...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >preparation and characterization of sol-gel derived sodium-potassium bismuth titanate powders and thick films deposited by screen printing
【24h】

preparation and characterization of sol-gel derived sodium-potassium bismuth titanate powders and thick films deposited by screen printing

机译：溶胶-凝胶法制取钛酸钾钛酸钾钠粉末及厚膜的制备与表征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Bi_(0.5)(Na_(0.82)K_(0.18))_(0.5)TiO_3 (NKBT) lead-free thick films have been successfully deposited on Pt electroded alumina substrates using screen printing from the sol-gel derived powders. Fourier transform infrared (FT-IR) spectroscopy, differential thermal analysis (DTA), thermogravimetric analysis (TG) and X-ray diffraction (XRD) were used to characterize the process of crystallization. The cubic shape particulates of the order of 140-260 nm in size can be obtained by calcining the xerogel at 650 °C, and there is no obvious agglomeration of the NKBT powders. The resulting typical 90 μm thick NKBT films sintered at 1140 °C exhibit relative dielectric constant of 836 (at 10 kHz), dielectric constant of 2.9%, remanent polarization of 25.6μC/cm~2, coercive field of 69.3 kV/cm, and longitudinal effective piezoelectric coefficient, d_(33eff) of 95 pm/V. The improvement of the electric properties can be attributed to the larger domain wall density and less domain wall pinning resulting from the increased film thickness of NKBT thick films.
机译：Bi_（0.5）（Na_（0.82）K_（0.18））_（0.5）TiO_3（NKBT）无铅厚膜已通过丝网印刷从溶胶-凝胶衍生的粉末中成功沉积在Pt电极氧化铝基板上。傅里叶变换红外（FT-IR）光谱，差热分析（​​DTA），热重分析（TG）和X射线衍射（XRD）用来表征结晶过程。通过在650℃下煅烧干凝胶可以获得尺寸为140-260nm的立方体形状的颗粒，并且NKBT粉末没有明显的团聚。在1140°C下烧结的所得典型90μm厚NKBT薄膜具有836（在10 kHz时）的相对介电常数，2.9％的介电常数，25.6μC/ cm〜2的剩余极化强度，69.3 kV / cm的矫顽场和纵向有效压电系数d_（33eff）为95 pm / V。电性能的改善可归因于由NKBT厚膜的增加的膜厚度导致的更大的畴壁密度和更少的畴壁钉扎。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号