In this work, we designed and fabricated an anti-scaling and anti-corrosion superhydrophobic 1H,1H,2H,2H-perfluorodecyl triethoxysilane (PFDS)/ethylenediamine tetraacetic acid (EDTA)/anodized copper oxide (ACO) coating at the surface of a copper alloy. The water contact angle of PFDS/EDTA/ACO coating reaches 164.53°, showing superhydrophobicity, which will reduce the contact between scale crystals, corrosive medium and substrates, and help to inhibit scaling deposition and corrosion. Results show during the CaCO₃ deposition test, EDTA molecules, EDTA-Zn²⁺ and EDTA-Cu²⁺ chelates stored in the micro-structure of superhydrophobic PFDS/EDTA/ACO coating are released to the interface and help to improve scaling prevention. After soaking for 48 h, the CaCO₃ scaling mass of PFDS/EDTA/ACO coating was only 27.0 % that of ACO coating, and the corrosive protection efficiency of the superhydrophobic PFDS/EDTA/ACO coating was improved by 3.4 times that of ACO coating. Studies indicated that the anti-scaling and anti-corrosion of the superhydrophobic PFDS/EDTA/ACO coating contributes to the cooperation of superhydrophobic air film and the potential storage and dynamic release of EDTA, as well as the passivation layer formed on the substrate.

在这项工作中，我们设计并制备了一种防垢防腐蚀超疏水 1H,1H,2H,2H-全氟癸基三乙氧基硅烷 (PFDS)/乙二胺四乙酸 (EDTA)/阳极氧化铜 (ACO) 涂层，用于铜合金。PFDS/EDTA/ACO涂层的水接触角达到164.53°，表现出超疏水性，减少水垢结晶、腐蚀介质与基体的接触，有助于抑制水垢沉积和腐蚀。结果表明，在 CaCO ₃沉积试验中，超疏水 PFDS/EDTA/ACO 涂层微结构中储存的EDTA 分子、EDTA-Zn ²⁺和 EDTA-Cu ^{2+螯合物被释放到界面，有助于提高防结垢能力。}浸泡 48 h 后，CaCO_3PFDS /EDTA/ACO涂层的结垢质量仅为ACO涂层的27.0%，超疏水PFDS/EDTA/ACO涂层的腐蚀防护效率是ACO涂层的3.4倍。研究表明，超疏水PFDS/EDTA/ACO涂层的防垢、防腐蚀作用与超疏水空气膜的协同作用以及EDTA的潜在储存和动态释放，以及在基体上形成的钝化层有关。