Hydrophobic porous metallic membranes can be integrated in a microreactor for in situ separation of steam at high temperatures. This study investigates the fabrication and characterization of hydrophobic coatings on metallic substrates. Two different coating methods were explored: (1) Plasma Enhanced—Chemical Vapor Deposition (PE-CVD) to form amorphous carbon silicon-doped a-C:H:Si:O thin films and (2) Direct Immersion in fluoroalkyl silane (FAS-13) solution using dip coating to form Self-Assembled Monolayers. The results on wettability as well as SEM images and EDS/WDS analyses indicate that the coated sintered stainless steel membranes are adequate as hydrophobic surfaces, maintaining the porosity of the substrate and withstanding high temperatures. Especially the FAS-13 coating shows very good resistance to temperatures higher than 250 °C. These findings are of special significance for the fabrication of porous metal membranes for separation of steam in high temperature applications.

中文翻译：

---

高温应用疏水性多孔金属膜的制备与表征

疏水性多孔金属膜可以集成在微反应器中，以在高温下原位分离蒸汽。这项研究调查了金属基材上疏水涂层的制备和表征。探索了两种不同的涂覆方法：（1）等离子增强化学气相沉积（PE-CVD）形成非晶碳掺杂的aC：H：Si：O薄膜，以及（2）直接浸入氟代烷基硅烷（FAS-13） ）溶液，使用浸涂形成自组装单层膜。润湿性的结果以及SEM图像和EDS / WDS分析表明，涂覆的烧结不锈钢膜足以作为疏水表面，保持基材的孔隙率并承受高温。尤其是FAS-13涂层对高于250°C的温度表现出非常好的抵抗力。