Synthesis of ceria based superhydrophobic coating on Ni20Cr substrate via cathodic electrodeposition

Abstract

In this work, superhydrophobic cerium oxide coating surface (111) with dual scale texture on Ni20Cr substrate is obtained by combination of electropolishing the substrate and subsequent cathodic electrodeposition and long-term UVH surface relaxation. To form hierarchical structures of CeO2 is controllable by varying the substrate roughness, and electropolishing period. The results indicated that at the optimal condition, the surface of the cerium oxide coating showed a superhydrophobicity with a great water contact angle (151.0 ± 1.4°) with Gecko state. An interface model for electropolishing of substrate surface in cerium nitrate medium is proposed. We expect that this facile process can be readily and widely adopted for the design of superhydrophobic coating on engineering materials.

Facile preparation of self-healing superhydrophobic CeO2 surface by electrochemical processes

“…REOs are of recent interest [21][22][23][24]. Most reports preparing hydrophobic REO coatings utilized dry processes such as sputtering [21] or atomic layer deposition [24].…”

Superhydrophobic Cerium-Based Coatings on Al-Mg Alloys and Aluminized Steel

“…This can be confirmed by comparing the roughness results displayed in Table 2. Figure 5b,d shows that the electrodeposition method creates a cauliflower-like structure due to the growth of cerium particles [28,29]. We found that the size of the nano-asperities formed on the AS samples were smaller than for the Al-Mg samples due to the greater number of preferential sites.…”

“…In this work, we propose top-down and bottom-up strategies to produce superhydrophobic cerium-based coatings on Al-Mg alloy and AS substrates. Similar strategies have been used earlier for different substrates [8,28,29]. Unlike other works reported for the same materials and similar purposes, the protocols described here do not require etching with strong acids for the texturization [23].…”

“…Tilting plate experiments were carried out with a tilting apparatus, the details of which having been given elsewhere [29]. For each experiment, a 50 µL drop of Milli-Q water was deposited on the sample.…”

Advanced Multifunctional Corrosion Protective Coating Systems for Light-Weight Aircraft Alloys—Actual Trends and Challenges

“…The actual trends for hydrophobic and super-hydrophobic coating layers development are based on the formation of highly textured cerium oxide primers with micro and nanoflower [42], Gecko footprint [43] morphologies. This approach enables to avoid also the snow and ice heaping on the wings, which was the suspected reason for the aircraft crash at 7th of February 1958 in Munich, which was appeared to be a great disaster for the "Manchester United" football team during large years [44].…”