In this study, we describe a smart coating that responds to either an increase or a decrease in pH to assist inhibitor effectiveness. Dual-pH sensitive microspheres containing a corrosion inhibitor were fabricated using a simple, template-free, one-step process. A polyelectrolyte coacervate consisting of polyacrylic acid and polyethylenimine was the shell material of microspheres that enclosed Ce(NO₃)₃ inhibitor using a coaxial electrospray method. The Ce(NO₃)₃-loaded microspheres with a core-shell structure can release Ce(NO₃)₃ at both acidic and alkaline pH. A smart coating consisting of these microspheres embedded in a polyvinyl butyral coating releases Ce(NO₃)₃ to improve the corrosion resistance of AA2024-T3.

在这项研究中，我们描述了一种智能涂层，它可以响应 pH 值的增加或减少来帮助抑制剂的有效性。含有缓蚀剂的双 pH 敏感微球是使用简单的、无模板的、一步法制造的。由聚丙烯酸和聚乙烯亚胺组成的聚电解质凝聚层是使用同轴电喷雾方法包裹Ce(NO ₃ ) ₃抑制剂的微球壳材料。具有核壳结构的Ce(NO ₃ ) ₃负载微球可以在酸性和碱性pH下释放Ce(NO ₃ ) ₃。由嵌入聚乙烯醇缩丁醛涂层中的这些微球组成的智能涂层释放 Ce(NO ₃) ₃提高AA2024-T3的耐腐蚀性。