Abstract
Lead titanate powders prepared by three different methods (mixed-oxide, sol-gel and coprecipitation) were synthesized as filters for 0-3 composite transducers. As starting materials, Pb(C//2H//3O//2)//2- 3H//2O and Ti(OC//3H//7)//4 were used in the sol-gel method, Pb(NO//3)//2 and TiCl//4 for the co-precipitation technique. The PbTiO//3 powder prepared by the coprecipitation method yielded more uniformly shaped powder than the powder prepared by the sol-gel or mixed-oxide method. 0-3 composites were prepared with these powders using Eccogel polymer. X-ray diffraction patterns of the PbTiO//3-polymer composites prepared by the coprecipitation method before and after poling indicated that the composites were fully poled. The hydrostatic piezoelectric voltage and charge coefficient g//h and d//h were about 97 (10** minus **3 V-m/N) and 43 (pC/N), respectively. The hydrophone figure of merit d//hg//h was over 4000 (10** minus **1**5 m**2/N). These composites showed no significant aging effect.
| Original language | American English |
|---|---|
| Pages | 318-322 |
| Number of pages | 5 |
| State | Published - 1986 |
ASJC Scopus subject areas
- General Engineering