Preparation of Boron Fibre Reinforced Aluminium by a Resistance Sintering Process

Boron fibre reinforced aluminium composite was prepared by a resistance sintering process. A mixture of atomized aluminium powder (−150 mesh) and boron fibre (200 μmφ, tensile strength 3200 MPa) was resistance sintered for 1.2∼1.5s. When a composite was made with an appropriate power input so as not to melt aluminium matrix excessively, a sound fibre-matrix interface without a heavy reaction layer was formed and the mechanical properties of the obtained composite was excellent (for example, Al-20 vol%B: 500 MPa).