| Presentation | 2015-11-06 The microstructure and piezoelectric property of BKT ceramics Tomoya Kodama, Noriko Bamba, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Bismuth potassium titanate ((Bi0.5K0.5)TiO3, BKT) is one of the representative lead-free piezoelectric materials, and has a high Curie Temperature, TC=380℃. BKT doped 0 – 40 mol% barium titanate (BaTiO3, BT) were prepared in order to improve piezoelectric constant, d33, of BKT, and their structure and piezoelectric properties were investigated in this work. BKT-BT could be sintered at higher temperatures by adding BT with high melting point, and grain growth was enhanced. Since d33 is affected by the grain size, BKT ceramics doped 10 mol% BT which has high density (97%) and well grain growth microstructure (mean grain size was 1.21 µm) showed 107.3 pC/N in d33. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | lead-free piezoelectric ceramics / Bismuth potassium titanate / Barium titanate / Solid solution / Grain growth / Piezoelectric constant |
| Paper # | CPM2015-86 |
| Date of Issue | 2015-10-30 (CPM) |
| Conference Information | |
| Committee | CPM |
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| Conference Date | 2015/11/6(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Machinaka Campus Nagaoka |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Thin film processing, etc. |
| Chair | Satoru Noge(Numazu National College of Tech.) |
| Vice Chair | Fumihiko Hirose(Yamagata Univ.) |
| Secretary | Fumihiko Hirose(NTT) |
| Assistant | Takashi Sakamoto(NTT) / Yuichi Nakamura(Toyohashi Univ. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Component Parts and Materials |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | The microstructure and piezoelectric property of BKT ceramics |
| Sub Title (in English) | |
| Keyword(1) | lead-free piezoelectric ceramics |
| Keyword(2) | Bismuth potassium titanate |
| Keyword(3) | Barium titanate |
| Keyword(4) | Solid solution |
| Keyword(5) | Grain growth |
| Keyword(6) | Piezoelectric constant |
| 1st Author's Name | Tomoya Kodama |
| 1st Author's Affiliation | Shinshu University(Shinshu Univ.) |
| 2nd Author's Name | Noriko Bamba |
| 2nd Author's Affiliation | Shinshu University(Shinshu Univ.) |
| Date | 2015-11-06 |
| Paper # | CPM2015-86 |
| Volume (vol) | vol.115 |
| Number (no) | CPM-297 |
| Page | pp.pp.15-18(CPM), |
| #Pages | 4 |
| Date of Issue | 2015-10-30 (CPM) |