| 摘要 |
FIELD: powder metallurgy, in particular electric contact materials. ^ SUBSTANCE: invention relates to carbon-copper composite. Material is produced from copper powder having purity of 99.9 % and black carbon powder with particle size at most 5 m. Copper matrix has grid structure with through pores. One part of pores contains black carbon providing microstructure with carbon constituents. Parameter according to "International standard for annealed copper" is at least 40 %; density is at least 6.0 g/cm3. Copper powder is purified and annealed followed by blending of carbon and copper powders, double-side pressing under 500-1600 MPa, and sintering at 960-11000C. ^ EFFECT: material with increased density and conductivity and enhanced durability. ^ 20 cl, 1 dwg, 7 tbl |
