Spark plug electrode with nickel-rhodium coating, and method for Herstellungsunq and spark plug with such a spark plug electrode

摘要

Spark plug electrode comprising - an electrode core (8), comprising: • at least a first noble metal and • Rh in a proportion of 7 to 15 wt .-%, based on the total weight of the electrode core (8) and - an at least partially surface coating (7) a Ni content of 5 to less than 100% by weight, based on the total weight of the surface coating (7), wherein the surface coating (7) contains Rh in a proportion of less than 0.5% by weight, based on the total weight of the Surface coating (7) contains.