Fe–Ni alloy coatings on carbon fiber reinforced carbon matrix composite with an enhanced interface prepared through ultrasound-assisted electrodeposition

Abstract

Fe–Ni alloys with low thermal expansion coefficients were deposited on carbon fiber reinforced carbon matrix composite (C/C composite) as metallization coatings via ultrasound-assisted electrodeposition. The interface was compact at the micrometer scale, and the micro-cracks and pores on the composite surface were fully filled with the deposited alloy. The interface shear strength reached 16.24 MPa, which was a significant improvement in comparison with that of the conventional electrodeposition. These results may have been due to the residual stress reduction, the joining area increasement, and the pinning effect enhancement.