Mechanical Properties and Solid Particle Erosion Behavior of LaMgAl₁₁O₁₉–Al₂O₃ Ceramic at Room and Elevated Temperatures

Abstract

In this work, the mechanical properties and solid particle erosion wear behavior of composites revealed that erosion temperatures and impingement angles play important roles in determining the erosion behavior and mechanisms of the tested materials. For the case of elevated temperature and oblique erosion, plowing and subsurface intergranular fracture are the predominant mechanisms resulting in material removal, whereas at room temperature and normal impact, the erosion process of the targets is primarily dominated by grain ejection and lateral crack intersection.

The volume erosion rate of the slip cast monolithic and composite ceramics

“…The mass of the ceramic samples before and after erosion test was measured on an analytical balance with a precision of 10 −5 g (Ohaus AP250D, Ohaus Europe GmbH, Zurich, Switzerland). The volume erosion rate is calculated using the mass loss approach [18,19]: where ω is the volume erosion rate (mm 3 ·g –1 ); ρ is the density of the ceramic sample (g·cm –3 ), m i and m f are the mass (g) of target material before and after the impact, respectively; m e is the mass of erodent particles (g). The total mass of the erodent used in one test was m e (SiO 2 ) = 2655 ± 0.10 g, and m e (SiC) = 2127 ± 0.10 g.…”

“…The mass of the ceramic samples before and after erosion test was measured on an analytical balance with a precision of 10 −5 g (Ohaus AP250D, Ohaus Europe GmbH, Zurich, Switzerland). The volume erosion rate is calculated using the mass loss approach [18,19]:…”