标题：Effects of surface oxide coating on corrosion behavior of Ti-1023/LY12 galvanic couple
作者：Shi, Jun Xiu ;Liu, Jian Hua
通讯作者：Shi, J X
作者机构：[Shi, Jun Xiu ] School of Chemistry and Chemical Engineering, Longdong University, Qingyang 745000, China;[Liu, Jian Hua ] School of Material Science 更多
会议名称：2nd International Conference on Materials Science and Engineering, ICMSE 2013
会议日期：March 8, 2013 - March 10, 2013
来源：Advanced Materials Research
摘要：Galvanic corrosion behavior of Ti-1023 titanium alloy coupled to LY12 aluminum alloywas investigated in 3.5% NaCl solution. Particular attention was given to the effect of anodizedcoatings on corrosion behaviors of Ti-1023/LY12 galvanic couple. Galvanic test was conducted onthe following couples: Ti-1023/LY12, Ti-1023/anodized LY12 and anodized Ti-1023/anodizedLY12, respectively. Corrosion properties including open circuit potential (Eoc) of each material,galvanic corrosion potential (Eg) and galvanic corrosion current (Ig) of the couples were monitored.Corrosion morphology was observed by optical microscope (OM) and corrosion mechanisms wereanalyzed and discussed. It was showed that anodized coatings significantly decreased Eg and I¯g ofthe couples and provide effective protection of the anode from suffering corrosion attack. Onlyslight localized corrosion was detected on anodized LY12 alloy in the two anodized couples and theLY12 in anodized Ti-1023/anodized LY12 couple was found to be least susceptible to galvaniccorrosion. The LY12 alloy in the bare couple: Ti-1023/LY12, was found to be highly susceptible togalvanic corrosion and suffered severe uniform and localized corrosion attack. © (2013) Trans Tech Publications, Switzerland.