开发了一种可以取代铬酸盐处理技术的环氧富镁底漆,对铝合金材料提供牺牲阳极保护.通过对镁粉的表面处理和配方优化,获得了贮存稳定、便于喷涂的富镁底漆；通过涂层基本性能测试、盐雾试验、金相显微镜观察确定了镁粉的合适用量,研究了镁粉细度对涂层性能的影响,考察了防沉剂的选择和用量对体系贮存稳定性的影响,以及涂层对2024-T3铝合金材料的保护效果.研究表明:镁粉在富镁底漆中合适的PVC为45％左右,粒径小有助于增加其在体系中的添加量；气相SiO2和有机膨润土配合使用可以获得更满意的贮存稳定性；富镁底漆对2024-T3铝合金表现出优越的耐盐雾保护性能.
参考文献
| [1] | 郭增昌,王云芳,王汝敏.航空铝合金防腐保护研究进展[J].材料导报,2005(09):71-75. |
| [2] | SPEIRS K K;WEINSTEIN M;BLIZE R L .Method of producing magnesium-based coating for the sacrificial protection of metals[P].US,3862851,1975-02-28. |
| [3] | Bierwagen, G;Brown, R;Battocchi, D;Hayes, S .Active metal-based corrosion protective coating systems for aircraft requiring no-chromate pretreatment[J].Progress in Organic Coatings: An International Review Journal,2010(1/2):48-61. |
| [4] | BHARADWAJ M D;SACHDEV A K;VERBRUGGE M W .Sacrificial coatings for magnesium components[P].US,7713618 B2,2010-05-11. |
| [5] | BIERWAGEN G P;NANNA M E;BATTOCCHI D .Magnesium rich coatings and coating systems[P].US,60/562883,2004-04-16. |
| [6] | BATTOCCHI D;SIMOES A M;TALLMAN D E et al.Comparison of testing solutions on the protection of A1-alloys using Mg-rich primer[J].Corrosion Science,2006,48(10):2226-2240. |
| [7] | Simoes A;Battocchi D;Tallman D;Bierwagen G .Assessment of the corrosion protection of aluminium substrates by a Mg-rich primer: EIS, SVET and SECM study[J].Progress in Organic Coatings: An International Review Journal,2008(3):260-266. |
| [8] | H. Xu;D. Battocchi;D.E. Tallman .Use of Magnesium Alloys as Pigments in Magnesium-Rich Primers for Protecting Aluminum Alloys[J].Corrosion: The Journal of Science and Engineering,2009(5):318-325. |
| [9] | WANG D;BATTOCCHI D;ALLAHAR K N et al.In situ monitoring of a Mg-rich primer beneath a topcoat exposed to prohesion conditions[J].Corrosion Science,2010,52(02):441-448. |
| [10] | Jun Li;Jie He;Bret J. Chisholm .An investigation of the effects of polymer binder compositional variables on the corrosion control of aluminum alloys using magnesium-rich primers[J].Journal of coatings technology and research,2010(6):757-764. |
| [11] | Kerry N. Allahar;Dante Battocchi;Mark E. Orazem .Modeling of Electrochemical Impedance Data of a Magnesium-Rich Primer[J].Journal of the Electrochemical Society,2008(10):143-149. |
| [12] | BIERWAGEN G P;BROWN R;BATTOCCHI D.Observations on the testing of Mg-rich primers for totally chromate—free corrosion protection of aerospace alloys[A].,2009:1-26. |
| [13] | JOHNSON J A.Mechanism rich primer for chrome free protection of aluminum alloys[A].,2007:1-16. |
| [14] | Xiangyu Lu;Yu Zuo;Xuhui Zhao;Yuming Tang;Xingguo Feng .The study of a Mg-rich epoxy primer for protection of AZ91D magnesium alloy[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2011(1):153-160. |
| [15] | LIU L M;XU R Z;SONG G .Corrosion behavior of Mg rich Al coatings in the protection of Al alloys[J].Surface and Coatings Technology,2010,20(05):332-337. |
| [16] | 谱图检索[EB/OL].http://www.360yiqi.com/putu/1430/,2012-8. |
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