Crack Modification in Rare Earth Based Conversion Coatings

Document Type : Review paper

Authors

Surface coating and Corrosion Department, Institute for Color Research and Technology, P. O. Box: 16765-654, Tehran, Iran.

Abstract

Corrosion protection of metal substrates has been a researcher's concern for many years. Accordingly, various techniques are used to enhance the functionality of metals and improve their resistance. This research focused on conversion coatings due to their uniform film formation on metal surfaces, better interlayer adhesion, and easier application. These coatings act as a physical barrier between the substrate and the environment, and in addition to protecting against corrosion, by increasing surface energy, they improve the organic coating's adherence to the metal substrate. In recent years, many attempts have been made to upgrade the conversion coating's properties on metal surfaces by adding various additives. In this regard, additives in the form of rare earth elements (due to compatibility with the environment) were added to the conversion coating to increase its resistance to corrosion. However, the main issue with these coatings is producing small cracks in the final coating. Therefore, in this paper, the approach is to eliminate the cracks investigated.

Keywords

Main Subjects

References

1.   Mohammadi A, Gharaguzlu M, allahkaram SR. A review on improving the corrosion resistance of 316l stainless steel by coating with nanoparticles of chitosan/gelatin using electrophoretic deposition method. J stud color world. 2023;12:4. https://dorl.net/dor/20.1001.1.225 17278 .1401.12.4.3.4.
2.   Samadi Najibzad A, Amini R, Rostami M, Kardar P, Fedel M. Active corrosion performance of magnesium by silane coatings reinforced with polyaniline/praseodymium, Prog Org Coat. 2020;140:105504. https://doi.org/10.1016/j. porgcoat.2019.105504.
3.   Mahmoudi R, Kardar P, Arabi AM, Amini R, Pasbakhsh P. Acid-modification and praseodymium loading of halloysite nanotubes as a corrosion inhibitor, Appl Clay Sci. 2019;184:105355. https://doi.org/10.1016/j.clay.2019. 105355.
4.   Raj R, Morozov Y, Calado LM, Taryba MG, Kahraman R, Shakoor A, Montemor MF. Calcium carbonate particles loaded with triethanolamine and polyethylenimine for enhanced corrosion protection of epoxy coated steel, Corr Sci. 2019;319:801. https://doi.org/10.1016/j.corsci. 2020.108548.
5.   Dastgheib A, Mohammadzadeh Attar MR, Zarebidaki A. Evaluation of corrosion inhibition of mild steel in 3.5 wt% nacl  solution by cerium nitrate, Metal Mater Inter. 2019;26:1363. https://doi.org/10.1007/s12540-019-00432-x.
6.   Bahremand F, Shahrabi T, Ramezanzadeh B. Epoxy coating anti-corrosion properties enhancement via the steel surface treatment by nanostructured samarium oxide-poly-dopamine film, J Hazard Mater. 2021;403:123722. https://doi.org/10.1016/j.jhazmat.2020.123722.
7.   Saji VS. Organic conversion coatings for magnesium and its alloys, J Ind Engin Chemis. 2019;75:20.  https:// doi.org/10.1016/j.jiec.2019.03.018.
8.   Nicolo AD, Paussa L, Gobessi A, Lanzutti A, Cepek C, Andreatta F, Fedrizzi L. Cerium conversion coating and solegel multilayer system for corrosion protection of AA6060, Surf Coat Technol. 2016;287:33. https:// doi.org/10.1016/j.surfcoat.2015.12.059.
9.   Zhang K, Zhang M, Qiao J, Zhang S. Enhancement of the corrosion resistance of zinc-aluminum-chromium coating with cerium nitrate, J Alloys Compd. 2017;692:46. https:// doi.org/10.1016/j.jallcom.2016.05.182.
10.  Mahidashti Z, Shahrabi T, Ramezanzadeh B. A new strategy for improvement of the corrosion resistance of a green cerium conversion coating through thermal treatment procedure before and after application of epoxy coating, Appl Surf Sci. 2016;390:623. https://doi.org/10.1016 /j.apsusc.2016.08.160.
