Journal
JOURNAL OF NUCLEAR MATERIALS
Volume 452, Issue 1-3, Pages 434-439Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnucmat.2014.05.067
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Funding
- Department of Energy Idaho Field Office [DE-NE0000538]
- State of North Carolina
- National Science Foundation
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Here we report on the formation of nano ZrO2 particles in Fe-14Cr-1.5Zr alloy powders synthesized by mechanical alloying. The nano ZrO2 particles were found uniformly dispersed in the ferritic matrix powders with an average size of about 3.7 nm, which rendered the alloy powders so stable that it retained nanocrystalline structure after annealing at 900 degrees C for 1 h. The ZrO2 nanoparticles have a tetragonal crystal structure and the following orientation relationship with the matrix: (002)(ZrO2)//(002)(Matrix) and [010](ZrO2)//[120](Matrix). The size and dispersion of the ZrO2 particles are comparable to those of Y-Ti-O enriched oxides reported in irradiation-resistant ODS alloys. This suggests a potential application of the new alloy powders for nuclear energy applications. (C) 2014 Elsevier B. V. All rights reserved.
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