对镁合金等离子体电解氧化膜的表面制备工艺进行了研究.采用正交设计法优化实验方案,对最佳工艺条件下制备的氧化膜的微观形貌、相组成进行了研究;采用点滴腐蚀、动电位极化曲线、循环阳极极化曲线、电化学阻抗谱及浸泡腐蚀试验对AZ31镁合金及等离子体电解氧化膜的耐腐蚀性能进行了综合评价.结果表明,制备的等离子体电解氧化膜的最佳工艺为KOH 4g/L、硅酸盐20 g/L、氧化电压300 V、氧化时间30 min;氧化膜主要成分为MgSiO3和Mg2SiO4,经过等离子体电解氧化之后其显微硬度、耐点滴腐蚀、耐均匀腐蚀和耐点腐蚀性能较AZ31镁合金均有较大提高.
参考文献
| [1] | Hongping Duan;Chuanwei Yan;Fuhui Wang .Growth process of plasma electrolytic oxidation films formed on magnesium alloy AZ91D in silicate solution[J].Electrochimica Acta,2007(15):5002-5009. |
| [2] | Blawert C;Heitmann V;Dietzel W;Nykyforchyn HM;Klapkiv MD .Influence of electrolyte on corrosion properties of plasma electrolytic conversion coated magnesium alloys[J].Surface & Coatings Technology,2007(21):8709-8714. |
| [3] | Rudnev VS;Vasilyeva MS;Kondrikov NB;Tyrina LM .Plasma-electrolytic formation, composition and catalytic activity of manganese oxide containing structures on titanium[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(5):1211-1220. |
| [4] | A. L. Yerokhin;X. Nie;A. Leyland;A. Matthews;S. J. Dowey .Plasma electrolysis for surface engineering[J].Surface & Coatings Technology,1999(2/3):73-93. |
| [5] | Boinet M;Verdier S;Maximovitch S;Dalard F .Plasma electrolytic oxidation of AM60 magnesium alloy: Monitoring by acoustic emission technique. Electrochemical properties of coatings[J].Surface & Coatings Technology,2005(2/3):141-149. |
| [6] | 王燕华 .镁合金微弧氧化膜的形成过程及腐蚀行为研究[D].中国科学院海洋研究所,2005. |
| [7] | 邓妹皓,易丹青,龚竹青,苏玉长.镁合金微弧氧化膜的制备工艺研究[J].材料科学与工艺,2007(01):22-26. |
| [8] | Liang J;Guo BG;Tian J;Liu HW;Zhou JF;Xu T .Effect of potassium fluoride in electrolytic solution on the structure and properties of microarc oxidation coatings on magnesium alloy[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2005(2):345-351. |
| [9] | Wang L;Nie X .Silicon effects on formation of EPO oxide coatings on aluminum alloys[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2006(1/2):211-218. |
| [10] | Wu ZQ;Xia Y;Li G;Xu FT .Structure and mechanical properties of ceramic coatings fabricated by plasma electrolytic oxidation on aluminized steel[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(20):8398-8403. |
| [11] | 姚忠平 .钛合金微等离子体氧化陶瓷膜的结构与耐腐蚀机制研究[D].哈尔滨工业大学,2006. |
| [12] | 杨培霞,郭洪飞,安茂忠,吴丽军.镁合金表面微弧氧化陶瓷膜耐蚀性能评价[J].航空材料学报,2007(03):33-37. |
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%