Inhibitory Effect of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida Dual-Species Biofilms on the Corrosion of Carbon Steel

作     者：Masoumeh Moradi Jianlin Li Wenhui Liu Dake Xu Fuhui Wang Masoumeh Moradi;Jianlin Li;Wenhui Liu;Dake Xu;Fuhui Wang

作者机构：Shenyang National Laboratory for Materials ScienceNortheastern UniversityShenyang 110819China Key Laboratory for Anisotrotropy and Texture of Materials(Ministry of Education)School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第4期

页      面：551-562页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0811[工学-控制科学与工程] 

基　　金：financially supported by the Fundamental Research Funds for the Central Universities(No.N2002001) the National Natural Science Foreign Youth Foundation of China(No.52050410345) the Natural Science Foundation of Ningbo(No.2018A610211)。 

主　　题：Dual-species biofilm Steel alloys Corrosion inhibitory Electrochemical analysis Cooperative interaction 

摘      要：Multi-species biofilms are found in various bacterial habitats and have industrial relevance. These complex bacterial communities have synergetic effects, unlike a single species. Therefore, it is critical to evaluate these complex communities as a whole. Here, the inhibitory eff ect of single-and dual-species biofilms of Vibrio neocaledinocus sp. and Pseudoalteromonas piscicida for A36 carbon steel corrosion was investigated. The results demonstrated that the synergistic interactions of the monoculture increased the overall biomass production of the dual-species biofilm, but the growth rate was reduced in the presence of the dual-species culture due to a lack of nutrients. Field emission scanning electron microscopy images also confirmed the development of biofilms—they became more homogenized via exposure time in both the mono-and dual-species cultures. The corrosion resistance of A36 carbon steel positively increased because of the dual-species interactions. This reached the highest value after four weeks of exposure. The highest corrosion inhibition e fficiency of 99.8% was achieved in the dual-species cultures. Microbial community analysis revealed the high relative abundance of Pseudoalteromonas piscicida during the initial days of exposure, demonstrating the dominant role of this bacterium in the biofilm structure.