Piezoelectric and dielectric behavior of 0-3 cement-based composites mixed with carbon black
Piezoelectric and dielectric behavior of 0-3 cement-based composites mixed with carbon black
复制标题
掺炭黑0-3水泥基复合材料的压电和介电行为
DOI：
10.1016/j.jeurceramsoc.2008.11.014
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发表时间：
2009-07-01
影响因子：
5.7
通讯作者：
Fan, Runhua
中科院分区：
文献类型：
--
作者：
Gong, Hongyu;Li, Zongjin;Fan, Runhua
水泥基 0-3 型压电复合材料由白水泥、锆钛酸铅 (PZT) 粉末和少量炭黑制成，在土木工程中具有潜在的应用前景。研究了炭黑/PZT/水泥复合材料的老化和极化行为的性质。结果表明，使用导电炭黑相可以促进室温下的极化过程。还研究了炭黑对压电和介电性能的影响。事实证明，由于其导电性能，掺入少量炭黑可以显着提高复合材料的压电灵敏度。在极化场为 4 kV/mm、极化时间为 20 min 时，含有 70 vol.% PZT 和 1.0 vol.% 炭黑的复合材料的 d(33)、epsilon(r)、tan δ 和 K-t 值分别为 28.5 pC/N、202.6、0.19 和 12.2%。 (C) 2008 Elsevier Ltd. 保留所有权利。
Cement-based 0-3 type piezoelectric composites, fabricated from white cement, lead zirconate titanate (PZT) powder and small amounts of carbon black, are exploited for potential applications in civil engineering. The nature of the aging and poling behavior of the carbon black/PZT/cement composites is investigated. It is shown that the use of a conductive carbon black phase can facilitate the poling process at room temperature. The influences of the carbon black on the piezoelectric and dielectric properties are studied as well. It is demonstrated that the piezoelectric sensitivities of the composites can be dramatically enhanced by incorporation of small amounts of carbon black, due to its conductive properties. With a poling field of 4 kV/mm and poling time of 20 min, the d(33), epsilon(r), tan delta and K-t values of the composite containing 70 vol.% PZT and 1.0 vol.% carbon black are 28.5 pC/N, 202.6, 0.19 and 12.2%, respectively. (C) 2008 Elsevier Ltd. All rights reserved.