Solid Particle Erosion Behavior of NiCr-Al2O3-ZrO2 (8Y) Ceramic Composites
In this paper,8YSZ ceramics reinforced by NiCr alloy and Al2O3 particles were pressureless sintered at an optimized sintering condition.The facture toughness reached a maximum value of 4.6 MPa·m1/2 when the addition of NiCr alloy is 12 vol.%,which was much higher than that of the pure 8YSZ ceramic (2.0 MPa·m1/2) fabricated in the same condition.Solid particle erosion wear behavior of NiCr-Al2O3-ZrO2 (8Y) ceramics composites was performed by self-designed sand blasting type solid particle erosion wear equipment,using 36# SiC particles as abrasive particles with the 90′ erosion angle.The effect of the volume addition of NiCr alloy on the erosion wear of NiCr-Al2O3-ZrO2 (8Y) ceramic composites at room temperature was investigated.The results show that the volume erosion rate of the ceramic composites decreased as the volume addition of the NiCr alloy increasing.Crossing cracks,plastic deformation and minor chipping are the major erosion mechanisms.
8YSZ ceramics NiCr alloy fracture toughness erosion wear
Liu Fengjiao Fang Minghao Liu Yan-gai Huang Zhaohui
School of Materials Science and Technology,China University of Geosciences(Beijing),Beijing 100083,P School of Materials Science and Technology,China University of Geosciences(Beijing),Beijing 100083,P
国际会议
The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))
厦门
英文
451-454
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）