A high-throughput investigation of Fe-Cr-Al as a novel high-temperature coating for nuclear cladding materials

被引：27
作者：
Bunn, Jonathan Kenneth [1 ,2 ]
Fang, Randy L. [1 ,2 ]
Albing, Mark R. [1 ,2 ]
Mehta, Apurva [3 ]
Kramer, Matthew J. [4 ]
Besser, Matthew F. [4 ]
Hattrick-Simpers, Jason R. [1 ,2 ]
机构：
[1] Univ S Carolina, Dept Chem Engn, Columbia, SC 29208 USA
[2] Univ S Carolina, Smart State Ctr Strateg Approaches Generat Elect, Columbia, SC 29208 USA
[3] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA
[4] Iowa State Univ, Ames Lab, Ames, IA 50011 USA
来源：
NANOTECHNOLOGY | 2015年 / 26卷 / 27期
关键词：
high-throughput materials science; oxidation resistance; big data; in situ synchrotron diffraction; nuclear cladding materials; X-RAY-DIFFRACTION; MATERIALS LIBRARIES; FECRAL ALLOY; WATER-VAPOR; COMBINATORIAL; OXIDATION; SCALES; IDENTIFICATION; SPECTROSCOPY; BEHAVIOR;
D O I：
10.1088/0957-4484/26/27/274003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High-temperature alloy coatings that can resist oxidation are urgently needed as nuclear cladding materials to mitigate the danger of hydrogen explosions during meltdown. Here we apply a combination of computationally guided materials synthesis, high-throughput structural characterization and data analysis tools to investigate the feasibility of coatings from the Fe-Cr-Al alloy system. Composition-spread samples were synthesized to cover the region of the phase diagram previous bulk studies have identified as forming protective oxides. The metallurgical and oxide phase evolution were studied via in situ synchrotron glancing incidence x-ray diffraction at temperatures up to 690 K. A composition region with an Al concentration greater than 3.08 at%, and between 20.0 at% and 32.9 at% Cr showed the least overall oxide growth. Subsequently, a series of samples were deposited on stubs and their oxidation behavior at 1373 K was observed. The continued presence of a passivating oxide was confirmed in this region over a period of 6 h.
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页数：9
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