Piezoelektrische Keramik

摘要

1345929 Piezoelectric ceramics MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 11 Oct 1971 [14 Oct 1970] 47187/71 Heading C1J A ceramic composition consists of a solid solution u PbO-v MnO 2 -w Nb 2 Os-x Li 2 O-y TiO 2 -z ZvO 2 wherein, in molar per cent, u = 55- 50À1; v = 9À3-0À2; w = 7À3-0À2; x = 3À8-0À1; y = 24À8-14À8; z = 26À8-14À8, but excluding compositions of mol ratio Li 2 O/Nb 2 O 5 at 1 to 3.