Colonization of Bacteria on the Surfaces of Cold-Sprayed Copper Coatings Alters Their Electrochemical Behaviors

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2017专题

	Colonization of Bacteria on the Surfaces of Cold-Sprayed Copper Coatings Alters Their Electrochemical Behaviors
	Xia, Peng; Li, Hua; Yang, Guanjun; Suo, Xinkun; Abdoli, Leila; Liu, Yi
刊名	JOURNAL OF THERMAL SPRAY TECHNOLOGY
	2017
卷号	26 期号:4 页码:687-694
ISSN号	1059-9630
英文摘要	Copper coatings were fabricated on stainless steel plates by cold spraying. Attachment and colonization of Bacillus sp. on their surfaces in artificial seawater were characterized, and their effects on anticorrosion performances of the coatings were examined. Attached bacteria were observed using field emission scanning electron microscopy. Electrochemical behaviors including potentiodynamic polarization and electrochemical impedance spectroscopy with/without bacterial attachment were evaluated using commercial electrochemical analysis station Modulab. Results show that Bacillus sp. opt to settle on low-lying spots of the coating surfaces in early stage, followed by recruitment and attachment of extracellular polymeric substances (EPS) secreted through metabolism of Bacillus sp. The bacteria survive with the protection of EPS. An attachment model is proposed to illustrate the bacterial behaviors on the surfaces of the coatings. Electrochemical data show that current density under Bacillus sp. environment decreases compared to that without the bacteria. Charge-transfer resistance increases markedly in bacteria-containing seawater, suggesting that corrosion resistance increases and corrosion rate decreases. The influencing mechanism of bacteria settlement on corrosion resistance of the cold-sprayed copper coatings was discussed and elucidated.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13899]
专题	2017专题
推荐引用方式 GB/T 7714	Xia, Peng,Li, Hua,Yang, Guanjun,et al. Colonization of Bacteria on the Surfaces of Cold-Sprayed Copper Coatings Alters Their Electrochemical Behaviors[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2017,26(4):687-694.
APA	Xia, Peng,Li, Hua,Yang, Guanjun,Suo, Xinkun,Abdoli, Leila,&Liu, Yi.(2017).Colonization of Bacteria on the Surfaces of Cold-Sprayed Copper Coatings Alters Their Electrochemical Behaviors.JOURNAL OF THERMAL SPRAY TECHNOLOGY,26(4),687-694.
MLA	Xia, Peng,et al."Colonization of Bacteria on the Surfaces of Cold-Sprayed Copper Coatings Alters Their Electrochemical Behaviors".JOURNAL OF THERMAL SPRAY TECHNOLOGY 26.4(2017):687-694.