期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 727, 期 -, 页码 696-705出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.08.175
关键词
Plasma spraying; Barium titanate; Zinc oxide; Microstructure; Splat morphology
资金
- National Natural Science Foundation of China [51775554, 51675531, 51535011]
- Fundamental Research Funds for the Central Universities [HEUCFP201608]
Three contents of zinc oxide (2 wt %, 4 wt % and 6 wt %) were added into raw BaTiO3 powders. The maximum relative permittivity value (er) is in the range 230-406 and the dielectric loss (tan delta) varies between 0.18 and 0.09 for all ZnO modified BaTiO3 coatings for frequency1 kHz at ambient temperature. The reasons for enhancing the relative permittivity are attributed to the elimination of micro-cracks and pores. The detail discussion was conducted on the characteristics morphologies (cross section, fracture surface and spreading behavior of BaTiO3 vertical bar xwt. % ZnO composite powders) and phase. With the analysis, the addition of ZnO leads to the improvement in the melting state and increment in amorphous phase. Zn existed in the form of secondary phase (ZnO) and substitution in the BaTiO3 lattice. The enhancement in structure and dielectric performance is highly discussed based on the phase equilibria and chemical defect. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据