Living marine bacterium Tenacibaculum mesophilum D-6 inhibits crevice corrosion of X70 carbon steel

Abstract

Severe corrosion was detected using a simulated crevice with 50% crevice coverage. The corrosion protection effect of living marine bacterium Tenacibaculum mesophilum D-6 was systematically investigated. According to the weight loss data, the corrosion rate decreased by 61.3%, and the corrosion current density decreased from 2.2 ± 0.3 to 0.8 ± 0.2 μA cm −2 with T. mesophilum D-6 inoculation. We further clarified the protective mechanisms of living biofilm by T. mesophilum D-6 relied on the secreted EPS and oxygen consumption . This work provides a perspective for developing a novel, sustainable and economical technology for crevice corrosion inhibition .

Topics & Concepts