采用“电泳+电沉积”两步法在金属基体上先预沉积CrAlSiC电泳层，再电沉积Ni，制备了NiCrAlSiC复合涂层，并制备不含SiC的NiCrAl涂层为对比样品。采用XRD、SEM、EPMA和TEM对复合涂层进行形貌、结构和成分表征，并研究其高温氧化性能和摩擦磨损性能。结果表明：复合涂层致密并与基体结合良好，涂层内颗粒分散均匀。与不含SiC的NiCrAl复合涂层相比，NiCrAlSiC复合涂层的氧化膜由NiO、NiAl₂O₄和Al₂O₃三层结构转变为NiAl₂O₄和Al₂O₃两层结构，且氧化膜更薄；同时，涂层硬度提高26%，磨损速率下降52%，磨损机制由磨粒磨损转变为黏着磨损。SiC颗粒的加入同时提高了NiCrAl涂层的抗高温氧化性能和耐磨性能。

MCrAl (M=Ni, Co, or their combinations) coatings have been widely used as high temperature oxidation protection coatings on turbine blades, as they can thermally grow stable, dense and well adherent Al₂O₃ protective scales. Due to the particulate nature of the exhaust, MCrAl coatings often fail owing to severe high-temperature wear. To improve the anti-wear resistance of the MCrAl coatings, NiCrAlSiC composite coatings were designed and fabricated by the combination of electrophoretic deposition (EPD) and electrodeposition (ED). The compositions, morphologies and structures of the as-deposited composite coatings were characterized by XRD, SEM, EPMA and TEM. A Ni7.4Cr6.2Al14.3SiC (mass fraction, %) coating, as well as a contrast SiC-free Ni7.2Cr6.2Al coating, was prepared. No cracks or micro pores were found either at the coating/substrate interface or in the coating, and elements distributed uniformly in the coating. Compared to the SiC-free coating, oxide scale on the NiCrAlSiC coating transformed from a three-layered structure (NiO, NiAl₂O₄ and Al₂O₃) to a thinner two-layered structure (NiAl₂O₄ and Al₂O₃), showing better high temperature oxidation resistance. And microhardness of the NiCrAlSiC coating increased 26%, together with the wear rate reduced 52%. Wear mechanism of the NiCrAl coating was abrasive wear, while that of the NiCrAlSiC coating switched to adhesive wear. These results indicate that the addition of SiC improves both high temperature oxidation resistance and wear resistance of the NiCrAl composite coating obviously.