The elastic moduli and their pressure derivatives for tungsten carbide with different amounts of cobalt binder

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Abstract
The elastic moduli and their pressure derivatives for polycrystalline tungsten carbide containing different amounts of cobalt binder have been measured. No clear‐cut correlation between the values of the elastic moduli or their pressure derivatives and the cobalt content can be detected. From the measured data, an equation of state for the material is computed, and the various mode Grüneisen γ’s are evaluated. All the latter are in the range 1–2. The results are compared to the experimentally measured compression and Grüneisen constant.