Abstract
Diamond powders of different types and particle size distribution were shock consolidated using a plate impact shock recovery system at 1.6 to 2.2 km/s. Single‐piece diamond compacts (approximately 12 mm diameter and 2–4 mm thickness) with relative densities in the range of 88–94% of Theoretical Maximum Density (TMD) and less than 5% non‐diamond phase, were produced. While the effects of several different variables, e.g., powder pre‐treatment, particle size and distribution, and impact conditions, were explored, it was established that the initial green‐powder‐compact density was the most important variable controlling the densification of diamond powders. In this paper, we will present results of some of the consolidation experiments and the role of initial green density in controlling the final compact density and microstructure.
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