Abstract
Carbon fiber reinforced polymer (CFRP) and light metals are typical light structural materials with high specific strength to save their energy and to enhance the mobility of airplane. In order to prevent the fracture at joint interface, a joining method using impregnated nickel (Ni)-coated bundles of carbon fiber (CF) with:6 μm-diamete had been successfully developed in joining between CFRP and light metals. The joint with strong interfacial friction force of fiber and matrix enhanced the tensile strength and Charpy impact value of light metals/CFRP. Increasing the volume fraction of carbon fibers up to 7 vol% always enhanced both tensil fracture strength and Charpy impact value. Both values became to be satulation at more than 10 vol% carbon fibers. The Ni coating improved the contact condition between carbon fibers and molten aluminum, resulting making composite very well. In addition, it prevent to form the great amount of aluminum carbites, resulting in getting strong light metal/CFRP joint reinforced by carbon fibers.
