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Oxidation of a novel chromium coating with CeO2 dispersions
Zhu, L; Peng, X; Yan, J; Wang, F
Corresponding AuthorPeng, X(xpeng@imr.ac.cn)
2004-12-01
Source PublicationOXIDATION OF METALS
ISSN0030-770X
Volume62Issue:5-6Pages:411-426
AbstractChromium coatings have been in widespread use to enhance the high-temperature oxidation resistance of low-alloy steely since the 1950s [Samuel and Lockington, Metal Treatment and Drop forgeing 18, 354 (1951); Sully and Brandes, Chromium, 2nd edn. Butterworths, London 1967]. In this work, a novel CeO2-dispersed chromium coating with a fine-grain structure was manufactured on a mild-carbon steel by Prior composite electrodeposition of Ni with CeO2 particles, followed by chromizing using a conventional halide activate, pack-cementation method. For comparison, chromizing was also performed on the carbon steel and on the one with Ni-plating pretreatment. Cyclic oxidation at 840degreesC for 120 h showed that among the three various samples chromized, the CeO2-dispersed chromium coating exhibited the best oxidation resistance, while the worst for the coating on the carbon steel The samples after oxidation were investigated using X-ray diffraction (XRD), scanning-electron microscopy equipped with energy dispersive X-ray analysis (SEMI/EDAX) and electron-probe microanalysis (EPMA). The results indicated that although all three coatings grew chromia scales during oxidation, the one formed on the CeO2-modified coating Was thinner, denser and had a fine-grain structured Moreover, the formation of "Kirkendall" voids and new precipitates, which occurred during oxidation below the scale in the chromium coating on the Ni-plated sample, was prevented in the presence of CeO2 particles in the coating The CeO2 effects on the coating formation and the coating oxidation behavior are discussed in detail.
Keywordelectrodepostion chromizing CeO2-dispersed chromizing coating mild-carbon steel high-temperature oxidation reactive-element effect
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000226001700007
PublisherKLUWER ACADEMIC/PLENUM PUBL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81976
Corresponding AuthorPeng, X
AffiliationChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhu, L,Peng, X,Yan, J,et al. Oxidation of a novel chromium coating with CeO2 dispersions[J]. OXIDATION OF METALS,2004,62(5-6):411-426.
APA Zhu, L,Peng, X,Yan, J,&Wang, F.(2004).Oxidation of a novel chromium coating with CeO2 dispersions.OXIDATION OF METALS,62(5-6),411-426.
MLA Zhu, L,et al."Oxidation of a novel chromium coating with CeO2 dispersions".OXIDATION OF METALS 62.5-6(2004):411-426.
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