Patent ID: 8530791

Claim:
A method to provide a corrosion resisting joining area between copper and stainless steel or titanium, which are the constituents of permanent cathodes for electrolytic process wherein it comprises the following steps: having a copper material and a stainless steel or titanium material available at a preset distance, leaving a separation between materials wherein the separation between the copper material and a stainless steel or titanium material to be welded has a range between 0.1 mm and 1 mm; welding the copper material and the stainless steel or titanium material with a voltaic arc, TIG, MIG or manual arc welding process using nickel electrodes as contributing welding between said copper material and stainless steel or titanium material; and getting a joining area made of a first zone of a copper-nickel (Cu—Ni) alloy, an intermediate corrosion resisting zone with a mostly nickel and a second zone made of a stainless steel-nickel alloy or titanium-nickel alloy.