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三聚磷酸铝和氧化铈改性的环氧富镁涂层对AZ91D镁合金的保护性能研究

DOI: 10.11903/1002.6495.2014.057, PP. 1-6

Keywords: 镁合金,富镁涂层,三聚磷酸铝,氧化铈,保护性能

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Abstract:

通过在环氧涂层中加入镁粉、三聚磷酸铝和氧化铈,制备了对AZ91D镁合金具有优良保护效果的耐蚀涂层,利用Machu测试、电化学阻抗(EIS)和扫描电镜(SEM)等方法研究了三聚磷酸铝和氧化铈对涂层保护性能的影响。结果表明,含50%Mg的环氧富镁涂层经过约2000h浸泡后基体发生腐蚀,涂层失效,而添加10%三聚磷酸铝、0.25%氧化铈的40%Mg富镁涂层经过4488h浸泡后基体仍然未发生明显腐蚀。三聚磷酸铝和氧化铈在富镁涂层中能够显著抑制Mg颗粒的活性,延长镁粉对镁合金基体的保护作用时间,同时也能一定程度上提高涂层的致密性,改善涂层的屏蔽性能,二者的作用相互叠加,有效提高了涂层的综合保护性能。

References

[1]  Kendig M, Mansfeld F, Tsai S. Determination of the long term corrosion behavior of coated steel with A.C. impedance measurements [J]. Corros. Sci., 1983, 23: 317
[2]  Amirudin A, Thierry D. Application of electrochemical impedance spectroscopy to study the degradation of polymer-coated metals[J]. Prog. Org. Coat., 1995, 26: 1
[3]  Battocchi D, Simoes A M, Tallman D E, et al. Electrochemical behaviour of a Mg-rich primer in the protection of Al alloys [J]. Corros. Sci., 2006, 48: 1292
[4]  Lu Q H, Hu Y H. Synthesis of aluminum tri-polyphosphate anticorrosion pigment from bauxite tailings [J]. Trans. Nonferrous Met.Soc. China, 2012, 22: 483
[5]  Nickolova D, Stoyanova E, Stoyachev D, et al. Protective effect in sulfuric acid media of alumina and ceria oxide layers electrodeposited on stainless steel [J]. Surf. Coat. Technol., 2008, 202: 1876
[6]  Scharnagl N, Blawert C, Dietzel W. Corrosion protection of magnesium alloy AZ31 by coating with polyetherimides [J]. Surf. Coat. Technol., 2009, 203: 1423
[7]  Mordike B L, Ebert T. Magnesium-properties-applications-potential [J]. Mater. Sci. Eng., 2007, A302: 37
[8]  Song G L. Recent progress in corrosion and protection of magnesium alloys [J]. Adv. Eng. Mater., 2005, 7: 563
[9]  Hu R G, Zhang S. Recent progress in corrosion protection of magnesium alloys by organic coatings [J]. Prog. Org. Coat., 2012, 73: 129
[10]  Lu X Y, Zuo Y, Zhao X H, et al. The study of a Mg-rich epoxy primer for protection of AZ91D magnesium alloy [J]. Corros. Sci., 2011, 53: 153
[11]  王雅萍, 赵旭辉, 卢向雨等. 二氧化铈对AZ91D镁合金上富镁涂层性能的影响 [J]. 物理化学学报, 2012, 28(2): 407
[12]  Lu X Y, Zuo Y, Zhao X H, et al. The in?uence of aluminum tri-polyphosphate on the protective behavior of Mg-rich epoxy coating on AZ91D magnesium alloy [J]. Electrochim. Acta, 2013, 93: 53
[13]  胡吉明, 张鉴清, 谢德明等. 环氧树脂涂覆LY12铝合金在NaCl溶液中的阻抗模型 [J]. 物理化学学报, 2003, 19(2): 144
[14]  Scully J R, Hensley S T. Lifetime prediction for organic coatings on steel and a magnesium alloy using electrochemical impedance methods [J]. Corros. Sci., 1994, 50: 705
[15]  Zhang J T, Hu J M, Zhang J Q, et al. Studies of water transport behavior and impedance models of epoxy-coated metals in NaCl solution by EIS [J]. Prog. Org. Coat., 2004, 51: 145
[16]  Marchebois H, Keddam M, Savall C, et al. Zinc-rich powder coatings characterisation in arti?cial sea water EIS analysis of the galvanic action [J]. Electrochim. Acta, 2004, 49: 1719
