Electrochemical Machining of cemented carbides

摘要: Abstract The present work is focused on the electrochemical behavior of tungsten carbide cobalt in alkaline ammonia electrolytes under near-ECM conditions. Potentiodynamic measurements were carried out an electrolyte mixture sodium nitrate and ammonia. It could be shown that a homogenous dissolution both phases, hard phase binder cobalt, possible with this mixture. Additionally, galvanostatic pulse experiments coupled polarographic analysis waste to investigate current efficiency machining process. Current efficiencies between 70 100% can achieved chosen conditions dependent density.