Title: Na.K.Bi-titanate serie piezo-electric ceramics for ultrasonic transducer
Application Number: 85100426 Application Date: 1985.04.01
Publication Number: 1002278 Publication Date: 1986.08.13
Approval Pub. Date: Granted Pub. Date: 1988.03.16
International Classifi-cation: C04B35/46,H01L41/16
Applicant(s) Name: Shanghai Research Inst., of Silicates, Chinese Aca Address:
Inventor(s) Name: Lu Yongkang, Wang Liee
Attorney & Agent: PAN ZHEN NIE SHUYI
Abstract:
     The composition of this stuff is XNa0.5, Bi0.5, TiO3-(1-X) K0.5,Bi0,5 TiO3, in that X=0.8~0.99, and a small amount of upgrading additive is added. The additive is 0.1-3% (wt.) MnO2.Fe2O2 or Pb(BO2)2H2O, or a combination of any two of the above-mentioned compounds. Preferable composition is X=0.85-0.93 and a small amount of additive. This stuff has high Kt. Nt and great Kt/Kp values and comparatively low Kp value, especially suitable for ultrasonic transducer manufacture.
Time: 24