Fabrication of bimorph lead zirconate titanate thick films on metal substrates via the cold sintering-assisted process
| Autor: | Carl Morandi, Clive A. Randall, Lisheng Gao, Susan Trolier-McKinstry, Sinan Dursun, Dixiong Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Fabrication Materials science Polymers and Plastics Metals and Alloys Bimorph Sintering Relative permittivity 02 engineering and technology 021001 nanoscience & nanotechnology Lead zirconate titanate 01 natural sciences Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound chemistry law 0103 physical sciences Lamination Ceramics and Composites Dissipation factor Composite material 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Acta Materialia. 195:482-490 |
| ISSN: | 1359-6454 |
| DOI: | 10.1016/j.actamat.2020.05.053 |
| Popis: | A novel process was developed for the fabrication of 5–50 µm lead zirconate titanate (PZT) thick films on metal substrates. Tape cast PZT with a methyl cellulose binder was burned out at 275 °C, humidified, and then partially densified at 300 °C by cold sintering with a wet lead nitrate liquid phase. Lamination of the green tape on dense metal foils led to incomplete densification due to constrained sintering. However, when metal foils were replaced with tape cast Cu, fully sintered PZT/Cu/PZT composites were acquired after a secondary heat treatment at 800 °C. The PZT films has a relative permittivity over 500 and a loss tangent ~12% at 100 Hz because of a Cu2O interface between the PZT and Cu presumably formed during the cold sintering process. The polarization-electric field hysteresis loop shows a remanent polarization over 20 µC/cm2, and the e31,f of the samples is -4.7 C/m2. |
| Databáze: | OpenAIRE |
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