Abstract
The microemulsion method was employed in this work for synthesizing nanocrystalline cerium oxide particles. Average nanoparticle sizes of 3.45 nm were produced by these means. XPS determinations indicated that both Ce3+ and Ce4+ are present in the synthesized nanoceria particles, with an average amount of 22.8 % of Ce3+ ions. It was found that the nanocrystalline cerium oxide coatings lead to significant improvements (of 1–2 orders of magnitude) in the high-temperature oxidation resistance of 304 SS. In addition, it was found that by decreasing the nanoparticle mean size from 10 to 3.45 nm, the effect of the coating protection was drastically improved. The experimentally determined parabolic rate constants k p at 1073 and 1273 K for 304 SS indicated a reduction of up to two orders of magnitude when nanoceria coatings with 3.45 nm in mean size were applied. Also, the scale thickness was reduced from 15 to 5 μm when oxidized at 1073 K for 442 h. Coatings with purchased nanoceria particles (10 nm) were not as effective as the coatings with synthesized nanoceria. Apparently, at increasing nanoceria sizes, the oxidation protection is significantly reduced. In addition, it was found that the method of dipping for coating 304 SS does not provide a uniform coverage with nanoceria particles. Fe-rich ‘islands’ develop during high-temperature oxidation indicating that some regions do not exhibit the protection that nanoceria can provide. In contrast, relatively thick-coating regions on the steel substrate exhibit minimal oxidation, and the resultant scale is fine grained and uniform.
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References
Moon DP, Bennett MJ (1989) Mater Sci Forum 43:269
Polman EA, Fransen T, Gellings PJ (1989) J Phys Condens Matter 1:4497
Stringer J (1989) Mater Sci Eng A 120:129
Patil S, Kuiry SC, Seal S, Vanfleet R (2002) J Nanopart Res 4:433
Patil S, Kuiry SC, Seal S (2004) Proc R Soc Lond Ser A 460:3569
Thanneeru R, Patil S, Deshpande S, Seal S (2007) Acta Mater 55:3457
Seal S, Roy SK, Bose SK, Kuiry SC (2000) JOM-e 52, http://www.tms.org/pubs/jurnals/JOM/0001/Seal/Seal-0001.html
Zhang H (2007) Role of nanocrystalline cerium oxide coatings on austenitic stainless steels. University of Wisconsin-Milwaukee, Milwaukee
Lopez HF (2009) High-temperature oxidation resistant nanocoatings on austenitic stainless steels. In: MRS conference proceedings, symposium 5 advanced materials, XVIII international congress on Mats. Res., August 16–20, MRS, Cancun, 1243:21
Morris VN, Farrell RA, Sexton AM, Morris MA (2006) J Phys Conf Ser 26:119
Bouchaud B, Balmain J, Bonnet G, Pedraza F (2013) Appl Surf Sci 268:218
Czerwinski F, Szpunar JA (1996) Thin Solid Films 289:213
Wu Z, Gu L, Li H, Benfield RE, Yang Q, Grandjean D, Li Q, Zhu H (2001) J Phys Condens Matter 13:5269–5284
Deshpande S, Patil S, Kuchibhatla S VNT, Seal S (2005) Appl Phys Lett 87:133113
Tsunekawa SK, Ishikawa K, Li ZQ, Kawazoe Y, Kasuya A (2000) Phys Rev Lett 85:3440
Zhou XD, Huebner W (2001) Appl Phys Lett 79:3512
Roure S, Czerwinski F, Petric A (1994) Oxid Met 42:75
Czerwinski F, Szpunar JA (1997) J Sol–Gel Sci Technol 9:103
Campbell CT, Parker SC, Starr DR (2002) Science 298:811
Duffy DM, Tasker PW (1986) Phil Mag 54:759
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Lopez, H.F., Zhang, H. Nanoceria coating imperfections and their effect on the high-temperature oxidation resistance of a 304 stainless steel. J Mater Sci 49, 277–286 (2014). https://doi.org/10.1007/s10853-013-7702-1
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DOI: https://doi.org/10.1007/s10853-013-7702-1