期刊文献+

添加剂对电镀锌稀土转化膜成膜作用机理的研究 被引量:1

Effects of Additives on Formation Interaction Mechanism of Rare Earth Conversion Coating of Zinc Plating
下载PDF
导出
摘要 采用添加氧化剂和成膜促进剂的化学浸泡法在电镀锌层表面制备稀土转化膜,氧化剂和成膜促进剂的加入,对有效形成高耐蚀性的稀土转化膜起到了至关重要的作用。通过电化学测试、形貌分析以及动力学数据计算,结果表明:H2O2作为氧化剂加入到处理液中,一方面可加快微阴极发生还原反应,另一方面通过发生H2O2的还原反应,促进微阴极区pH上升,有利于形成富含铈的转化膜;成膜促进剂的加入可改善膜层的外观质量,其加入的实质是通过有效降低成膜三个反应阶段的表观活化能,从而实现对转化膜生长的促进。 It was of great significance to the efficient formation of rare earth conversion coating with high corrosion resistance by using chemical immersion method through the addition of oxidant and promoter of coating-formation for the preparation of rare earth conversion coating on the surface of zinc plating.The results show that through the electrochemistry test,morphology analysis and dynamics data calculation,reductive reaction at micro-cathode is speeded up by the addition of oxidant H2O2 into the treatment solution,and promoting the increase of pH within the micro-cathode region,which is favorable to the formation of conversion coating with high content of Ce.The addition of coating-formation promoter can improve the shape quality of the coating,whose essence is to lower effectively the apparent activation energy for coating-formation reaction with three stages,giving rise to the realization of promotion for conversion coating's growing.
出处 《材料工程》 EI CAS CSCD 北大核心 2011年第5期48-52,共5页 Journal of Materials Engineering
关键词 氧化剂 成膜促进剂 稀土转化膜 成膜机理 oxidant accelerator rare earth conversion coating formation mechanism
  • 相关文献

参考文献9

  • 1MONTERMOR M F, FERREIRA M G S. Analytical character ization of silane films modified with cerium activated nanoparticles and its relation with the corrosion protection of galvanized steel substrates [J]. Progress in Organic Coatings, 2008, 63(3):330 -337.
  • 2BLIN F, KOUTSOUKOS P, KLEPETSIANIS P, et al. The corrosion inhibition mechanism of new rare earth cinnamate compounds: electrochemical studies [J]. Electrochimica Acta, 2007, 52(21) :6212--6220.
  • 3MONTERMOR M F, SIMOES A M,CARMEZIM M J. Characterization of rare-earth conversion films formed on the AZ31 mag nesium alloy and its relation with corrosion protection [J]. Applied Surface Science, 2007, 253(16):6922-6931.
  • 4MOTTE C, MAURY N, OLIVIER M G, et al. Cerium treatments for temporary protection of eleetroplated steel [J].Surface and Coatings Technology, 2005, 200(7) : 2366 - 2375.
  • 5HINTON B R W. The inhibition of aluminum alloy corrosion by rare earth metal cations [J]. Corrosion Australas, 1985, 10(3): 12-17.
  • 6ANDRE D, JEAN P. Study of the deposition of cerium oxide by conversion on to aluminium alloys [J].Surface and Coatings Technology, 2005, 194(1):1- 9.
  • 7李久青,田虹,卢翠英.铝合金稀土转化膜的碱性成膜工艺[J].材料保护,1998,31(9):11-13. 被引量:15
  • 8MANSFELD F. Surface modification of aluminum alloys in molten salts containing CeCl3[J]. Thin Sold Films, 1995, 270 (1): 417-421.
  • 9FERREIRA M G S, DUARTER R G, MONTEMOR M F, et al. Silanes and rare earth salts as chromate replacers for pre treatments on galvanized steel [J].Electrochimica Acta, 2004, 49 (17) ,2927--2935.

二级参考文献4

共引文献14

同被引文献117

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部