title: Controlled Fabrication of Nanoporous Oxide Layers on Zircaloy by Anodization.
abstract: We have presented a mechanism to explain why the resulting oxide morphology becomes a porous or a tubular nanostructure when a zircaloy is electrochemically anodized. A porous zirconium oxide nanostructure is always formed at an initial anodization stage, but the degree of interpore dissolution determines whether the final morphology is nanoporous or nanotubular. The interpore dissolution rate can be tuned by changing the anodization parameters such as anodization time and water content in an electrolyte. Consequently, porous or tubular oxide nanostructures can be selectively fabricated on a zircaloy surface by controlling the parameters. Based on this mechanism, zirconium oxide layers with completely nanoporous, completely nanotubular, and intermediate morphologies between a nanoporous and a nanotubular structure were controllably fabricated.
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon, 305-701, Republic of Korea.
authors.forename: Yang Jeong
authors.initials: YJ
authors.lastname: Park
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon, 305-701, Republic of Korea.
authors.forename: Jun Mok
authors.initials: JM
authors.lastname: Ha
authors.affiliation: Nanomaterials Research Group (NRG), Physics Division (PD), PINSTECH, Islamabad, 45650, Pakistan.
authors.forename: Ghafar
authors.initials: G
authors.lastname: Ali
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon, 305-701, Republic of Korea.
authors.forename: Hyun Jin
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Department of Nuclear Engineering, Khalifa University of Science, Technology and Research, Abu Dhabi, 127788, United Arab Emirates.
authors.forename: Yacine
authors.initials: Y
authors.lastname: Addad
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong, Yuseong, Daejeon, 305-701, Republic of Korea. socho@kaist.ac.kr.
authors.forename: Sung Oh
authors.initials: SO
authors.lastname: Cho
keywords: Anodization; Nanopore; Nanotube; Oxide layer; Zircaloy