采用动电位扫描技术研究了X70管线钢在CO32-/HCO3-溶液中的电化学行为.通过分析X70管线钢在Na2CO3/NaHCO3溶液中的极化曲线,讨论了HCO3-的浓度对阳极极化行为的影响.采用快扫描与慢扫描得到的结果,分别利用Parkins边界条件和应力腐蚀破裂(SCC)参数Pi,预测出X70管线钢在1 mol/L NaHCO3+0.5 mol/L Na2CO3溶液中的SCC敏感性电位区间,两种方法得到的结果基本一致.
参考文献
| [1] | 刘杏,杨武.天然气长输管线应力腐蚀破裂的敏感性条件[J].机械工程材料,2002,1:5. |
| [2] | Delanty B,O Beime J.Major field study compares pipeline SCC with coatings[J].Oil Gas Journal,1992,90(24):39. |
| [3] | Parkins R N,S Zhou.The stress corrosion cracking of C-Mn steel in CO2-HCO3--CO32- solutions.Ⅱ:electrochemical and other data[J].Corrosion Science,1997,39:175. |
| [4] | B R Linter,G T Burstein.Reactions of pipeline steels in carbon dioxide solutions[J].Corrosion Science,1999,41:117. |
| [5] | J M Blengino,M Keddam,J P Labbe,et al.Physico-chemical characterization of corrosion layers formed on iron in a sodium carbonate-bicarbonate containing environment[J].Corrosion Science,1995,37:621. |
| [6] | Parkins R N.Predictive approaches to stress corrosion cracking failure[J].Corrosion Science:1980,20:147. |
| [7] | Parkins R N.Mechanistic aspects of intergranular stress corrosion cracking of ferritic steels[J].Corrosion,1996,52:363. |
| [8] | Fang Z,Staehle R W.Effects of the valence of sulfur on passivation of alloys 600,690,and 800 at 25℃ and 95℃[J].Corrosion,1999,55(4):363. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%