11.  Pinc W, Yu P, O'Keefe M, Fahrenholtz W. Effect of gelatin additions on the corrosion resistance of cerium based conversion coatings spray deposited on Al 2024-T3, Surf Coat Technol. 2009;203:23. https://doi.org/10.1016/j. surfcoat. 2009.05.019.
12.  Lin CS, Fang SK. Formation of cerium conversion coatings on az31 magnesium alloys, J Electrochem Soc. 2005;152:B54. https://doi.org/10.1149/1.1845371.
13.  Li L, Lei J, Yu S, Tian Y, Jiang Q, Pan F. Formation and characterization of cerium conversion coatings on magnesium alloy, J Rare Earths. 2008;26:383. https://doi.org/10.1016/S1002-0721(08)60101-5.
14.  Lin CS, Li WJ. Corrosion resistance of cerium-conversion coated AZ31 magnesium alloys in cerium nitrate solutions, Mater Trans.2006;47:1020.  https://doi.org/10.2320/ mate rtrans.47.1020.
15.  Chen L, Chen C, Wang N, Wang J, Deng L. study of cerium and lanthanum conversion coatings on az63 magnesium alloy surface. Rare Metal Mater. Eng.2015;44:333. https://doi.org/10.1016/S1875-5372(15)30030-8. 
16.  Montemor MF, Simões AM, Carmezim MJ. Characterization of rare-earth conversion films formed on the AZ31 magnesium alloy and its relation with corrosion protection, Appl Surf Sci. 2007;253:6922. https://doi.org/10.1016/j.apsusc.2007.02.019.
17.  Yu X, Li G. XPS study of cerium conversion coating on the anodized 2024 aluminum alloy. J Alloys Compds. 2004;364:193. https://doi.org/10.1016/S0925-8388(03)00502-4.
18.  Castano CE, Maddela S, O’Keefe MJ, Wang YM. A comparative study on the corrosion resistance of cerium-based conversion coatings on az91d and az31b magnesium alloys, ECS Trans. 2012;41:3. https:// doi.org/10.1149/1.3696866.
19.  Hassannejad H, Shahrabi T, Malekmohammadi F, Shanaghi A, Aliofkhazraei M, Oskuie A. Effect of cerium doping on corrosion resistance of amorphous silicaetitanium sol-gel coating, Curr Appl Phys. 2010;10:1022. https://doi.org/10.1016/j.cap.2009.12.033.
20.  Hassannejad H, Moghaddasi M, Saebnoori E, Rabiei A. Microstructure, deposition mechanism and corrosion behavior of nanostructured cerium oxide conversion coating modified with chitosan on AA2024 aluminum alloy, J Alloys Compd. 2017;725:968.  http://dx.doi. org/10.1016/j.jallcom.2017.07.253.
21.  Saei E, Ramezanzadeh B, Amini R, Salami M. Effects of combined organic and inorganic corrosion inhibitors on the nanostructure cerium based conversion coating performance on AZ31 magnesium alloy: Morphological and corrosion studies, Corr Sci. 2017;127:168. http://dx.doi.org/10.1016/j.corsci.2017.08.017.
22.  Ramezanzadeh M, Sanaei Z, Ramezanzadeh B. The influence of steel surface treatment by a novel eco-friendly praseodymium oxide nanofilm on the adhesion and corrosion protection properties of a fusion-bonded epoxy powder coating, J Ind Engin Chemis. 2018;62:427. https://doi.org/10.1016/j.jiec.2018.01.026.
23.  Nabizadeha M, Sarabia AA, Eivaz Mohammadloo H. Comparative investigation of Cu ion and adipic acid addition on electrochemical and microstructure characteristics of vanadium conversion coating on AZ31 Mg alloy, Surf Coat Technol. 2019;357:1. https://doi.org/ 10.1016/j.surfcoat.2018.10.012.
24. Cai L, Song X, Liu C, Cui L, Li S, Zhang F, Bobby Kannan M, Chen D, Zeng R. Corrosion resistance and mechanisms of Nd(NO3)3 and polyvinyl alcohol organic-inorganic hybrid material incorporated MAO coatings on AZ31 Mg alloy, J Colloid Interface Sci. 2022;630:833. https://doi.org/10.1016/j.jcis.2022.10.087
Journal of Studies in Color World
Volume 14, Issue 2
June 2024
Pages 161-173

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History

  • Receive Date: 26 December 2023
  • Revise Date: 13 March 2024
  • Accept Date: 16 March 2024

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