High Purity, Crystallinity and Electromechanical Sensitivity of Lead-Free (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 Synthesized Using an EDTA/glycerol Modified Pechini Method
A single (Ba<sub>0.85</sub>Ca<sub>0.15</sub>)(Zr<sub>0.10</sub>Ti<sub>0.90</sub>)O<sub>3</sub> phase material with a tetragonal structure is processed and synthesized with a modified Pechini method using ethylenediaminetetraacetic acid and...
| Autores: | , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/385709 |
| Acceso en línea: | http://hdl.handle.net/10261/385709 |
| Access Level: | acceso abierto |
| Palabra clave: | Ba0.85Ca0.15Ti0.9Zr0.1O3 Lead-free piezoceramics Sol–gel synthesis Microstructure EDTA-glycerol |
| Sumario: | A single (Ba<sub>0.85</sub>Ca<sub>0.15</sub>)(Zr<sub>0.10</sub>Ti<sub>0.90</sub>)O<sub>3</sub> phase material with a tetragonal structure is processed and synthesized with a modified Pechini method using ethylenediaminetetraacetic acid and glycerol as chelating and esterifying agents, respectively. The complete chemical transformation to the desired phase is achieved at 900 °C, which is 300 °C lower than conventional synthesis methods. Its consolidation, reaching up to 91% relative density, is carried out at 1400 °C. It is clearly demonstrated that the use of ethylenediaminetetraacetic acid and glycerol reagents is particularly beneficial for inducing a homogeneous grain size distribution (10 μm), which leads to very promising electromechanical properties (d<sub>33</sub> = 451 pC/N; d<sub>31</sub> = 160 pC/N; kp = 0.40; <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>ε</mi><msubsup><mo>′</mo><mrow><mn>33</mn></mrow><mi>T</mi></msubsup></mrow></semantics></math></inline-formula> = 4790 and Q<sub>m</sub> = 358) of the densified system. |
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