On particle interactions with target materials of different mechanical properties in a long specimen Coriolis slurry erosion tester

The Coriolis tester, and especially its long specimen version, simulates well the slurry flow conditions in pumps, cyclones, pipes, etc. and provides a slurry erosion test mode that is closest to having well-defined particle-target impingement conditions. The predominance of glancing angle slurry impingement ensures that only a fraction of erodent particles has a normal component of impact velocity sufficient to cause plastic deformation, and this provides great sensitivity in discriminating between the erosion resistance of different target materials. The present paper demonstrates that this fraction is strongly influenced by target material mechanical properties. Experimental results and theoretical calculations of erodent particle interactions on soft 1018 steel and hard sintered WC10Ni specimens show that wear along the full specimen length is due mainly to impact between the erodent and target surface.