6061铝合金上硅烷膜的制备与性能
Preparation and Properties of Silane Film on 6061 Aluminium Alloy Surface
摘 要
采用浸涂技术, 在6061铝合金表面制备了γ-氨丙基三甲氧基硅烷膜。采用电化学方法和SEM研究了其在3.5% NaCl溶液中的耐蚀性及形貌。结果表明,当硅烷浓度为3%(体积分数), 溶液pH为12, 室温下水解时间72 h形成的硅烷溶液具有较好的稳定性; 铝合金试样在硅烷溶液中浸涂3 min, 固化温度180 ℃, 固化时间120 min, 其表面形成的硅烷膜的耐蚀性最佳, 表现为腐蚀电流密度降低和腐蚀电位的升高。
硅烷膜
极化曲线
耐蚀性
aluminium alloy
silane film
polarization curve
corrosion resistance
Abstract
The γ-aminopropyltriethoxysilane film was deposited on 6061 aluminium alloy surface. The corrosion resistance of the silane film was investigated in 3.5% NaCl solution, using Tafel polarization curves. The results showed that silane solution was stable when the silane concentration was 3%, pH value was 12 and time of hydrolysis was 72 h at room temperature. When aluminum alloy specimen in silane solution was treated by dip-coating 3 min, curing temperature 180 ℃ and curing time 120 min. the obtained silane films on 6061 aluminium alloy surface had the best corrosion resistance, the corrosion current density reduced and corrosion potential rose.
中图分类号 TG174
所属栏目 试验研究
基金项目
收稿日期 2013/3/12
修改稿日期
网络出版日期
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备注张圣麟(1960-),教授,博士,从事材料腐蚀与防护研究,
引用该论文: LEI Yue,TANG Hong-Wei,ZHANG Sheng-lin. Preparation and Properties of Silane Film on 6061 Aluminium Alloy Surface[J]. Corrosion & Protection, 2014, 35(1): 64
被引情况:
【1】李文超,张明明,雷 越,乔静飞,张圣麟, "氯化铈掺杂对6061铝合金表面硅烷膜性能的影响",腐蚀与防护 36, 832-835(2015)
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【3】孙宝德,李克. 铝及铝合金防腐蚀表面处理技术的研究现状与发展[J]. 腐蚀与防护,1998,19(5):195-198.
【4】闫星宇,白术波,肖围. 纳米SiO2协同稀土铈对旅馆表面硅烷膜的耐蚀性研究[J]. 电镀与环保,2010,30(3):36-40.
【5】PALANIVEL V,ZHU D,VAN Ooij W J. Nanoparticle-filled silane films as chromate replacements for aluminium alloys[J]. Prog Org Coat,2003,47:384-392.
【6】HINTON B R. Corrosion inhibition with rare earth metal salts[J]. Journal of Alloys and Compounds,1992,180(1):15-19.
【7】周丽. LY12 铝合金表面防腐蚀工艺[J]. 腐蚀与防护, 2012,33(9): 810-812.
【8】王雪明,李爱菊. 金属表面制备KH-560硅烷膜涂层的工艺研究[J]. 中国表面工程,2004,17(6):27-31.
【9】胡会利,陈丽娇. 表面转化膜五铬化技术的研究动向[J]. 腐蚀与防护,2009,30(10):727-731.
【10】SUBRAMANIAN V,VAN O W J. Silane based metal pretreatments as alternatives to chromating[J]. Surface Engineering,1999,15(2):1-5.
【11】Child T,Van O W J. Application of silane technology to prevent corrosion of metals and improve paint adhesion[J]. Trans IMF,1999,77(2):64-70.
【12】吴海江,卢锦堂,陈锦虹. 热镀锌钢板表面硅烷耐蚀性能的初步研究[J]. 腐蚀与防护,2006,27(1):14-17.
【13】徐溢,王楠,张小风,等. 直接用作金属表面新型防护涂层的硅烷偶联剂水解效果分析[J]. 腐蚀与防护,2000,21(4):157.
【14】CHICO B,GALVAN J C. Electrochemical impedance spectroscopy study of the effect of curing time on the early barrier properties of silane systems applied on steel substrates[J]. Progress in Organic Coating,2007,60:45-53.
【15】季献武,时士峰,肖嵘,等. 硅烷处理对涂层/金属体系耐蚀性能的影响[J]. 腐蚀与防护, 2012,33(10): 1081-1086.
【16】MONTEMOR M F,FERREIRA M G S. Analytical and microscopic characterization of modified bis-[triethoxysilylpropyl] tetrasulphide silane films on magnesium AZ31 substrates[J]. Progress in Organic Coating,2007,60:228-237.
【17】韩丽华,马国庆. 镀锌层表面KH-560硅烷膜耐蚀性能研究[J]. 材料工程,2010,6:45-49.
【18】ZHU D Q,WIM J O. Corrosion protection of AA 2024-T3 by bis-[3-(triethoxysilyl)propyl] tetrasulfide in neutral sodiumchloride solution[J]. Corrosion Science,2003,45:2163-2175.
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