Abstract:Abstract: Cr3C2-NiCr/NiAl coating was prepared by plasma spraying technique on the CuCo2Be alloy. The high temperature dry sliding friction and wear characteristics of Cr3C2-NiCr/NiAl coating and CuCo2Be was investigated in detail at UMT-2 tribometer by using Al2O3 ceramic ball as dual material, and it explored the temperature friction and wear behavior of the Cr3C2-NiCr/NiAl coating at different temperatures by three dimensional profile instrument，SEM， EDS, and XRD et.The results showed that the coating had obvious layered and nickel-aluminum compounds were angular,and the phase formation of the coating appeared amorphous. The study results about the friction and wear showed：500℃ through observing the wear volume morphology，it would find the wear of coating was significantly less than CuCo2Be before sprayed, so study conclusions showed Cr3C2-NiCr/NiAl coating have better high temperature wear resistance；At room temperature,the friction and wear mechanism of the composite coating was mainly abrasive wear, and wear less, and with the increase of temperature,the wear mechanism of the coating was mainly oxidation wear and adhesive wear.