不同颗粒粒度表面复合材料的耐冲蚀磨损性能  

Erosive Resistance of WC/Cast Iron Matrix Surface Composites with Different Particle Size

作　　者：蒋业华[1] 周荣[1] 邢建东[2] 卢德宏[1] 

机构地区：[1]昆明理工大学机电学院,云南昆明650093 [2]西安交通大学材料学院,陕西西安710049

出　　处：《铸造》2003年第9期664-667,共4页Foundry

基　　金：云南省应用基金(2002E0007Q)。

摘　　要：采用负压铸渗工艺制备了WC/铁基表面复合材料,研究了不同颗粒粒度的复合材料的抗冲蚀磨损性能,并分析了磨损机理。结果表明,铸渗法制备的WC/铁基表面复合材料具有良好的抗冲蚀磨损性能,当颗粒粒度为40～60目,体积分数为30%时,其抗冲蚀磨损性能是高铬铸铁(Cr15Mo3)的3 2倍。当颗粒粒度适当(40～60目)时,颗粒对基体的"钉扎"作用强,不易脱落,颗粒间隙小,能有效保护基体,复合材料的抗冲蚀磨损性能较好。A ferrous matrix surface composite material reinforced by WC(p) was prepared by a vacuum melt infiltration process. The erosive resistance of the composite materials with different particle sizes was measured and analyzed.It was found that the erosive resistance of the tested materials was 22 times higher than that of Cr15Mo3 white cast iron when the reinforced WC particles were 40～60 mesh in size and 30% in vol. Similarly, the WC particles with sizes ranging from 40 to 60 mesh were not liable to detach and peel off from the matrix in the presence of the abrasive particles, thus the corresponding composites showed better erosionwear resistance in this case as well.

关 键 词：颗粒粒度 铁基表面复合材料 冲蚀磨损 

分 类 号：TB33[一般工业技术—材料科学与工程]