硅酸盐学报

为了使结构陶瓷能够在汽车发动机的某些摩擦副中得到应用,对Sialon(Si_3N₄基陶瓷)及SiC结构陶瓷对钢的摩擦副的摩擦磨损性能进行了研究。还作了钢对钢及冷激铸铁对钢的摩擦磨损性能的对比试验。结果表明:Sialon及SiC陶瓷对钢的摩擦系数比钢对钢及冷激铸铁对钢的摩擦系数小。在抗磨损性能方面,Sialon及SiC陶瓷试块即使在试验载荷比钢及冷激铸铁试块大的情况下,不但陶瓷试块的磨损量比金属试块的磨损量要小得多,而且与陶瓷试块相匹配的钢环的磨损量也比与金属试块相匹配的钢环的磨损量要小。用上述结构陶瓷材料制成汽车发动机中的某些零件以代替金属零件,不仅陶瓷零件本身耐磨性好,而且与陶瓷零件匹配的金属零件的磨损也会减小。

In order that structural ceramics can be used in some friction pairs in automobile engine, the friction and wear behavior of the friction pairs of sialon and SiC Ceramics. against steel has been studied. Friction and wear behavior tests of chilled cast iron (CCI) and GCr15 steel against metal pairs have also been conducted for comparison. The test results show that the friction coefficients of sialon and SiC ceramics against steel are less than those of steel against steel and CCI against steel. As for wear resistance even if the test load applied to the sialon and SiC ceramic block specimens is higher than that to the steel and CCI block specimens, not only the wear of the ceramic block specimens is much less than the metal, but also the wear of the steel ring specimens, which corresponds to that of the ceramic blocks, is less than that of steel ring, which corresponds to that of the metal blocks. Using the structural ceramic material mentioned above to manufacture some parts for automobile engine instead of metal parts, the wear resistance of both the ceramic elements and the metal parts matched with ceramics, will be increased.