中文摘要：

以冲蚀磨损工况典型应用材料Cr15M03高铬铸铁为对比材料，研究了不同磨粒硬度、不同磨粒粒径、不同冲蚀角度（0°、30°、45°、60°和90°）对α-Al2O3结构陶瓷抗冲蚀磨损性能的影响，分析了试验材料冲蚀磨损微观失效机制。结果表明：Cr15M03高铬铸铁冲蚀磨损体积均大于α-Al2O3陶瓷材料：随着Cr15Mo3高铬铸铁冲蚀磨损体积增加幅度最大：处于45°和60°，90°冲蚀角度时试验材料的冲蚀磨损体积损失最大：α-Al2O3陶瓷受冲蚀时切削磨损小，随着冲蚀角度增加，材料的耗能方式主要径向裂纹和横向裂纹的断裂表面能。

英文摘要：

Erosion wear regulation with different erosion wear particle＇s hardness and diameter under different erosion angel （0°、 30°、 45°、60°and 90°） for a-A1203 structure ceramics have been systematically studied by liquid-solid dual phase erosion wear test machine with rotation disk through comparing with Crl 5Mo3 high chromium cast iron for pumps in industry, and the micro failure mechanism have been analyzed for the experimental materials. The experimental results have been concluded as following： （1） The anti erosion wear property for α-Al2O3 ceramics is better than that of Crl 5Mo3 high chromium cast iron with same erosion wear particle＇s hardness and diameter under same erosion angel. （2） The erosion wear lost volume for the experimental materials are increases as the particle hardness or diameter increase with biggest lose for Cr 15Mo3 high chromium cast iron. （3） The effect of erosion angel on the erosion wear volume lose features as N-shaped curve with the biggest volume lose at 45° erosion angle while biggest erosion wear volume at 90° angle, which indicates that it should avoid 45° or 90° erosion angle during materials designing. （4） The failure form of materials surface is cutting wear to cutting wear and impact fatigue and to impact fatigue for Crl5Mo3 high chromium cast iron when the erosion angle increasing, but the failure form of a-A1203 ceramics mainly is crack increasing