書誌事項
- タイトル別名
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- Grain Size and Piezoelectric Properties of (Ba, K, Na)NbO3 Lead-Free Ceramics
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Grain size and piezoelectric properties were investigated in (K, Na)NbO3 ceramics substituted with Ba for K and Na by 1 to 5 mol%, in anticipation of high piezoelectric properties. The grain size strongly depended on the A/B ratio in perovskite structure. The grain growth phenomenon was markedly similar to that of BaTiO3 semiconducting ceramics with donor additives. Piezoelectric properties were strongly affected by grain size. MnO additive was added to suppress grain growth anomaly, dense ceramic body formation and withstanding voltage enhancement. However, a manufacturing process, in which MnCO3 was directly mixed to other raw material powders, resulted in the formation of large pores ranging to 1 mm diameter in their ceramic bodies. The powder obtained by previously calcining the mixture of Nb2O5 and MnCO3 was used as a raw material for MnO addition, in order to prevent the formation of large pores. By adding 0.5 mol% MnO, grain growth anomaly was inhibited, and a uniform and dense ceramic body was consequently obtained without piezoelectric property degradation.<br>
収録刊行物
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- Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)
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Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 114 (1329), 386-391, 2006
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390282680253212928
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- NII論文ID
- 110004719457
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- NII書誌ID
- AN10040326
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- ISSN
- 18821022
- 09145400
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- NDL書誌ID
- 7953180
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可