0-3型压电复合材料的电晕放电极化

Polarization of 03 piezoelectric composite materials by coronadischarge

金属单针电晕放电极化０—３型压电复合材料的工艺条件是：电晕放电电压Ｖ＝８．５ｋＶ，极化温度Ｔ＝１３０℃，极化时间ｔ≥４０ｍｉｎ。利用旋转电晕放电对大面积０—３型压电复合材料进行极化。结果表明：这种极化方法可达到普通油浴高压直接极化的效果，而且可以对大面积压电复合材料进行极化。对于７０μｍ厚的大面积０—３型压电复合材料，极化后，其压电系数ｄ３３值达到３５ｐＣ／Ｎ。

The conditions for polarizing 03 Piezoelectric composite material with single needle coronadischarge are: corona voltage 85 kV, polarizing temperature 130℃, polarizing time not less than 40 min 03 piezoelectrics composite material is polarized with rotary coronadischarge over large area With this method, the result same as that of the traditional method—high voltage polarizing in oil can be achieved Of a large area polarized 03 piezoelectric composites material, the piezoelectric constant is 35 pC/N(2 refs)