Synthesis of an Al matrix composite reinforced by carbon nanoparticles with excellent high-temperature strength

Ultrafine grained (UFG) n-C/Al composites were prepared using petroleum coke as the carbon source via mechanical ball milling and hot extrusion. After extrusion, n-C layers exhibited a network-like distribution in the matrix, with tensile strengths of 478 ± 8 MPa (room temperature) and 227 ± 5 MPa (350 °C), respectively.