Abstract
The corrosion behavior of HSn70-1copper alloy in sulfate-reducing bacteria (SRB) con- taining medium in the absence and presence of a static magnetic field (SMF) respectively was in- vestigated by means of weight loss method, electrochemical measurement and surface analysis method. The results showed that the corrosion weight loss and the corrosion current density of the alloy was higher in the inoculated SRB medium in the absence of SMF rather than those in the pres- ence of SMF. Thus the presence of a SMF can suppress effectively the corrosion of copper alloy. The results of SEM/EDS, XRD and XPS analysis showed that in the inoculated SRB medium a compact and uniform film formed on the surface of copper alloy in the presence of SMF, the corro- sion products were cuprous sulfide; however in the absence of SMF the formed corrosion product on the alloy was loose and consisted of cupric sulfide. In fact the compact corrosion scale of cu- prous sulfide could effectively suppress the SRB induced corrosion of copper alloy.
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