标题：Study on corrosion behavior of Ti-Ni-Nb shape memory alloy and 1Cr18Ni9Ti stainless steel aeroplane pipe system
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：The susceptibility to stress corrosion cracking (SCC) and galvanic corrosion of anaeroplane pipe made of 1Cr18Ni9Ti connected with a pipe coupling that made of Ti-Ni-Nb shapememory alloy were evaluated. SCC test was completed under simulated service environment in 6%NaCl solution through a self-designed corrosive system. Galvanic corrosion behavior ofTi-Ni-Nb/1Cr18Ni9Ti couple was conducted in 3.5% NaCl solution at 30°C, in which galvaniccorrosion current (Ig) and galvanic corrosion potential (Eg) were monitored. The corrosionmorphology was observed by using scanning electronic microscope (SEM) and optical microscope(OM) after SCC test and galvanic test. It was showed that no obvious corrosion was detected on thesurface of the whole pipe system after the simulated test. The two metals showed excellentresistance to SCC based on the section morphology observation. The average galvanic corrosioncurrent of 1Cr18Ni9Ti/Ti-Ni-Nb couple was 0.13μA/cm2. No obvious corrosion pitting wasdetected on the surface of the two alloys by OM observation. Therefore, 1Cr18Ni9Ti pipe wassafely connected with Ti-Ni-Nb pipe coupling in aeroplane pipe system. © (2013) Trans Tech Publications, Switzerland.