等离子体电解氧化膜的工艺优化及耐腐蚀性能评价
Technical Optimization and Corrosion Resistance of Plasma Electrolytic Oxidation Films
摘 要
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 4 g/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.
镁合金
动电位极化
电化学阻抗谱
plasma electrolytic oxidation
magnesium alloy
potentiodynamic polarization
EIS
Abstract
The orthogonal design was used to select the optimal plasma electrolytic oxidation process parameters.The micorstructure and composition of the films prepared under the optimization conditions were investigated.The dropping corrosion test,potentiodynamic polarization curves,cyclic voltammetry curves,EIS and immersion corrosion measurements were employed to evaluate the corrosion resistance of AZ31 magnesium alloy and plasma electrolytic oxidation films.The results showed that the optimal parameters of plasma electrolytic oxidation were 4 g/L KOH,20 g/L silicate,300 V,30 minutes.The ceramic oxide films were composed of MgSiO3 and MgSiO4,and the microhardness,dropping corrosion resistance,uniform corrosion resistance and pitting corrosion resistance could be enhanced considerably.
中图分类号 TG174.451 TG146.2
所属栏目 试验研究
基金项目
收稿日期 2008/6/22
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备注陈砺,博导,教授.
引用该论文: WANG Li,CHEN Li,WANG Hong-lin,YAN Zong-cheng,PENG Jia-zhi. Technical Optimization and Corrosion Resistance of Plasma Electrolytic Oxidation Films[J]. Corrosion & Protection, 2009, 30(6): 388～391
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参考文献
【1】Duan Hongping,Yan Chuanwei,Wang Fuhui.Growth process of plasma electrolytic oxidation films formed on magnesium alloy AZ91D in silicate solution[J].Electrochimica Acta,2007,52:5002-5009.
【2】Blawert C,Heitmann V,Dietzel W,et al.Influence of electrolyte on corrosion properties of plasma electrolytic conversion coated magnesium alloys[J].Surface & Coatings Technology,2007,201:8709-8714.
【3】Rudnev V S,Vasilyeva M S,Kondrikov N B,et al.Plasma-electrolytic formation,composition and catalytic activity of manganese oxide containing structures on titanium[J].Applied Surface Science,2005,252:1211-1220.
【4】Yerokhin A L,Nie X,Leyland A,et al.Plasma electrolysis for surface engineering[J].Surface & Coatings Technology,1999,122:73-93.
【5】Teh T H,Berkani A,Mato S,et al.Initial stages of plasma electrolytic oxidation of titanium[J].Corrosion Science,2003,45:2757-2768.
【6】Boinet M,Verdier S,Maximovitch S,et al.Plasma electrolytic oxidation of AM60 magnesium alloy;Monitoring by acoustic emission technique.Electrochemical properties of coatings[J].Surface & Coatings Technology,2005,199:141-149.
【7】王燕华.镁合金微弧氧化膜的形成过程及腐蚀行为研究[D].青岛:中国科学院海洋研究所,2005.
【8】邓姝皓,易丹青,龚竹青,等.镁合金微弧氧化膜的制备工艺研究[J].材料科学与工艺,2007,15(1):22-25.
【9】Gu Wei-Chao,Lv Guo-Hua,Chen Huan,et al.Investigation of morphology and composition of plasma electrolytic oxidation coatings in systems of Na2SiO3-NaOH and (NaPO3)6-NaOH[J].Journal of Materials Processing Technology,2007,182:28-33.
【10】Liang Jun,Guo Baogang,Tian Jun,et al.Effect of potassium fluoride in electrolytic solution on the structure and properties of microarc oxidation coatings on magnesium alloy[J].Applied Surface Science,2005,252:345-351.
【11】Wang L,Nie X.Silicon effects on formation of EPO oxide coatings on aluminum alloys[J].Thin Solid Films,2006,494:211-218.
【12】Wu Zhengqiang,Xia Yuan,Li Guang,et al.Structure and mechanical properties of ceramic coatings fabricated by plasma electrolytic oxidation on aluminized steel[J].Applied Surface Science,2007,253:8398-8403.
【13】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:哈尔滨工业大学应用化学系,2006.
【14】杨培霞,郭洪飞,安茂忠,等.镁合金表面微弧氧化膜耐蚀性能评价[J].航空材料学报,2007,27(3):33-37.
【2】Blawert C,Heitmann V,Dietzel W,et al.Influence of electrolyte on corrosion properties of plasma electrolytic conversion coated magnesium alloys[J].Surface & Coatings Technology,2007,201:8709-8714.
【3】Rudnev V S,Vasilyeva M S,Kondrikov N B,et al.Plasma-electrolytic formation,composition and catalytic activity of manganese oxide containing structures on titanium[J].Applied Surface Science,2005,252:1211-1220.
【4】Yerokhin A L,Nie X,Leyland A,et al.Plasma electrolysis for surface engineering[J].Surface & Coatings Technology,1999,122:73-93.
【5】Teh T H,Berkani A,Mato S,et al.Initial stages of plasma electrolytic oxidation of titanium[J].Corrosion Science,2003,45:2757-2768.
【6】Boinet M,Verdier S,Maximovitch S,et al.Plasma electrolytic oxidation of AM60 magnesium alloy;Monitoring by acoustic emission technique.Electrochemical properties of coatings[J].Surface & Coatings Technology,2005,199:141-149.
【7】王燕华.镁合金微弧氧化膜的形成过程及腐蚀行为研究[D].青岛:中国科学院海洋研究所,2005.
【8】邓姝皓,易丹青,龚竹青,等.镁合金微弧氧化膜的制备工艺研究[J].材料科学与工艺,2007,15(1):22-25.
【9】Gu Wei-Chao,Lv Guo-Hua,Chen Huan,et al.Investigation of morphology and composition of plasma electrolytic oxidation coatings in systems of Na2SiO3-NaOH and (NaPO3)6-NaOH[J].Journal of Materials Processing Technology,2007,182:28-33.
【10】Liang Jun,Guo Baogang,Tian Jun,et al.Effect of potassium fluoride in electrolytic solution on the structure and properties of microarc oxidation coatings on magnesium alloy[J].Applied Surface Science,2005,252:345-351.
【11】Wang L,Nie X.Silicon effects on formation of EPO oxide coatings on aluminum alloys[J].Thin Solid Films,2006,494:211-218.
【12】Wu Zhengqiang,Xia Yuan,Li Guang,et al.Structure and mechanical properties of ceramic coatings fabricated by plasma electrolytic oxidation on aluminized steel[J].Applied Surface Science,2007,253:8398-8403.
【13】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:哈尔滨工业大学应用化学系,2006.
【14】杨培霞,郭洪飞,安茂忠,等.镁合金表面微弧氧化膜耐蚀性能评价[J].航空材料学报,2007,27(3):33-37.
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