Before revision: Metallfaerbung,Berlin 1937.,p.32-37 Coatings formed on the anode Nobili rings, Lismann green for copper and alloys, anodic oxidation of aluminum, magnesium, titanium, niobium, tantalum, carbon steel and stainless steel, silver, copper and its alloys, tin, chromium and zinc.Krause,H.
After revision: tungsten,Metallfaerbung,Berlin 1937.,p.32-37 Coatings formed on the anode Nobili rings, Lismann green for copper and alloys, anodic oxidation of aluminum, magnesium, titanium, niobium, tantalum, carbon steel and stainless steel, silver, copper and its alloys, tin, chromium and zinc.Krause,H.