ADHESION PROMOTER FOR PIEZOCERAMIC HYDROPHONE

摘要

The invention relates to a piezoceramic hydrophone at least comprising the following elements: a first hemispherical shell (1) and a second hemispherical shell (2) which have been assembled to form a hollow sphere (3); wherein the first hemispherical shell (1) and the second hemispherical shell (2) comprise a radially polarised, piezoelectric material (9) and the first hemispherical shell (1) and the second hemispherical shell (2) have an external layer (4) and the external layer (4) contains silver and/or silicon compounds; an electrical contact connection (5) of the first hemispherical shell (1) and the second hemispherical shell (2); and a polymeric coating (6) of the hollow sphere (3); characterised in that the external layer (4) is connected via an adhesion promotor (7) to the polymeric coating (6) and wherein the adhesion promoter (7) comprises a compound of formula (M1)2[(M2)F6] where M1 = H, NH4, Li, Na, K, Rb, Cs and M2 = Ti, Zr.