In this investigation, nickel coating and Ni-SiC nanocomposites (NCs) were prepared on Q235 steel surfaces through a magnetic-field-assisted electrodeposition method. Microstructures, microhardness values, and compositions of the NCs were studied through digital holographic microscopy, scanning electron microscopy, transmission electron microscopy, and x-ray diffraction. In addition, the wear and corrosion properties of the Ni-SiC NCs were tested in detailed. The nanocomposites showed uniform and compact structures prepared at 0.6 T, and the SiC and Ni particle sizes were about 42.2 and 79.9 nm, respectively. As the magnetic field strength increased from 0.3 to 0.6 T, the diffraction peaks of the nickel grains widened and the diffraction intensity decreased, indicating that the nickel grains in the Ni-SiC NC obtained at 0.6 T were refined. Comparing the three prepared composites, the microhardness of the Ni-SiC NC obtained at 0.6 T was the highest with an average value of 845.6 HV, and the mass loss was the lowest with a value of 47.2 mg. In addition, the nanocomposite showed the smallest corrosion current density of 0.36×10⁻⁴ A/cm², which corresponded to the best corrosion resistance.

在这项研究中，通过磁场辅助电沉积方法在 Q235 钢表面制备了镍涂层和 Ni-SiC 纳米复合材料（NCs）。通过数字全息显微镜、扫描电子显微镜、透射电子显微镜和 X 射线衍射研究了 NCs 的微观结构、显微硬度值和组成。此外，详细测试了 Ni-SiC NCs 的磨损和腐蚀性能。在 0.6 T 下制备的纳米复合材料显示出均匀致密的结构，SiC 和 Ni 的粒径分别约为 42.2 和 79.9 nm。随着磁场强度从 0.3 T 增加到 0.6 T，镍晶粒的衍射峰变宽，衍射强度降低，表明在 0.6 T 获得的 Ni-SiC NC 中的镍晶粒得到细化。比较制备的三种复合材料，在 0.6 T 下获得的 Ni-SiC NC 的显微硬度最高，平均值为 845.6 HV，质量损失最低，为 47.2 mg。此外，纳米复合材料的最小腐蚀电流密度为 0.36×10^-4 A/cm ²，这对应于最好的耐腐蚀性。