INVESTIGATION ON Fe-Cu BASED FRICTIONAL MATERIAL FOR HEAVY-LOAD MACHINERY BRAKING

The producing processes of Fe-Cu based powder metallurgy frictional material used for heavy-load machinery braking were presented. The matrix of the frictional material, the effect of the frictional components and the functional mechanism of Mo₂O₃ added were also investigated. The results show that the frictional coefficient increases with the increase in the total amount of Sic and SiO₂(amount of SiC is the equal of SiO₂);the wear rate of the material decreases and then increases,and holds a minimum value. Mo₂O₃ added not only increases the frictional coefficient to some extent,but also decreases remarkably the wear rate of the material. A Fe-Cu based frictional material used for heavy-load machinery braking which has excellent frictional wear behaviour and low cost was developed.