| 摘要 |
manufacture of piezoids for power equipment. SUBSTANCE: piezoceramic material has lead, zirconium, titanium, strontium, niobium, zinc, manganese, and lanthanum oxides in its composition, their proportion is as follows, mas. %: PbO, 66.00- 66.60; ZrO2, 19.30-19.70; TiO, 11.10-11.40; SrO, 1.45-1.65; Nb2O5, 0.87- 1.00; ZnO, 0.23-0.27; MnO, 0.13-0.15; La2O3, 0.30-0.50. Material possesses medium elastance and its tgdelta complies with best values specified for this class of compounds (0.30-0.50%); its Kp is 0.67-0.68 , is very high d31 ((200-235).10-12 Kl/N), Qm = 200-300. EFFECT: improved quality of material. 2 tbl
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