Possibility of one-step approach to 0.7PZN-0.3BT multiple ceramics from component constituent oxides

L. B. Kong; J. Ma; P. F. Zhang

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Possibility of one-step approach to 0.7PZN-0.3BT multiple ceramics from component constituent oxides

机译：Possibility of one-step approach to 0.7PZN-0.3BT multiple ceramics from component constituent oxides

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摘要

0.7Pb(Zn_(1/3)Nb_(2/3))O_3-0.3BaTiO_3 (PZN-BT) ceramics were prepared directly from their constituent oxide mixture via a one-step sintering process without involving the calcination step. Reaction of the oxide mixture was observed to occur at about 800 deg C through the expansion of the compact at that temperature. XRD results show that formation of single phase perovskite PZN-BT was achieved at temperature from 1050 to 1125 deg C while the pyrochlore phase appeared at 1150 deg C. When sintered at 1125 deg C for 1 h, the PZN-BT ceramics produced using the present technique were measured to have a density of approx 99 percent of the theoretical density, an average grain size of 6.2 mu m, a dielectric constant of 2826 and a dielectric loss of 0.03. The present results indicate that it is possible to prepare Pb(Zn_(1/3)Nb_(2/3))O_3-based ceramics via a one-step process.

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来源
《Materials Letters》 |2002年第3期|205-210|共6页
作者
L. B. Kong; J. Ma; P. F. Zhang;
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作者单位

School of Materials Engineering, Nanyang Technological University, Block N4, B2 Nanyang Avenue, Singapore, 639798, Singapore;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
perovskite; single phase ceramic; direct high-temperature synthesis from constituent oxides;

Possibility of one-step approach to 0.7PZN-0.3BT multiple ceramics from component constituent oxides

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