Electrochemical Machining of cemented carbides
Electrochemical Machining of cemented carbides
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DOI：
10.1016/j.ijrmhm.2014.06.010
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发表时间：
2014-11-01
影响因子：
3.6
通讯作者：
Michaelis, A.
中科院分区：
文献类型：
--
作者：
Schubert, N.;Schneider, M.;Michaelis, A.
研究了碳化钨钴在碱性氨电解液中近电解条件下的电化学行为。在硝酸钠和氨水的电解质混合物中进行动电位测量。可以表明，使用这种电解质混合物，两个相（硬质相碳化钨和粘结相钴）的均匀溶解是可能的。此外，恒电流脉冲实验加上极谱分析的废电解液进行了调查的电流效率的加工过程。根据电流密度（C）的不同，在选定的条件下可以实现70 - 100%的电流效率。2014 Elsevier Ltd.保留所有权利。
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 in an electrolyte mixture of sodium nitrate and ammonia. It could be shown that a homogenous dissolution of both phases, the hard phase tungsten carbide and the binder phase cobalt, is possible with this electrolyte mixture. Additionally, galvanostatic pulse experiments coupled with polarographic analysis of the waste electrolyte were carried out to investigate the current efficiency of the machining process. Current efficiencies between 70 and 100% can be achieved under the chosen conditions dependent on the current density (C) 2014 Elsevier Ltd. All rights reserved.