Table 1: Test parameters.

ErodentSilica sand

Erodent size (μm)125–300
Erodent shapeIrregular, square pyramidal
Impingement angle (α, °)15, 30, 60, 90
Impact velocity (m/s)30 ± 4, 52 ± 4, 60 ± 4, 88 ± 4
Erodent feed rate (g/min)4.7 ± 0.3
Test temperatureRT
Nozzle to sample distance (mm)10
Nozzle diameter (mm)4