对镁-铝合金β相模型合金在不同浓度的Cl-溶液环境中的腐蚀电化学行为进行研究.结果表明,随着Cl-浓度的增加,β相的自腐蚀电位依次降低.但β相与а相之间的电位差没有随Cl-浓度的增加递增.β相在不同浓度的Cl-溶液中均能发生钝化,随Cl-浓度的增加点蚀击破电位降低,相应表面膜中含Mg的腐蚀产物种类也增多.在不同浓度Cl-溶液环境中,β相模型合金的腐蚀电化学结果可以揭示β相的微电偶作用.
参考文献
| [1] | Lunder O,Lein J E,Aune T K,et al.The role of the Mg17Al12 phase in the corrosion of Mg alloy AZgl[J].Corrosion,1989,45 (9):741. |
| [2] | Song G L,Atrens A,Wu X L,et al.Corrosion behaviour of AZ21,AZ501 and AZ91 in sodium chloride[J].Corros.Sci.,1998,40(10):1769. |
| [3] | Jia R L,Yah C W,Wang F H.Influence of A1 content on the atmospheric corrosion behavior of magnesiumaluminum alloys[J].J.Mater.Sci.Technol.,2009:25:225. |
| [4] | 陈宏海.金属腐蚀学[M]_北京:北京理工大学出版社,1995:7. |
| [5] | 张波.微晶化对纯铝电化学腐蚀行为的影响[D].中科院金属研究所博士论文,2007:4. |
| [6] | Zhang T,Shao Y W,Meng G Z,et al.Effects of hydrogen on the corrosion of pure magnesium[J].Electrochim.Acts,2006,52:1323. |
| [7] | Abd El Aal E E.Effect of Cl-anions on zinc passivity in borate solution[J].Corros.Sci.,2000,42:1. |
| [8] | Szklarska-Smialowska Z.Pitting corrosion of aluminum[J].Corros.Sci.,1999,41:1743. |
| [9] | φ vari F,Tomcsányi L,Túrmezey T.Electrochemmical study of the pitting corrosion of aluminium and its alloysI.determination of critical pitting and protection potentials[J].Electrochim.Acts.,1988,33:323. |
| [10] | McCafferty E.Sequence of steps in the pitting of aluminum by chloride ions[J].Corros.Sci.,2003,45:1421. |
| [11] | Sikora E,Macdonald D.Nature of the passive film on nickel[J].Electrochim.Acta.2002,48:69. |
| [12] | 贾瑞灵,严川伟,王福会.Al含量对镁铝合金大气腐蚀产物膜结构与性能的影响[J].材料研究学报.2007,21(5):471. |
| [13] | Mathieu S,Rapin C,Steimetz J,et al.A corrosion study of the main constituent phase of AZ91 magnesium alloys[J].Corros.Sci.,2003,45:2741. |
| [14] | 曹楚南.腐蚀电化学原理(第二版)[M].北京:化学工业出版社,2004:105. |
| [15] | 斯库里J C(英)著.李启中译.腐蚀原理(第二版)[M].北京:水利电力出版社,1984,11:56. |
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%