Influence of LaMgAl₁₁O₁₉ On Solid Particle Impact Erosion Wear Behavior of 3YSZ Ceramic at Elevated Temperatures

Abstract

To study the improvement in solid particle impact erosion wear resistances of 3 mol% yttria‐stabilized zirconia (3YSZ) ceramic at elevated temperatures up to 1400°C, 2 wt% LaMgA111O19 was added into 3YSZ to prepare LaMgA111O19‐3YSZ ceramic for erosion resistance tests with angular corundum abrasive particles. The testing results show that the volume erosion rates of 3YSZ and LaMgA111O19‐3YSZ ceramic were similar in the temperature range from room temperature to 600°C, then exhibited a sharp increase from 600°C to 1200°C, and dropped again at 1400°C. It was mainly caused by the change in material removal mechanisms from plastic deformation below 600°C to the interaction of transverse cracks in the temperature range from 600°C to 1400°C. The solid particle impact erosion wear properties of 3YSZ ceramic in the temperature range from 600°C to 1400°C were successfully improved by the addition 2 wt% LaMgA111O19 platelets. Comparing with the volume erosion rate of pure 3YSZ ceramic (0.687 mm3/g) at 1200°C, the value of LaMgA111O19‐3YSZ ceramic (0.551 mm3/g) has been decreased by 20%.

Effect of micro blasting process parameters on 3D surface topography and surface properties of zirconia (Y‐TZP) ceramics

“…The surface morphologies of the samples were mainly affected by plastic deformation, microcracks, and micro‐cutting mechanisms, which occurred by the repeated impacts of sharp‐edged alumina particles (Figure 9). 40,41 …”