Dyeing of copper and its alloys dark blue. Boil items in a solution containing 125 g sodium thiosulfate i 40 g lead acetate w 1000 cm3 …
Tag Archives: copper
Patination of copper and its alloys
Patination of copper and its alloys. The easiest, but requiring quite a long time, the method consists in placing objects wetted with acetic acid in an atmosphere of carbon dioxide and water vapor.
Na dno wanienki lub …
Coloring of copper and its alloys
Coloring of copper and its alloys. On copper and its alloys, a bluish-green bloom imitating a "patina" is most often produced, formed after a long time under the influence of weather conditions. Dość trwałe efekty można …
Manufacturing of printed circuits
Manufacturing of printed circuits.
In the absence of a ready-made plate covered with a copper foil, it can be prepared by sticking the copper foil to the plastic plate, it does not soften at elevated temperatures. W tym …
Electrolytic copper plating.
Electrolytic copper plating. The electrolyte used is a solution containing 200 g of crystalline copper sulfate i 25 cm3 of concentrated sulfuric acid in 1000 cm3 of water. The anode is a thick sheet of pure copper. …