| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention relates to composite materials (CM) based on tin babbites alloys and synthesis methods thereof, and can be used for making friction bearings of friction units in transport, turbine manufacturing, shipbuilding. Composite material based on Sn-Sb-Cu alloy contains reinforcing discrete particles. As reinforcing discrete particles it contains carbon-containing components with size of <100 nm in amount of 0.1-2 wt. % in form of carbon nanotubes, amorphous carbon, graphite and carbon-coated nano particles of metal particles mixture and high-strength ceramic particles of SiC powder with size of 14-63 mcm in amount of 5-10 wt %. Method for composite material producing based on Sn-Sb-Cu alloy includes preparing mixture of reinforcing discrete particles and powder of Sn-Sb-Cu matrix alloy. One mixes reinforcing discrete particles in form of carbon nanotubes, amorphous carbon, graphite nano particles, metal particles coated with carbon and high-strength ceramic particles of SiC powder with powder of matrix alloy by high-energy mixing in ball mill for 20-30 minutes. Produced mixture is subjected to hot bilateral pressing at temperature of 280-320 °C and pressure of 300-340 MPa and subsequent sintering.EFFECT: higher wear resistance of material in conditions of limited lubrication and dry sliding friction.2 cl, 1 dwg, 1 tbl, 1 ex |
