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Carrier membrane for piezoelectric transducer - having thermal expansion coefft near that of the piezoelectric material
Carrier membrane for piezoelectric transducer - having thermal expansion coefft near that of the piezoelectric material
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机译:压电换能器的载体膜-热膨胀系数接近压电材料的热膨胀系数
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摘要
Curving at elevated temps of a membrane carrying on one side a layer of a piezoelectric material is prevented by selecting the membrane material in such a manner that it shows a thermal expansion coefft. near that of the piezoelectric material. Prefd. membranes are 300 mu Al foil coated on both sides with 50 mu - thick hard eloxal layers (Al2O3); 260 mu thick Ti alloy foil (T2-Al-Mo-V); Vacodil membrane (RTM) N2-Fe alloy) and 200 mu thick mica plate.
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