Effect of VC and C Addition on Mechanical Properties and Microstructures of WC-Co Hardmetals Processed in Nitrogen-Based Atmosphere

The wc-co, wc-co-vc and wc-co-c samples are fabricated using powder metallurgy technique. the mixed powder is compacted under the pressure of 625 mpa, cold-isostatic pressed at 200 mpa and sintered at temperature in the range of 1350 – 1450°c nitrogen-based atmosphere. the mechanical properties of the samples are analyzed using vicker’s microhardness tester, universal tensile machine and scanning electron microscope. test results reveal that wc-co-c sample has better mechanical properties as compared to wc-co and wc-co-vc due to the formation of homogeneous and dense structure.