An edible biomimetic Oleogel-Infused Coating: Preparation and enhanced durability for corrosion protection of B10 in aqueous environments

Cu alloy B10 is widely used for fabricating pipelines but still suffers from corrosion. This study addresses the construction of bioinspired coatings based on nickel myristate on B10 alloy via a one-step electrodeposition approach. The influence of electrodeposition voltage on the surface morphology is evaluated. An applied potential of 30 V for 30 min is the optimal electrochemical deposition condition, resulting in dendritic structure. The static contact angle is measured as 155.2° to verify superhydrophobicity surface (SHS). Scanning Kelvin Probe (SKP) is employed for revealing corrosion resistance from SHS to underneath B10 alloy, indicating that SHS significantly increases corrosion potential from −500 mV of the bare metal to −230 mV. From electrochemical impedance spectroscopy perspective, |Z|_{0.01 Hz} for B10 alloy coated with SHS and oleogel infused surface (OIS) is 9.84 × 10⁶ Ω cm² and 1.08 × 10¹⁰ Ω cm², approximately three and seven orders of magnitude higher than bare B10 alloy (3.07 × 10³ Ω cm²), showing both coatings enhance corrosion resistance. OIS coating shows the high self-healing capability. Even after 3 cycles of mechanical scratch, |Z|_{0.01 Hz} value of the OIS coating remains 4.16 × 10⁹ Ω⋅cm². Furthermore, OIS exhibits a substantial time for delaying icing, showing high anti-icing performance.