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Preparation of Metallic Articles to
B The AfterTreatment
10 other sections not shown
According acetic acid added addition adhere admixture alkali aluminum ammonia ammonium chloride ammonium sulfate amp/dm2 anodes antimony arsenic becomes bichromate black coloring blue boiling brass bronze brown color brushed burnishing cadmium carbonate cathode caustic soda chemical chlorate stain chromate coat color tone coloring copper coloring process compounds concentrated containing copper alloys copper and copper copper nitrate copper salts copper sulfate corrosion cuprous dark degreasing dissolved dull electrolytic ferric formed galvanic German patent gold gray grease green greenish Groschuff heated hydrogen hydroxide immersed iron chloride iron sulfate lacquer liter water liver of sulfur manganese metal coloring minutes molybdate muriatic acid nitric acid obtained oxide layer patina phosphate pickling polishing potassium chlorate potassium cyanide potassium permanganate potassium sulfide precipitate produced protective recommended rinsed rubbed rust silver sodium chloride sodium thiosulfate solu sulfide sulfuric acid surface temperature thin thiosulfate tion Tombak varnish verdigris yellowish zinc