Microstructure of Lead Magnesium Niobate Ceramics Synthesised by Wet Chemical Method

Zhang Wenlin; Du Guowei; Xiao Zhigang; Ma Zhaoceng; Lin Shi

doi:10.13374/j.issn1001-053x.1997.04.035

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Zhang Wenlin, Du Guowei, Xiao Zhigang, Ma Zhaoceng, Lin Shi. Microstructure of Lead Magnesium Niobate Ceramics Synthesised by Wet Chemical Method[J]. Chinese Journal of Engineering, 1997, 19(4): 378-381. doi: 10.13374/j.issn1001-053x.1997.04.035

Citation:

Zhang Wenlin, Du Guowei, Xiao Zhigang, Ma Zhaoceng, Lin Shi. Microstructure of Lead Magnesium Niobate Ceramics Synthesised by Wet Chemical Method[J]. Chinese Journal of Engineering, 1997, 19(4): 378-381. doi: 10.13374/j.issn1001-053x.1997.04.035

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Microstructure of Lead Magnesium Niobate Ceramics Synthesised by Wet Chemical Method

doi: 10.13374/j.issn1001-053x.1997.04.035

Applied Science School, UST Beijing, Beijing 100083, China

Received Date: 1996-09-12
Available Online: 2021-09-04

Abstract

Abstract

Lead magnesium niobate ceramics have been synthesised by wet chemical method and their microstructures are studied by means of X-ray diffraction(XRD,scanning electron microscopy(SEM) and transndssion electron microscopy(TEM). The experimental results show that pure perovskite PMN ceramics is obtained during calcining at 800℃ for 1h. The grain size of PMN ceramic varies from 150nm to 200nm after sintering at 85O~ 920 ℃. The pyrochlore phase is situated at the grain boundaries of the perovskite phase if it occurs. Excess PbO phase existing in the ceramic is in favour of sintering of the cerarnic powder.
- lead magnesium niobate ceramics,
- pyrochlore phase,
- perovskite phase