2008•Cailiao baohuRequires access
Galvanic Corrosion of Carbon Steel/Stainless Steel Couple in CO_2-Containing Corrosive Environment by Weight Loss Method
Xingpeng Guo
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Abstract
The corrosion behavior of N80 steel /S31803 stainless steel galvanic couple in CO_2-containing corrosive environment at high temperature and high pressure was studied using weight loss method.Thus-the effects of temperature,pressure,and area ratio on the galvanic corrosion of the carbon steel/stainless steel galvanic couple were investigated.Results indicated that the anode of the couple(N80 steel)had a maximum corrosion rate at a certain elevated temperature under normal pressure.The logarithmic value of the corrosion rate linearly corresponded to that of the area ratio.Besides,the N80 steel as the anode of the galvanic couple showed a maximum corrosion rate and a minimum one as well at certain elevated temperatures under a CO_2 partial pressure of 2.5 MPa,while the corrosion rale of the N80 steel at different temperatures increased with increasing area ratio.