GH4169 is a nickel-based superalloy that has been widely used in aerospace, nuclear energy, petroleum industry and extrusion molds due to its excellent strength, weldability and long-term stability. To improve its self-cleaning and anti-icing properties in consideration of its broad applications in aerospace and aviation, we developed an electrochemical method using neutral electrolyte, followed by low surface energy treatment to fabricate superhydrophobic GH4169 surfaces. The superhydrophobic surfaces prepared in sodium nitrate and sodium chloride solutions had contact angles of 159.6° and 160.7°, and sliding angles of 7.65° and 7.8°, respectively. Their surface wettability is highly dependent on current density and process time in electrochemical etching whereas the concentration and temperature of the electrolyte are not so important. The prepared superhydrophobic GH4169 surfaces demonstrate anti-adhesion, self-cleaning and anti-icing properties.

GH4169是一种镍基高温合金，由于其优异的强度，可焊接性和长期稳定性，已广泛用于航空航天，核能，石油工业和挤出模具。考虑到其在航空航天中的广泛应用，为了提高其自洁和防冰性能，我们开发了一种使用中性电解质的电化学方法，然后进行低表面能处理，以制造超疏水性GH4169表面。在硝酸钠和氯化钠溶液中制备的超疏水表面的接触角分别为159.6°和160.7°，滑动角分别为7.65°和7.8°。它们的表面润湿性高度依赖于电化学蚀刻中的电流密度和处理时间，而电解质的浓度和温度并不那么重要。