Effects of the Water/Cement Ratio on the Properties of 3-3 Type Cement-Based Piezoelectric Composites

被引：2

作者：

Wang, Jian-Hong ^{[1
]}

Sun, Hao-Xin ^{[1
]}

Dong, Ying-Ge ^{[1
]}

Cheng, Zhi ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China

来源：

MATERIALS | 2022年 / 15卷 / 08期

关键词：

3-3 type cement-based piezoelectric composites; water; cement ratio; microstructure; electromechanical properties; electrical properties; CARBON NANOTUBES; MICROSTRUCTURE; BEHAVIOR;

D O I：

10.3390/ma15082760

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, 3-3 type porous lead zirconate titanate (PZT) ceramics were fabricated by incorporating particle-stabilized foams using the gel-casting method. Then, Portland cement pastes with different water/cement ratios (w/c) were cast into the porous ceramics to produce cement-based piezoelectric (PZT-PC) composites. The effects of w/c on phase structure, microscopic morphology, and electrical properties were studied. The results showed that the amount of hydrated cement products and the density of the PZT-PC composites increased with the increase of w/c from 0.3 to 0.9 and then decreased till w/c achieved a value of 1.1. Correspondingly, the values of both epsilon(r) and d(33) increased with the density of the PZT-PC composites, resulting in less defects and greater poling efficiency. When w/c was maintained at 0.9, the 3-3 type cement-based piezoelectric composites presented the greatest K-t value of 40.14% and the lowest Z value of 6.98 MRayls, becoming suitable for applications in civil engineering for structural health monitoring.

引用

页数：10

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