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Due to the large mean free paths of the binder phases in extra coarse and super extra coarse cemented carbides, it is necessary to strengthen the binder phase to obtain a well-matched performance of the binder phase and the WC hard phase. A nanoindentation tester, a high-resolution analytical electron microscope and an X-ray diffractometer were used in the study of the Co-based binder phase (the Co)...
The notch quench method was used to study the influence of pH values on thermal fatigue crack propagation behavior of WC–8Co cemented carbide. The pH values of the aqueous solutions were varied between 5.2, 7.4 and 8.8. The results show that the corrosive environment has a strong influence on the thermal fatigue crack propagation behavior of the materials for testing. Acidic and alkali environment...
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