焼結摩擦材の摩擦性質

概要

論文の詳細を見る
Frictional characteristics of sintered Cu-C, Cu-Sn-C and Cu-Sn-C-SiO2 alloys used for lining of clutch and brake have been researched. Rusults are obtained as follows. (1) As the porous sintered alloy has low modulus of elasticity, the surface contact is better than that of cast material. So it can be expected that the porous body has large coefficient of friction and good wear resistivity. (2) Cu-C alloy needs to contain more than 2% of C for good wear resistivity, and Cu-Sn-C alloy needs to have more than 5% of C. And when the hardness of sintered material or mate steel is high, more carbon needs for good frictional characteristics. (3) Cu-Sn-C alloy shows high friction compared with Cu-C alloy. (4) When SiO2 is added for friction material, the coefficient of friction gets to the high stable value more rapidly, especially at high temperature. (5) And the friction reaches to the high stable value more quickly at high percentage of SiO2, but in that case both sintered alloy and mate steel wear highly. So the reasonable content of SiO2 is less than 6%.
社団法人粉体粉末冶金協会の論文