Piezoactuator for use in fuel-injector to adjust e.g. control valve, has electrode firmly connected with piezobody using sintered paste or by adhesive, soldering or welding material and designed as open porous sintered mold

摘要

The piezoactuator (7) has an electrode (9) firmly connected with a piezobody (10) using a sintered paste (11) or directly using adhesive material (15), soldering material (13) or welding material. The electrode is designed as an open porous sintered mold (8). The sintered mold is formed from silver metal flakes and provided with constant open porosity. The sintered mold forms a gas admission channel through which the gas flows away from a join patch and/or towards the join patch. The gas is supplied perpendicular to a stack direction (S) from the admission channel. An independent claim is also included for a method for producing a piezoactuator.