Experimental Study on Tungsten Leaching from Cemented Carbide
Some rust-inhibiting additives which are wildly used in water-based metalworking fluids were mixed in several lubricants which made by oleic acid, boric acid, triethanolamine and so on to prepare the experiment used solutions in a certain concentration. The phenomenon of the metal tungsten leaching from cemented carbide in these additives was examined by immersion test and electrochemical measurement experiment. According to the value of electromotive force and the results of scanning electron microscopy (SEM) analysis, the condition of the metal tungsten leaching from cemented carbide in solutions with different additives was judged. The results show that the order in ascending of the effects of these solutions on the metal tungsten leaching from cemented carbide is sodium phosphate, sodium carbonate, triethanolamine, oleate triethanolamine ester, boric acid-oleic acid triethanolamine ester, sodium molybdate, benzotriazole and sodium nitrite.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
X. M. Jia et al., "Experimental Study on Tungsten Leaching from Cemented Carbide", Advanced Materials Research, Vols. 189-193, pp. 494-497, 2011