Cemented carbides are extensively utilized in cutting, drilling, and wear-resistant applications owing to their outstanding mechanical properties. However, their exposure to aggressive environments — makes them prone to corrosion, compromising their structural integrity and functional performance. This review provides a comprehensive analysis of the electrochemical corrosion behaviour of cemented carbides, detailing fundamental mechanisms and forms of corrosion, including uniform and localized attack. The influence of key factors such as microstructure, binder chemistry, and environmental conditions on corrosion susceptibility is systematically examined based on recent experimental and analytical studies. Strategies for enhancing corrosion resistance — including binder modification, micro-alloying, optimized processing, and advanced surface engineering — are critically assessed. Advances in characterization techniques are also highlighted, with an emphasis on in-situ and operando electrochemical methods coupled with microstructural analysis, which enable multi-scale resolution of corrosion processes. Finally, this review outlines current knowledge gaps and suggests future research directions, such as the design of novel binder systems and the integration of multi-scale modelling with experimental validation, to guide the development of next-generation corrosion-resistant cemented carbides.
Zhou et al. (Sun,) studied this question.
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