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X射线衍射测试表明,用氧化物烧结法制备的PZT粉末,其Zr与Ti的原子比为52:48, 为纯四方钙钛矿型结晶相;用模压/烧结工艺制备了六种含 PZT不同体积分数的 PZT/PVDF复合材 料;介电性和压电性的测试表明,随着 PZT体积分数的增加,材料的电性能参数呈非线性增大,当 PZT 的体积分数超过 70%时,介电常数。和压电常数 d33值迅速增加,当 PZT体积分数达到 90%时,其 电性能与纯 PZT相当。
X-ray diffraction tests showed that the PZT powder prepared by oxide sintering had a pure tetragonal perovskite crystal phase with an atomic ratio of Zr to Ti of 52:48. Six different PZT-containing powders with different PZT were prepared by molding / sintering Volume fraction of PZT / PVDF composites. The dielectric and piezoelectric properties of the composites show that with the increase of the volume fraction of PZT, the electrical properties of the composites increase nonlinearly. When the volume fraction of PZT exceeds 70% Electric constant. And the piezoelectric constant d33 rapidly increases. When the volume fraction of PZT reaches 90%, its electrical properties are comparable to that of pure PZT.