| Project/Area Number |
23560815
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群) |
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Principal Investigator |
ISHII Keisuke 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, その他部局等, 准教授 (30257208)
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| Co-Investigator(Kenkyū-buntansha) |
木村 敏夫 慶應義塾大学, 理工学部, 名誉教授 (70090040)
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| Co-Investigator(Renkei-kenkyūsha) |
TASHIRO Shinjiro 防衛大学校, 電気情報学群, 准教授 (00546062)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 圧電セラミックス / 圧延配向法 / テンプレート粒成長法 / 非鉛材料 / ペロブスカイト |
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| Research Abstract |
The effective orientation control technique for (K,Na)NbO3(KNN) system ceramics which are typical lead-free Perovskite type piezoelectric materials were established. This technique mainly consists of the rolling-extend method and the improved single-step molten salt method for preparing plate-like NaNbO3(NN) templates. NN templates, by which the highly textured ceramics are obtained, were synthesized in high-yield by optimizing mixture ratio of the starting materials. The textured KNN system ceramics with the orientation factor higher than 95% were fabricated by employing these NN templates and preheating technique. In addition, the spin-forming-extended method, which is the improved rolling-extended method, was developed for orientation control of tungsten-bronze-structured piezoelectric ceramics. By utilizing this technique, the large rectangular ceramics c-axis oriented in the thickness direction, are easily fabricated.
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