High piezoelectricity 0–3 cement-based piezoelectric composites
High piezoelectricity 0–3 cement-based piezoelectric composites
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DOI：
10.1016/j.matlet.2012.02.094
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发表时间：
2012-06
影响因子：
3
通讯作者：
Fazhou Wang;Hao Wang;Yanli Song;Huajun Sun
中科院分区：
文献类型：
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作者：
Fazhou Wang;Hao Wang;Yanli Song;Huajun Sun
0-3以波特兰水泥为基体，锆钛酸铅（PZT）为功能相，高介电常数、高比表面积粉体为增强相，制备了水泥基压电复合材料。复合材料采用压制法制备，抗压强度为96 MPa。结果表明，在极化电压为1.5kV/mm，水蒸气固化条件下，当PZT和增强相含量为60 vol.%时，24 h压电应变常数d33为32.4pC/N和20重量%，分别为：d33在室温干燥条件下养护38天后超过70 pC/N，90天后逐渐稳定在99.0pC/N。这表现出上级压电性能。
0–3 cement-based piezoelectric composites were prepared with Portland cement as matrix, lead zirconate titanate (abbreviation PZT) as functional phase and powder with high dielectric constant and high specific surface area as enhanced phase. The composites were fabricated with compacted method and the compressive strength was 96MPa. Results indicated that, with 1.5kV/mm polarization voltage and steam curing, the 24h piezoelectric strain constant d33was 32.4pC/N when the contents of PZT and enhanced phase were 60vol.% and 20wt.%, respectively; d33exceeded 70pC/N after curing at room temperature and dry atmosphere for 38days; gradually, it reached a constant value 99.0pC/N after 90days. This exhibited superior piezoelectric properties.