<p>A composite material layer, utilizing ceramic powder as the coating material, was successfully fabricated on the surface of heat exchange tubes via high-speed laser cladding technology. This significantly enhanced the corrosion resistance and wear resistance of the tubes. Research findings demonstrated that as the Sn content increased, the solid solution strengthening and grain boundary strengthening effects of the Cu-9Ni-Sn alloy cladding layer were progressively enhanced, thereby improving the thermal conductivity, tensile strength, and hardness of the cladding layer. The increase in Sn content reduced the ability of the passivation film on the surface of the Cu-9Ni-Sn alloy cladding layer to adsorb anions, which in turn elevated the pitting corrosion potential and improved the corrosion resistance of the cladding layer. When the Sn content reached 6&#xa0;wt.%, the cladding layer exhibited optimal corrosion resistance, with a corresponding corrosion current density (<i>I</i>_corr) of 3.12&#xa0;μA&#xa0;cm⁻², self-corrosion potential (<i>E</i>_corr) of − 0.836&#xa0;V, passivation current density (<i>I</i>_pass) of 14.5&#xa0;μA&#xa0;cm⁻², and a final constant value of 0.16 × 10⁻⁶&#xa0;A&#xa0;cm⁻². In practical engineering applications, to address the issue of large-area corrosion damage in heat exchange tubes, the preparation of a Cu-9Ni-6Sn alloy cladding layer ensures good thermal conductivity while effectively enhancing the corrosion resistance and wear resistance of the tubes.</p>