METHOD FOR TREATING NIOBIUM SURFACES USED IN AC CIRCUIT APPLICATIONS

摘要

An improved method of treating niobium surfaces which are used in AC circuit applications such as high frequency resonators in which a niobium pentoxide layer is first produced on the niobium surface using an electrolyte free of fluoric acid and which does not attack the niobium pentoxide, after which the layer is removed to result in a finished product which exhibits extremely good electrical properties particularly when used in superconductor AC applications.