Vourna Polyxeni, Falara Pinelopi P, Hristoforou Evangelos V, Papadopoulos Nikolaos D
Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research "Demokritos", 15341 Agia Paraskevi, Greece.
School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., 15780 Zografou, Greece.
Materials (Basel). 2025 Jun 30;18(13):3095. doi: 10.3390/ma18133095.
This study involved covering naval steel samples with a biocide-free, innovative antifouling coating, which were subsequently immersed in either artificial seawater or a Greek maritime environment for durations ranging from 1 to 50 weeks. The objective was to assess the efficacy of the coating as an anticorrosion and antifouling barrier on the steel samples. Non-coated samples were analyzed alongside the coated samples for comparative purposes. The findings indicate that a reduction in coating thickness during static immersion in laboratory settings leads to the removal of precipitated corrosion products, exposing a fresh layer of "pristine" coating. This layer decreases the corrosion rate by almost 90% throughout extended immersion durations. The efficacy of the coating is validated through trials conducted in natural maritime environments, demonstrating an operational performance of 99% for the coated samples after 50 weeks of continuous exposure to seawater. In fact, the coated samples showed only soft fouling, in contrast to the uncoated samples which were characterized by a strong presence of hard fouling within a short period of time after immersion.
本研究涉及用一种无杀菌剂的创新型防污涂层覆盖海军钢样本，随后将其浸入人工海水或希腊海洋环境中1至50周不等。目的是评估该涂层作为钢样本防腐和防污屏障的功效。为作比较，对未涂层样本和涂层样本一起进行了分析。研究结果表明，在实验室环境下静态浸泡期间涂层厚度的减少会导致沉淀的腐蚀产物被去除，从而暴露出一层新的“原始”涂层。在延长的浸泡期间，这一层可使腐蚀速率降低近90%。通过在天然海洋环境中进行的试验验证了该涂层的功效，在连续暴露于海水50周后，涂层样本的运行性能达到99%。事实上，涂层样本仅显示出轻微的污垢，而未涂层样本在浸入后短时间内就有大量硬污垢。
