Solid Particle Erosion Behavior of 3YSZ Ceramics at Elevated Temperatures
Solid particle erosion wear behavior of 3YSZ ceramics were performed by self-designed sand blasting type high-temperature solid particle erosion wear equipment, using 36# corundum as abrasive particles. 3YSZ ceramics were pressureless sintered in air atmosphere at 1500°C for 3h. The fracture toughness and Vickers hardness could achieve 10.3 MPa•m1/2 and 12.8 GPa, respectively. The effect of temperature (25°C, 400°C, 600°C, 800°C, 1000°C) and the total weight of the abrasive particles (300g, 900g, 1800g) at room temperature on the erosion wear of 3YSZ ceramic were investigated. The volume erosion rate raised and developed a nonlinear dependence on the weight of corundum abrasive particles at room temperature. The slope of the curve decreased gradually. At elevated temperature, volume erosion rate increased as the temperature went up. Nonlinear fitting presents the relationship between the volume erosion rate of 3YSZ ceramics and the corresponding temperature. Plastic deformation is the major erosion mechanism at room temperature when the weight of corundum particles was 300g and 900g. Minor chipping instead of it when the temperature grew up to 400 and 600°C or the corundum particles was as much as 1800g at 25°C. When 3YSZ targets were eroded at 800°C and 1000°C, the material removal are mainly attributed to lateral cracks for an ideally brittle material. Crack propagation is the controlling factor of volume erosion rate.
Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong
F. J. Liu et al., "Solid Particle Erosion Behavior of 3YSZ Ceramics at Elevated Temperatures", Key Engineering Materials, Vol. 492, pp. 85-88, 2012