Abstract：
The detrimental impact of corrosion on metallic materials remains a pressing concern across industries. Recently, intelligent anti-corrosive coatings for safeguarding metal infrastructures have garnered significant interest. These coatings are equipped with micro/nano carriers that store corrosion inhibitors and release them when triggered by external stimuli. These advanced coatings have the capability to elevate the electrochemical impedance values of steel by 2-3 orders of magnitude compared to the blank coating. However, achieving intelligent, durable, and reliable anti-corrosive coatings requires careful consideration in the design of these micro/nano carriers. This review paper primarily focuses on investigating the corrosion inhibition mechanism of various nano/micro carriers/barriers and identifying the challenges associated with using them for achieving desired properties in anti-corrosive coatings. Furthermore, the fundamental aspects required for nano/micro carriers, including compatibility with the coating matrix, high specific surface area, stability in different environments, stimuli-responsive behavior, and facile synthesis were investigated. To achieve this aim, we explored the properties of micro/nanocarriers based on oxide nanoparticles, carbonaceous and two-dimensional (2D) nanomaterials. Finally, we reviewed recent literature on the application of state-of the art nanocarriers based on metal-organic frameworks (MOFs) and covalent-organic frameworks (COFs). We believe that the outcomes of this review paper offer valuable insights for researchers in selecting appropriate materials that can effectively enhance the corrosion resistance of coatings.
摘要：
腐蚀对金属材料的有害影响仍然是整个行业的紧迫问题。最近,用于保护金属基础设施的智能防腐涂料引起了人们的极大兴趣。这些涂层配备有微/纳米载体,其储存腐蚀抑制剂并在被外部刺激触发时释放它们。与空白涂层相比，这些先进的涂层能够将钢的电化学阻抗值提高2-3个数量级。然而,实现智能化，耐用,和可靠的防腐蚀涂料需要仔细考虑这些微/纳米载体的设计。这篇综述论文主要集中在研究各种纳米/微米载体/屏障的腐蚀抑制机理，并确定与使用它们在防腐涂层中实现所需性能相关的挑战。此外，纳米/微米载体所需的基本方面，包括与涂层基质的相容性，高比表面积，在不同环境中的稳定性，刺激反应行为，并进行了简单的合成研究。为了实现这一目标，我们探索了基于氧化物纳米粒子的微/纳米载体的性质，碳质和二维(2D)纳米材料。最后,我们回顾了最近关于基于金属有机框架（MOFs）和共价有机框架（COFs）的最先进的纳米载体的应用的文献。我们相信，这篇综述论文的结果为研究人员选择合适的材料提供了有价值的见解，这些材料可以有效地增强涂层的耐腐蚀性。
