2015 Fiscal Year Final Research Report
Fabrication of functionally graded piezoelectric ceramics by using electrophoretic deposition and its life evaluation
| Project/Area Number |
25420028
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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 |
Materials/Mechanics of materials
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| Research Institution | Kochi University of Technology |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 電気泳動堆積法 / 圧電セラミックス / アクチュエータ / 破壊じん性値 |
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| Outline of Final Research Achievements |
In this study, the fabrication process ofa functionally graded piezoelectric material by using the electrophoretic deposition (EPD) was established. The bilayer lead zirconate titanate (PZT) piezoelectric ceramic material was fabricated by applying this process and its characteristics were evaluated. The results obtained are as follows. In EPD, amount of deposition per hour depend on the pH of suspension. It was clarified that the optimal pH is about 5 in deposition of PZT. Measuring fracture toughness of the PZT ceramics made by this process showed that the fracture toughness in the direction of deposition is about 50 % lower than that in the deposition surface, so there is strong anisotropy of strength in the material by using EPD.
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| Free Research Field |
工学
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