Home ﹥ Hot News > Corporate Patents > Patent Title: Wide-Temperature-Range Piezoelectric Ceramic Material, Sensor, and Its Preparation Method and Applications (CN202410443393.7)
Description:
This invention belongs to the field of piezoelectric material technology and discloses a piezoelectric ceramic material with a wide temperature adaptability range, along with its corresponding sensor, preparation method, and application. The ceramic material is composed of lead tetroxide (Pb₃O₄), barium carbonate (BaCO₃), niobium pentoxide (Nb₂O₅), antimony trioxide (Sb₂O₃), zirconium dioxide (ZrO₂), and titanium dioxide (TiO₂).
The chemical formula of the piezoelectric ceramic is:
(PbxBa₁₋ₓ)₀.₉₆(Zr₀.₄₂Ti₀.₅₈)O₃ – (PbxBa₁₋ₓ)₀.₀₄(Sb₀.₅Nb₀.₅)O₃, where x = 0.88–0.96.
By precisely adjusting the molar ratios of these components, the resulting ceramic exhibits both a high piezoelectric coefficient and excellent stability across a broad temperature range. It delivers highly accurate measurement performance and is particularly well-suited for use in sensors for ultrasonic gas meters.