Displaying items by tag: plating

Plating on titanium has long been considered extremely difficult. For successful plating on titanium, the chosen process must ensure to complete removal of the native oxide before proceeding for plating. Processes of electroless nickel, gold plating, and blackening of electroless nickel on titanium alloys are discussed in the article.

Nickel and cobalt are silver-white elements. Nickel has been widely used in coins, manufacturing of certain alloys that retain a high silvery polish, such as German silver. Nickel is slowly oxidized by air at room temperature and is considered corrosion-resistant. Historically, it has been used for plating iron, copper, bronze, and brass etc. About 9 % of world nickel production is still used for corrosion-resistant nickel plating. Nickel-plated objects sometimes provoke nickel allergy.

Chromium is a steely-gray, lustrous, hard metal that takes a high polish and has a high melting point. While chromium metal and Cr(III) ions are not considered toxic, hexavalent chromium, Cr(VI), is both toxic and carcinogenic. 85 % of the available chromium is used in metal alloys. The remainder is used in the chemical, refractory, and foundry industries. Chromium compounds are used in leather products, dyes, paints, cement, mortar and are anti-corrosives. Chromium salts (chromates) are allergic to some people. Chrome ulcers are often found in workers that have been exposed to strong chromate solutions in electroplating, tanning and chrome-producing manufacturers [1, 2]

Nachdem die ZVO-Oberflächentage 2020 coronabedingt abgesagt werden mussten, macht der Jahreskongress am 23. und 24. September 2021 wieder in Berlin halt, erstmals als Hybrid-Veranstaltung mit einem entsprechend angepassten Programm.