A STUDY ON CORROSION BEHAVIOR UNDER THE BIOFILM OFSULFATE-REDUCING BACTERIA ON Cu-Zn ALLOY

J Chin Soc Corr Pro

2001, Vol. 21

Issue (6): 345-351 DOI:

Research Report

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A STUDY ON CORROSION BEHAVIOR UNDER THE BIOFILM OFSULFATE-REDUCING BACTERIA ON Cu-Zn ALLOY

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武汉市华中科技大学化学系

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Abstract In this paper，the biofilm of sulfate-reducing bact eria (SRB) which plays an important role in corrosion of 70/30 Cu-Zn alloy under anaerobic condition has been studied.The API medium was used to culture the SR B in Zhongyuan oilfield.Potential/time measurement showed that the presence of SRB makes the corrosion protential more active with SRB growth metabolite.Elect rochemical impedance spectroscopy (EIS) was used to analyse the electrode proces s of 70/30 Cu-Zn alloy with SRB biofilm.X-ray diffraction and EPMA were used to analyse the corrosion products.The results show that the variation of activity of the SRB biofilm with SRB growth can be found from the EIS in inoculated medi a.The crystal of sub-copper sulfide (Cu2S) exists in the SRB biofilm.

Key words: SRB Cu-Zn alloy corrosion EIS

Received: 06 September 2000

ZTFLH:	Q939.98
	TG172.7

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. A STUDY ON CORROSION BEHAVIOR UNDER THE BIOFILM OFSULFATE-REDUCING BACTERIA ON Cu-Zn ALLOY. J Chin Soc Corr Pro, 2001, 21(6): 345-351 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2001/V21/I6/345

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