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Li L, Zhang S, Xu Z, Wen F, Geng X, Lee HJ, Shrout TR. 1-3 piezoelectric composites for high temperature transducer applications. JOURNAL OF PHYSICS D: APPLIED PHYSICS 2013; 46:165306. [PMID: 23729863 PMCID: PMC3665611 DOI: 10.1088/0022-3727/46/16/165306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
High temperature Pb(Zr,Ti)O3 /epoxy 1-3 composites were fabricated using the dice and fill method. The epoxy filler was modified with glass spheres in order to improve the thermal reliability of the composites at elevated temperatures. Temperature dependent dielectric and electromechanical properties of the composites were measured after aging at 250°C with different dwelling times. Obvious cracks were observed and the electrodes were damaged in the composite with unmodified epoxy after 200 hours, leading to the failure of the composite. In contrast, composites with >12 vol% glass sphere loaded epoxies were found to exhibit minimal electrical property variation after aging for 500 hours, with dielectric permittivity, piezoelectric coefficient and electromechanical coupling being on the order of 940, 310pC/N and 57%, respectively. This is due to the improved thermal expansion behavior of the modified filler.
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Affiliation(s)
- Lili Li
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. China
- Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Shujun Zhang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. China
- Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Zhuo Xu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Fei Wen
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Xuecang Geng
- Blatek Inc., State College, Pennsylvania 16801, USA
| | - Hyeong Jae Lee
- Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Thomas R. Shrout
- Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Corcione CE, Freuli F, Maffezzoli A. The aspect ratio of epoxy matrix nanocomposites reinforced with graphene stacks. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23292] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Corcione CE, Cavallo A, Pesce E, Greco A, Maffezzoli A. Evaluation of the degree of dispersion of nanofillers by mechanical, rheological, and permeability analysis. POLYM ENG SCI 2011. [DOI: 10.1002/pen.21929] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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