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首页> 外文期刊>日本セラミックス協会学術論文誌 >Effect of Li_2Si_2O_5 Addition on the Sintering and Microstructure of BaTiO_3
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Effect of Li_2Si_2O_5 Addition on the Sintering and Microstructure of BaTiO_3

机译：Li_2Si_2O_5添加对BaTiO_3烧结及微观结构的影响

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摘要

Densification behavior and microstructural characteristics were examined for BaTiO_3 containing 0.25-2.00 mass percent Li_2Si_2O_5. Li_2Si_2O_5 lowered the sintering temperature of BaTiO_3. The optimum concentration to obtain high density was 1 mass percent. A concentration smaller than the optimum value did not effectively lower the sintering temperature, while a larger concentration resulted in the formation of inhomogeneous microstructure. There was an optimum sintering temperature to obtain compacts with maximum density. Extensive grain growth occurred above the optimum temperature. The grain boundary phase, which was a liquid phase at the sintering temperature, contained TiO_2-rich particles, whose distribution was non-uniform. The formation mechanisms of such microstructure were discussed.
机译：研究了含有0.25-2.00质量百分比的Li_2Si_2O_5的BaTiO_3的致密化行为和微观结构特征。 Li_2Si_2O_5降低了BaTiO_3的烧结温度。获得高密度的最佳浓度为1质量％。小于最佳值的浓度不能有效地降低烧结温度，而较大的浓度会导致形成不均匀的微观结构。有一个最佳的烧结温度以获得具有最大密度的压块。在最佳温度以上出现大量晶粒生长。在烧结温度下为液相的晶界相含有富含TiO 2的颗粒，其分布不均匀。讨论了这种微观结构的形成机理。

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