Spark plug housing with galvanic nickel and zinc-containing protective layer and a silicon-containing sealing layer, as well as a spark plug with this housing and manufacturing process for this housing

摘要

Housing (2) for a spark plug (1) with a bore along the longitudinal axis X of the housing (2), whereby the housing (2) has an outside (205) and an inside (204), and wherein on at least part of the outside (205) of the housing (2) an electroplated nickel and zinc-containing protective layer (210) is arranged and a sealing layer (220) is arranged on the nickel- and zinc-containing protective layer (210), the sealing layer (220) Contains silicon.