The
friction and wear tests for mated couples of silicon nitride(Si_3N_4)and
chilled cast iron under the
oil-less lubrication were carried out by means of block-on-disc with MG-200 wear machine from room temperature to 150℃,the friction coefficients of mated couples and wear rates of Si_3N_4 were gained,and the friction and wear behaviors were analyzed by the wear rates,friction coefficients,SEM images and percentages of chemical elements on worn surfaces.The results showed that the
wear rate of Si_3N_4 and
friction coefficient between Si_3N_4 and
Chilled cast iron with oil-less lubrication are much less than those with dry friction condition;the wear rate of Si_3N_4 increases with the increase of load and temperature,and the effect of sliding speed on wear rate of Si_3N_4 is not as significant as the effect of load;the friction coefficient between Si_3N_4 and chilled cast iron decreases with sliding speed,but increases with temperature,and the load has little effect on friction coefficient;the wear of Si_3N_4 is caused by interaction of chemical wear,abradant wear and particles' peeling off,and chemical wear is origin in other two.
More abstracts about the Tribological Characteristics of Silicon Nitride-chilled Cast Iron with Oil-less Lubrication