Sun Yi, Hou Xiangshan, Xu Shijun, Yuan Qing, Liu Han, Gong Xianmin, Chen Quangang, Fan Yi, He Yi, Zhang Shihong
State Key Laboratory of Oil and 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 Aug 12;41(31):21073-21091. doi: 10.1021/acs.langmuir.5c02811. Epub 2025 Jul 30.
Zirconium carbide (ZrC) is widely recognized for its exceptional hardness and thermal stability, making it a promising candidate for advanced coating applications. In this study, a novel PDA@ZrC-CeO (PC@ZrC) composite material was prepared to enhance the corrosion resistance of the coating system. ZrC was modified with polydopamine (PDA) to improve its compatibility with the system. Subsequently, cerium oxide with a corrosion-inhibiting effect was introduced to form a multifunctional composite material. This composite material was integrated into the coating system using a simple deposition method. The effects of the composite on the surface morphology, phase structure, mechanical properties, and corrosion resistance of the Ni-W-P coating were investigated. The results show that Ni-W-P/PC@ZrC coating surfaces are dense and uniform among all the composite coatings, with no obvious defects. The average coefficient of friction is reduced by 30.3% compared with the pure coating, and the impedance value is nearly three times that of the pure coating. This is because the excellent dispersibility of PC@ZrC enables it to be evenly dispersed in the coating and fill the defects, giving the Ni-W-P/PC@ZrC coating excellent mechanical properties and corrosion resistance. The dual protection effect of PDA and cerium oxide at the same time gives Ni-W-P/PC@ZrC coating excellent long-term corrosion resistance.
碳化锆（ZrC）因其出色的硬度和热稳定性而被广泛认可，使其成为先进涂层应用的有前途的候选材料。在本研究中，制备了一种新型的聚多巴胺@碳化锆-氧化铈（PC@ZrC）复合材料，以提高涂层体系的耐腐蚀性。用聚多巴胺（PDA）对ZrC进行改性，以改善其与体系的相容性。随后，引入具有缓蚀作用的氧化铈以形成多功能复合材料。使用简单的沉积方法将这种复合材料集成到涂层体系中。研究了该复合材料对Ni-W-P涂层的表面形貌、相结构、力学性能和耐腐蚀性的影响。结果表明，在所有复合涂层中，Ni-W-P/PC@ZrC涂层表面致密且均匀，无明显缺陷。与纯涂层相比，平均摩擦系数降低了30.3%，阻抗值几乎是纯涂层的三倍。这是因为PC@ZrC的优异分散性使其能够均匀地分散在涂层中并填充缺陷，赋予Ni-W-P/PC@ZrC涂层优异的力学性能和耐腐蚀性。PDA和氧化铈同时产生的双重保护作用赋予Ni-W-P/PC@ZrC涂层优异的长期耐腐蚀性。
