉碎原料的效率更高,机械活化作用更强。Raman 光谱和 X 射线衍射图谱显示,在高能砂磨过程中,TiO 2 由锐钛矿相先后转变为 TiO 2 -II 相、金红石相。分析微商热重曲线和 X 射线衍射,结果表明,砂磨介质更能有效降低反应温度和抑制 Ba 2 TiO 4 的生成。此外,高分辨透射电子显微镜图像揭示了 BaTiO 3 的形成是 Ba 2+向 TiO 2 晶格扩散的过程。该文相关实验结果表明,利用直径为 0.1 mm 的 ZrO 2 磨球对锐钛矿相 TiO 2 和 BaCO 3 混合物砂磨 4 h,并在 1 100 ℃ 煅烧 3 h 后,获得了平均粒径为 186 nm、四方性为 1.009 2且分散性良好的 BaTiO 3 粉体,该粉体在 1 250 ℃ 烧结的陶瓷相对密度为 96.11%,居里点(137.8 ℃)的介电常数峰值为 8 677。

    Abstract:

    Ultra-fine?BaTiO 3 powder with high tetragonality is the key material for the next generation of multilayer?ceramic?capacitors.?In?this?paper,?effects?of?medium?size?of?the?sand-milling?and?the?phase?of the raw TiO 2 on the reaction activity and dielectric properties of the product were investigated, and ultra-fine?BaTiO 3 powder with high tetragonality was synthesized via the sand-milling process. Field emission scanning electron microscope images and X-ray photoelectron spectroscopy showed that the fine sand-milling?media?was?more?effective?in?crushing?raw?materials?and?mechanical?activation.?Raman?spectroscopy and?X-ray?diffraction?pattern?proved?that?the?anatase?phase?of?TiO 2 was transformed into TiO 2 -II phase and rutile?phase?successively?during?the?sand-milling?process.?Derivative?thermogravimetry?and?X-ray?diffraction analysis?proved?that?fine?sand-milling?media?was?better?at?lowering?the?reaction?temperature?and?inhibiting the formation of Ba 2 TiO 4 . The high resolution transmission electron microscopy image revealed that the formation of BaTiO 3 is a process by which Ba 2+ diffuses into the TiO 2 lattice. The anatase TiO 2 /BaCO 3 mixture were sand-milled for 4 h, using ZrO 2 balls with a diameter of 0.1 mm, and calcined at 1 100 ℃ for 3 h. Then a well-dispersed BaTiO 3 powder with an average particle size of 186 nm and tetragonality of 1.009 2 was obtained. Sintered at 1 250 ℃, the density of the ceramic derived of as-prepared powder was 96.11%, and the peak value of the dielectric constant at the Curie point (137.8 ℃) was 8 677.

    参考文献
    相似文献
    引证文献
引用本文

引文格式
司韶康,张蕾,温佳鑫,于淑会,曹秀华,付振晓,孙蓉.高四方性超细 BaTiO 3 纳米粉体的制备与性能研究 [J].集成技术,2022,11(3):108-120

Citing format
SI Shaokang, ZHANG Lei, WEN Jiaxin, YU Shuhui, CAO Xiuhua, FU Zhenxiao, SUN Rong. Fabrication and Properties of Ultra-Fine BaTiO 3 Particles with High Tetragonality[J]. Journal of Integration Technology,2022,11(3):108-120

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-05-18
  • 出版日期: