不同磨料粒度下WC体积分数对铁基表面复合材料磨损性能的影响

用负压铸渗工艺制备了WC/HT300基表面复合材料,研究了WC体积分数和冲蚀磨损浆料中的颗粒粒度对复合材料的抗冲蚀磨损性能的影响。对于同一种WC颗粒体积分数的复合材料,当浆料中的石英砂粒度大时,复合材料的体积磨损率较大,抗冲蚀磨损性能降低。WC体积分数为27%和36%的表面复合材料具有比其他WC体积分数复合材料优越的耐磨损性能;在磨料粒度为40~70目的工况下,WC体积分数为36%的复合材料,具有比体积分数为27%的复合材料优越的耐磨性能;但在磨料粒度增大到20~40目时,WC体积分数为27%的复合材料,具有比WC体积分数为36%的复合材料优越的耐磨损性能。

Effect of Volume Fraction of WC Particle on Erosive Resistance of WC/Iron Matrix Surface Composites on the Different Slurry Particles Size

A cast iron matrix surface composites reinforced by WC(p)were prepared by a vacuum melt infiltration process. Author focuses on investigating the relationship between its erosive resistance and WC particle volume fraction on the different slurry particles size. The results showed that the wear loss will increase with the increase of the size of slurry particles for the WC particles reinforced iron matrix composite. When the surface composites were tested by the 20 to 40 mesh slurry particles, the erosive resistance of the composites which the WC particle volume fraction was 27% was better than that of the composites which the WC particle volume fraction was 36%. But when the surface composites were tested by the slurry of 40 to 70 mesh particles, the erosive resistance of the composites which the WC particle volume fraction was 36% was better than that of the composites which the WC particle volume fraction was 27%.