Slippery liquid-infused porous surfaces fabricated on aluminum as a barrier to corrosion induced by sulfate reducing bacteria

• Slippery liquid-infused porous surfaces (SLIPS) were fabricated over aluminum.
• SLIPS depress the adherence of sulfate reducing bacteria in static seawater.
• SLIPS inhibit the microbiological corrosion of aluminum in static seawater.
• The possible microbiological corrosion protection mechanism of SLIPS is proposed.

Microbiological corrosion induced by sulfate reducing bacteria (SRB) is one of the main threatens to the safety of marine structure. To reduce microbiological corrosion, slippery liquid infused porous surfaces (SLIPS) were designed and fabricated on aluminum substrate by constructing rough aluminum oxide layer, followed by fluorination of the rough layer and infiltration with lubricant. The as-fabricated SLIPS were characterized with wettability measurement, SEM and XPS. Their resistances to microbiological corrosion induced by SRB were evaluated with fluorescence microscopy and electrochemical measurement. It was demonstrated that they present high resistance to bacteria adherence and the resultant microbiological corrosion in static seawater.