The 5vol%TiBw/TA15 composite with mesh structure was prepared by low-energy ball milling in conjunction with vacuum hot pressing sintering technique, and its corrosion resistance was investigated. Pure TA15 and 5vol%TiBw/TA15 composite were subjected to electrochemical corrosion tests. The open circuit potential, polarization curves, and electrochemical impedance spectra of the two materials were measured and compared in 3.5wt% NaCl corrosion solution. The results show that compared with pure TA15, the composite reinforced by 5vol% TiBw with mesh structure has a lower self-corrosion current density (0.033 μA·cm^-2), higher polarization resistance value (42 993 kΩ·cm²), and fewer corrosion pits, demonstrating superior corrosion resistance. This phenomenon is attributed to the presence of TiBw reinforcement, which accelerates the formation of a stable TiO₂ passivation film on the surface of the 5vol%TiBw/TA15 composite compared to pure TA15 during the electrochemical corrosion process.