Silicon carbide (SiC) and its composites are gaining interests because of their high physical and chemical stability, good oxidation and irradiation resistance, and excellent mechanical and thermal behaviors for nuclear cladding applications. In this work, ion irradiation on spark plasma-sintered SiC with and without nanostructured ferritic alloy aid (0vol% NFA-100vol% SiC and 2.5vol% NFA-97.5vol% SiC) was carried out using 5MeV Si++ ions at 2.2x10(18)ionscm(-2) fluence and characterized based on scanning electron microscopy and Raman spectroscopy in order to understand their irradiation resistance behaviors. The surfaces of both the 0vol% NFA-100vol% SiC and 2.5vol% NFA-97.5vol% SiC samples experience a dramatic change with the creation of a well-defined dune pattern, which can be explained based on the Bradley-Harper model. The irradiation-induced damage layer has a consistent thickness and agrees with the result from SRIM simulation. Complete amorphization occurs for the SiC phase, while a crystalline structure is maintained for the Fe3Si phase. Results of the current study have great potential for developing NFA-SiC cladding materials of nuclear reactors.