Superior corrosion resistance properties of TiN-based coatings on Zircaloy tubes in supercritical water

Thin films of TiN and Ti0.35Al0.65N nanocomposite were deposited on polished Zircaloy-4 tubes. After exposure to supercritical water for 48h, the coated tubes are remarkably intact, while the bare uncoated tube shows severe oxidation and breakaway corrosion. X-ray diffraction patterns, secondary ele...

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Bibliographic Details
Published inJournal of nuclear materials Vol. 451; no. 1-3; pp. 346 - 351
Main Authors Khatkhatay, Fauzia, Jiao, Liang, Jian, Jie, Zhang, Wenrui, Jiao, Zhijie, Gan, Jian, Zhang, Hongbin, Zhang, Xinghang, Wang, Haiyan
Format Journal Article
LanguageEnglish
Published United States Elsevier B.V 01.08.2014
Subjects
AlN
CLADDING
Coating
COATINGS
CORROSION
MATERIALS SCIENCE
Supercritical Water
TIN
ZIRCALOY
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Summary:Thin films of TiN and Ti0.35Al0.65N nanocomposite were deposited on polished Zircaloy-4 tubes. After exposure to supercritical water for 48h, the coated tubes are remarkably intact, while the bare uncoated tube shows severe oxidation and breakaway corrosion. X-ray diffraction patterns, secondary electron images, backscattered electron images, and energy dispersive X-ray spectroscopy data from the tube surfaces and cross-sections show that a protective oxide, formed on the film surface, effectively prevents further oxidation and corrosion to the Zircaloy-4 tubes. This result demonstrates the effectiveness of thin film ceramics as protective coatings under extreme environments.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
INL/JOU-13-28473
DE-AC07-05ID14517
DOE - NE
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2014.04.010