An injection valve for injecting fuel comprises a valve housing inside of which a drive unit controls the movement of a valve needle that is pretensioned by a spring. The electrode base materials are an alloy containing a chief element selected from the group consisting of Ni, Fe, and Co and a plurality of additive elements. In other embodiments, other relative speeds of the guiding and feeding conveyors are employed. The foaming method comprises adding a chemical blowing agent or injecting gas into the liquid foam to uniformly distribute the gas in the liquid foam. A condensation of fluid on the condensation element is enhanced through various elements.