Abstract
A new method with extremely large friction force by broad interface of carbon fiber (CF : 6μm diameter) coated by nickel (Ni) to prevent TiC formation and to enhance the ability of fiber rapping by molten Ti have been suggested for a joint (Ti/NiCF/CFRP) of carbon fiber reinforced epoxy polymer (CFRP) and titanium (Ti). The new joint part was strengthened by impregnated nickel-coated carbon fiber (NiCF) exhibited the high Charpy impact value (a_<uc>). Results showed overall, the Ti/NiCF/CFRP had higher a_<uc> than the Ti/Glue/Epoxy and Ti/Epoxy at each fracture probability (Pf). Based on the SEM and XRD pattern results, the chemical compound of TiC has not been observed in the Ti/NiCF/CFRP sample. Therefore, we concludes that the Ni coating prevents the formation of TiC in the of the Ti/NiCF/CFRP joint sample. Since molten titanium does not bite the carbon fiber, the Ni coated carbon fiber exhibits to maintain the high strength.
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