Home/Sitemap  ·    Search   ·   you are here: Forum =>letter 33809 How to do antimony coating +++++ We are involved with pH Testing and are having difficulty with a coating needed on one of our electrodes. We need to have a very hard and substantial coating of Antimony coated onto an electrode.The substrate is of nickel/copper with a very thin layer of gold plating for conductivity. We have tried vacuum depositing and Sputtering the Antimony on and in both case it is not adequate. The Antimony flakes off of the surface or appears to be soft. Harry Simmons pH Testing - Blairsville, Georgia, USA +++++ The book "Electroplating" by F. Lowenheim . page 354 has a formula for electroplating of Antimony. Note that antimony is highly toxic, brittle and hard. Others have used SbF3 in fluoboric acid. gold can be activated for plating using potassium cyanide. Don Baudrand Don Baudrand, Consultant   Poulsbo, Washington +++++ You can find formulas for antimony plating even in 19th century electroplating handbooks (Langbein's for example)! Boil 4,4 ozs potassium carbonate 2,11 antimony sulphide water 1 quart 95 C,antimony anodes(or platinum) -- According to Langbein's Handbook (1920) Goran Budija - Zagreb, Croatia Answer or follow-up on this subject (in non-commercial fashion).   Post a new question or inquiry on a different subject.