Effect of Rare Earth Chloride on Corrosion Resistance of in Situ Phosphatizing Organic Coatings on 6061 Aluminum Alloy
摘 要
原位磷化有机涂层技术是将金属磷化处理和有机涂层的涂覆结合起来, 在一道工序中完成以前多道涂装工序的任务。在原位磷化液中添加不同的稀土(Re)氯化物, 制成磷化有机涂层。通过极化曲线和电化学阻抗测试, 结果表明, 稀土作为磷化促进剂, 稳定性好, 能提高磷化的效率和质量, 原位磷化有机涂层有效地提高了6061铝合金在3.5%NaCl溶液中的耐蚀性能, 且添加0.2%(质量比)LaCl3制备的原位磷化有机涂层的性能最佳, 对铝合金基体具有较好的防护效果。全浸泡试验结果显示, 加入稀土氯化物增强了原位磷化有机涂层与铝合金基体的结合力。
Abstract
In situ phosphatizing of organic coatings is a one-step self-phosphating process, in which the formation of metal phosphate layer on the substrate surface and the curing of organic paint film take place simultaneously instead of multi-step process. In this study, different rare earth(Re) chlorides were incorporated into in situ phosphatizing solution and organic coatings were prepared. Polarization curves and electrochemical impedance spectroscopy (EIS) were used to characterize the characteristics of organic coatings. The results indicate that the rare earth which has good stability as a phosphating accelerator can improve the efficiency and quality of phosphate. In situ phosphatizing organic coatings prepared by incorporating rare earth chloride can improve the corrosion resistance of 6061 aluminum alloy in 3.5% NaCl solution effectively. When 0.2% (mass ratio) LaCl3 was addied to in situ phosphatizing solution, in situ phosphatizing organic coatings had the best performance and a good protection for aluminum alloy substrate. Salt-water immersion test results indicated that the bond between in situ phosphatizing organic coatings and aluminum alloy substrate was enhanced by incorporating rare earth chloride.
中图分类号 TG178
所属栏目 试验研究
基金项目
收稿日期 2011/10/28
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备注张圣麟, 教授, 博士,
引用该论文: ZHANG Sheng-lin,YAO Yuan,SUN Fei. Effect of Rare Earth Chloride on Corrosion Resistance of in Situ Phosphatizing Organic Coatings on 6061 Aluminum Alloy[J]. Corrosion & Protection, 2012, 33(10): 880
被引情况:
【1】李文超,张明明,乔静飞,张圣麟, "冷轧钢表面磷化膜和硅烷膜的制备与性能",腐蚀与防护 36, 334-337(2015)
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参考文献
【1】郑顺庆. 漆前表面预处理技术的发展[J]. 表面技术, 2004, 33(1):1-3.
【2】Whitten M C, Burke V J, Neuder H A, et al. Simultaneous acid catalysis and in situ phosphatization using a polyester-melamine paint:A surface phosphatization study[J]. Industrial & Engineering Chemistry Research, 2003, 42(16):3671-3679.
【3】Lin C T. Green chemistry in situ phosphatizing coatings[J]. Progress in Organic Coatings, 2001, 42:226-235.
【4】Whitten M C, Chuang Y Y, Lin C T. Effect of catalyst and pigment on polyester-melamine in situ phosphatizing coating on a cold-rolled steel system[J]. Industrial & Engineering Chemistry Research, 2002, 41(21):5232-5239.
【5】张圣麟, 张小麟. 稀土硝酸盐促进的铝合金锌系磷化成膜过程[J]. 腐蚀与防护, 2008, 29(10):599-601.
【6】吴海江, 杨飞英, 卢锦堂. 热镀锌钢表面稀土转化膜的制备及其耐蚀性研究[J]. 材料保护, 2008, 41(8):28-31.
【7】王均涛, 吴建华, 陈光章. 铝合金稀土转化膜成膜工艺研究[J]. 电化学, 2003, 9(3):350-356.
【8】邝钜炽. 稀土硝酸盐对磷化过程的促进作用[J]. 稀土, 2006, 27(1):80-82.
【9】于兴文, 曹楚南, 林海潮. LY12铝合金表面稀土转化膜腐蚀行为的研究[J]. 中国稀土学报, 2000, 18(3):243-248.
【10】Lin C T, Lin P, Puello F Q. Interfacial chemistry of a single-step phosphate/paint system[J]. Industrial & Engineering Chemistry Research, 1993, 32(5):818-825.
【11】Yu T, Lin C T. Chemical affinity of in-situ phosphatizing reagents on cold-rolled steel[J]. Journal of Physcial Chemisty, 1995, 99(19):7613-7620.
【12】Neuder H, Sizemore C, Kolody M, et al. Molecular design of in situ phosphatizing coatings(ISPCs) for aerospace primers[J]. Progress in Organic Coatings, 2003, 47:225-232.
【13】李恒, 李澄. 纳米SiO2杂化涂层对铝合金耐腐蚀性能的影响[J]. 涂料工业, 2010, 40(9):25-33.
【14】邝钜炽. 锌系磷化的稀土促进成膜机理研究[J]. 稀土, 2006, 27(1):26-29.
【2】Whitten M C, Burke V J, Neuder H A, et al. Simultaneous acid catalysis and in situ phosphatization using a polyester-melamine paint:A surface phosphatization study[J]. Industrial & Engineering Chemistry Research, 2003, 42(16):3671-3679.
【3】Lin C T. Green chemistry in situ phosphatizing coatings[J]. Progress in Organic Coatings, 2001, 42:226-235.
【4】Whitten M C, Chuang Y Y, Lin C T. Effect of catalyst and pigment on polyester-melamine in situ phosphatizing coating on a cold-rolled steel system[J]. Industrial & Engineering Chemistry Research, 2002, 41(21):5232-5239.
【5】张圣麟, 张小麟. 稀土硝酸盐促进的铝合金锌系磷化成膜过程[J]. 腐蚀与防护, 2008, 29(10):599-601.
【6】吴海江, 杨飞英, 卢锦堂. 热镀锌钢表面稀土转化膜的制备及其耐蚀性研究[J]. 材料保护, 2008, 41(8):28-31.
【7】王均涛, 吴建华, 陈光章. 铝合金稀土转化膜成膜工艺研究[J]. 电化学, 2003, 9(3):350-356.
【8】邝钜炽. 稀土硝酸盐对磷化过程的促进作用[J]. 稀土, 2006, 27(1):80-82.
【9】于兴文, 曹楚南, 林海潮. LY12铝合金表面稀土转化膜腐蚀行为的研究[J]. 中国稀土学报, 2000, 18(3):243-248.
【10】Lin C T, Lin P, Puello F Q. Interfacial chemistry of a single-step phosphate/paint system[J]. Industrial & Engineering Chemistry Research, 1993, 32(5):818-825.
【11】Yu T, Lin C T. Chemical affinity of in-situ phosphatizing reagents on cold-rolled steel[J]. Journal of Physcial Chemisty, 1995, 99(19):7613-7620.
【12】Neuder H, Sizemore C, Kolody M, et al. Molecular design of in situ phosphatizing coatings(ISPCs) for aerospace primers[J]. Progress in Organic Coatings, 2003, 47:225-232.
【13】李恒, 李澄. 纳米SiO2杂化涂层对铝合金耐腐蚀性能的影响[J]. 涂料工业, 2010, 40(9):25-33.
【14】邝钜炽. 锌系磷化的稀土促进成膜机理研究[J]. 稀土, 2006, 27(1):26-29.
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