通过正交试验确定了以焦磷酸盐和锡酸盐为主要成分的镁合金化学转化处理的最佳工艺.用集气法和电化学方法评价了转化膜在中性NaCl溶液(NaCl的质量分数为3.5%)中的腐蚀行为;用扫描电镜和X射线衍射分析了转化膜的结构和形貌,探讨了转化膜的形成机理.结果表明:锡酸盐转化处理后在镁合金表面形成了以MgSnO3·H2O为主要成分的转化膜,转化膜由细小的球形颗粒密积而成;腐蚀性能评价证明它可对基体合金起到一定的防护作用.
参考文献
| [1] | 李瑛,余刚,刘跃龙,叶立元,郭小华.镁合金的表面处理及其发展趋势[J].表面技术,2003(02):1-5. |
| [2] | 师昌绪,李恒德,王淀佐,李依依,左铁镛.加速我国金属镁工业发展的建议[J].材料导报,2001(04):5-6. |
| [3] | Guang Ling Song;Andrej Atrens .Corrosion mechanisms of magnesium alloys[J].Advanced Engineering Materials,1999(1):11-33. |
| [4] | 王洁,丁毅,徐蔚,王玲玲.AZ31镁合金表面磷化工艺研究[J].表面技术,2006(02):55-56. |
| [5] | Baliga C B;Tsakiropoulos P .Development of corrosion resistant magnesium alloys Part 1:Characterisation of splat quenched Mg-10Al and Mg-16Al alloys[J].Materials Science and Technology,1993,9(06):507-512. |
| [6] | Shinji Fukumoto;Atsushi Yamamoto;Mititaka Terasawa .Microstructures and Corrosion Resistance of Magnesium Implanted with Nitrogen Ions[J].Materials transactions,2001(7):1232-1236. |
| [7] | Subramanian R;Sircar S;Mazumder J .Laser cladding of zirconium on magnesium for improved corrosion properties[J].Journal of Materials Science,1991,26(04):951-956. |
| [8] | Amy L. Rudd;Carmel B. Breslin;Florian Mansfeld .The corrosion protection afforded by rare earth conversion coatings applied to magnesium[J].Corrosion Science,2000(2):275-288. |
| [9] | Zozulin A J;Bartak D E .Anodized coating for magnesium alloys[J].Metal Finishing,1994,34(03):39-44. |
| [10] | Lee MH.;Bae IY.;Kim KJ.;Moon KM.;Oki I. .Formation mechanism of new corrosion resistance magnesium thin films by PVD method[J].Surface & Coatings Technology,2003(0):670-674. |
| [11] | 霍宏伟,李瑛,王福会.AZ91D镁合金化学镀镍[J].中国腐蚀与防护学报,2002(01):14-17. |
| [12] | 高瑾,涂运骅,李久青.镁合金涂装保护体系失效特性及铬酸盐转化膜的影响[J].腐蚀科学与防护技术,2005(03):169-171. |
| [13] | 赵明,吴树森,罗吉荣,李东南.镁合金磷酸盐-高锰酸盐化学转化处理工艺研究[J].特种铸造及有色合金,2005(06):328-329. |
| [14] | Kouisni L;Azzi M;Dalard F;Maximovitch S .Phosphate coatings on magnesium alloy AM60 Part 2: Electrochemical behaviour in borate buffer solution[J].Surface & Coatings Technology,2005(2/3):239-246. |
| [15] | Song G L;Atrens A;StJohn D.An hydrogen evolution method for the estimation of the corrosion rate of magnesium alloys[A].TMS (The Minerals,Metals & Materials Society),2001:255. |
| [16] | Song G;Atrens A;Stjohn D et al.The electrochemical corrosion of pure magnesium in 1 N NaCl[J].Corrosion Science,1997,39(05):855-875. |
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%