[17]  Hu J M, Zhang J Q, Cao C N. Determination of water uptake and diffusion of Cl - ion in epoxy primer on aluminum alloys in NaCl solution by electrochemical impedance spectroscopy [J]. Prog. Org. Coat., 2003, 46: 273
[18]  Kendig M, Mansfeld F, Tsai S. Determination of the long term corrosion behavior of coated steel with A.C. impedance measurements [J]. Corros. Sci., 1983, 23: 317
[19]  Amirudin A, Thierry D. Application of electrochemical impedance spectroscopy to study the degradation of polymer-coated metals[J]. Prog. Org. Coat., 1995, 26: 1
[20]  Battocchi D, Simoes A M, Tallman D E, et al. Electrochemical behaviour of a Mg-rich primer in the protection of Al alloys [J]. Corros. Sci., 2006, 48: 1292
[21]  Lu Q H, Hu Y H. Synthesis of aluminum tri-polyphosphate anticorrosion pigment from bauxite tailings [J]. Trans. Nonferrous Met.Soc. China, 2012, 22: 483
[22]  Nickolova D, Stoyanova E, Stoyachev D, et al. Protective effect in sulfuric acid media of alumina and ceria oxide layers electrodeposited on stainless steel [J]. Surf. Coat. Technol., 2008, 202: 1876
[23]  Scharnagl N, Blawert C, Dietzel W. Corrosion protection of magnesium alloy AZ31 by coating with polyetherimides [J]. Surf. Coat. Technol., 2009, 203: 1423
[24]  Mordike B L, Ebert T. Magnesium-properties-applications-potential [J]. Mater. Sci. Eng., 2007, A302: 37
[25]  Song G L. Recent progress in corrosion and protection of magnesium alloys [J]. Adv. Eng. Mater., 2005, 7: 563
[26]  Hu R G, Zhang S. Recent progress in corrosion protection of magnesium alloys by organic coatings [J]. Prog. Org. Coat., 2012, 73: 129
[27]  Lu X Y, Zuo Y, Zhao X H, et al. The study of a Mg-rich epoxy primer for protection of AZ91D magnesium alloy [J]. Corros. Sci., 2011, 53: 153
[28]  王雅萍, 赵旭辉, 卢向雨等. 二氧化铈对AZ91D镁合金上富镁涂层性能的影响 [J]. 物理化学学报, 2012, 28(2): 407
[29]  Lu X Y, Zuo Y, Zhao X H, et al. The in?uence of aluminum tri-polyphosphate on the protective behavior of Mg-rich epoxy coating on AZ91D magnesium alloy [J]. Electrochim. Acta, 2013, 93: 53
[30]  胡吉明, 张鉴清, 谢德明等. 环氧树脂涂覆LY12铝合金在NaCl溶液中的阻抗模型 [J]. 物理化学学报, 2003, 19(2): 144
[31]  Scully J R, Hensley S T. Lifetime prediction for organic coatings on steel and a magnesium alloy using electrochemical impedance methods [J]. Corros. Sci., 1994, 50: 705
[32]  Zhang J T, Hu J M, Zhang J Q, et al. Studies of water transport behavior and impedance models of epoxy-coated metals in NaCl solution by EIS [J]. Prog. Org. Coat., 2004, 51: 145
[33]  Marchebois H, Keddam M, Savall C, et al. Zinc-rich powder coatings characterisation in arti?cial sea water EIS analysis of the galvanic action [J]. Electrochim. Acta, 2004, 49: 1719
[34]  Hu J M, Zhang J Q, Cao C N. Determination of water uptake and diffusion of Cl - ion in epoxy primer on aluminum alloys in NaCl solution by electrochemical impedance spectroscopy [J]. Prog. Org. Coat., 2003, 46: 273

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