Gong Xianmin, Xu Shijun, He Yiling, Wei Kaijun, Chen Quangang, Yuan Qing, He Yi, Fan Yi, Cheng Xingtao
State Key Lab of Oil & Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu 610500, China.
College of Chemistry and Chemical Engineering, Southwest Petroleum UNiversity, Chengdu 610500, China.
Langmuir. 2025 May 6;41(17):11123-11135. doi: 10.1021/acs.langmuir.5c00828. Epub 2025 Apr 28.
Metal-based composite coatings have been widely studied for their excellent properties. In order to improve the properties of nickel tungsten boron (Ni-W-B) matrix, Ni-W-B/PC coatings were prepared by electrodeposition in the presence of polydopamine functionalized VC (P-VC) and cerium oxide (CeO) nanoparticles. The effect of cerium oxide content in the nanomaterials on the properties of Ni-W-B coatings was investigated. The results showed that the prepared coatings were dense, uniform, and crack-free, and the best performance was achieved at a cerium oxide content of 2 g/L. The addition of CeO nanoparticles can fill the tiny defects in the coating and optimize the coating structure. The addition of these two materials refines the size of the coating grains. In terms of coating performance, the corrosion resistance of the composite coating was enhanced with the addition of CeO at a certain P-VC concentration, and the total impedance of the composite coating was 24,030 Ω·cm, which was 4.8 times higher than that of the Ni-W-B coating and 1.7 times higher than that of the Ni-W-B/P-VC coating. In addition, the hardness of the Ni-W-B/PC-2 composite coating reached 1033.93 HV at a CeO content of 2 g/L. The wear resistance of this composite coating was also optimized. Compared with the Ni-W-B/P-VC composite coating, the average coefficient of friction was reduced by 8.8%, and the wear resistance of the composite coating was further improved, which was attributed to the synergistic effect of the two materials. Moreover, the Ni-W-B/PC film has excellent hardness and corrosion resistance, which is promising for the application in harsh environments.
金属基复合涂层因其优异的性能而受到广泛研究。为了改善镍钨硼（Ni-W-B）基体的性能，在聚多巴胺功能化的碳化钒（P-VC）和氧化铈（CeO）纳米颗粒存在的情况下，通过电沉积制备了Ni-W-B/PC涂层。研究了纳米材料中氧化铈含量对Ni-W-B涂层性能的影响。结果表明，制备的涂层致密、均匀且无裂纹，在氧化铈含量为2 g/L时性能最佳。CeO纳米颗粒的加入可以填充涂层中的微小缺陷并优化涂层结构。这两种材料的加入细化了涂层晶粒的尺寸。在涂层性能方面，在一定的P-VC浓度下，复合涂层的耐腐蚀性随着CeO的加入而增强，复合涂层的总阻抗为24030 Ω·cm，比Ni-W-B涂层高4.8倍，比Ni-W-B/P-VC涂层高1.7倍。此外，在CeO含量为2 g/L时，Ni-W-B/PC-2复合涂层的硬度达到1033.93 HV。该复合涂层的耐磨性也得到了优化。与Ni-W-B/P-VC复合涂层相比，平均摩擦系数降低了8.8%，复合涂层的耐磨性进一步提高，这归因于两种材料的协同效应。此外，Ni-W-B/PC膜具有优异的硬度和耐腐蚀性，在恶劣环境中的应用前景广阔。
