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- Title
EPMA and TEM investigations on the interdiffusion layer of the PNN/PZT functionally gradient piezoelectric ceramics.
- Authors
Xinhua Zhu; Jianmin Zhu; Shunhua Zhou; Qi Li; Zhiguo Liu; Naiben Ming; Zhongyan Meng
- Abstract
The compositional profile, distribution of the phases and the ordering behavior in the interdiffusion layer of the PNN/PZT functionally gradient piezoelectric ceramics have been investigated by electron probe microbeam analyses (EPMA) and transmission electron microscopy (TEM) respectively. The results show that the thickness of the interdiffusion layers (d) for Ni2+, Nb5+, Ti4+ and Zr4+ ions are ordered as dNi2+ > dNb5+ > dTi4+ > dZr4+. It is demonstrated by TEM observation and selected area electron diffraction (SAED) patterns that a clear interface between the rhombohedral and pseudocubic phases exists in the interdiffusion layer. The SAED studies also reveal the presence of F spots along the [111] direction of the perovskite cubic unit cell. The origin of this superstructure is determined.
- Subjects
PEROVSKITE; DIFFUSION; ELECTRON diffraction; ECONOMIC determinism; HEMATITE; PIEZOELECTRIC materials
- Publication
Journal of Materials Science, 2000, Vol 35, Issue 4, p1031
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/A:1004783332166