Abstract
Cement-based piezoelectric composites with 0–3 connectivity pattern were fabricated from lead lithium niobate-lead zirconate-lead titanate (PLN) and sulphoaluminate cement. The influences of PLN particle size on the electromechanical coupling and piezoelectric properties of composites were discussed in detail. The results show that under the conditions of the same PLN content and fabrication technique, the piezoelectric strain factor d 33 and piezoelectric voltage factor g 33 increase with increasing the PLN particle size. When the PLN particle size is larger than 100 μ m, d33 and g 33 are hardly influenced by the PLN particle size. Electromechanical coupling coefficient K p and K t are shown to be independent of the PLN particle size, while mechanical quality factor Q m decreases with increasing the PLN particle size.
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