Adhesion promoter for piezoceramic hydrophone

摘要

The invention relates to a piezoceramic hydrophone at least comprising the following elements: a first spherical half-shell (1) and a second spherical half-shell (2) which are combined to form a hollow sphere (3); the first spherical half-shell (1) and the second spherical half-shell (2) comprise a radially polarized, piezoelectric material (9) and the first spherical half-shell (1) and the second spherical half-shell (2) have an outer layer (4) and the outer layer (4) has silver and / or silicon compounds; - an electrical contact (5) the first spherical half-shell (1) and the second spherical half-shell (2); and- a polymer sheath (6) of the hollow sphere (3); characterized in that the outer layer (4) is connected to the polymer sheath (6) via an adhesion promoter (7) and the adhesion promoter (7) is a compound of the formula (M) [(M) F] with M = H, NH, Li, Na, K, Rb, Cs and M = Ti, Zr.