Piezoceramic composition, useful to prepare a piezoceramic component e.g. piezoceramic bending transducer, comprises lead-rare earth metal-alkaline earth metal-alkali metal-zirconium-titanium-iron-niobium-metal-tungsten-oxide compound

摘要

Piezoceramic composition comprises lead-rare earth metal-alkaline earth metal-alkali metal-zirconium-titanium-iron-niobium-metal-tungsten-oxide compound. Piezoceramic composition comprises lead-rare earth metal-alkaline earth metal-alkali metal-zirconium-titanium-iron-niobium-metal-tungsten-oxide compound of formula (Pb 1 - aRE bAE cAL d[Zr x-Ti y(Fe rNb n) k(M mW w) z]O 3). RE : rare earth metal; AE : alkaline earth metal; AL : alkali metal; Nb : niobium; Fe : iron; W : tungsten; M : at least one metal consisting of Co, Fe, Cu, Mg, Mn, Mo, Ni, scandium, Zn or rare earth metal, which has a inner radius of less than 0.9 nm, additional doping metal with a doping metal portion of m-z; a : less than 1; b : 0-4; c, d : 0-0.5; n : 0-1; f : 1-n; w : 0-1; m : 1-w; and x-z, k : greater than 0, where x+y+z+k is 1. An independent claim is included for preparing a piezoceramic component (1) with a piezoceramic material using the piezoceramic composition comprising: (a) providing a green body with the piezoceramic composition and (b) tempering the green body, where the piezoceramic components are generated from the piezoceramic composition.