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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Solute redistribution and phase stability at FeCr/TiO 2–x interfaces under ion irradiation
Cr diffusion in trilayer thin films of 100 nm Fe–18Cr/125 nm TiO 2–x /100 nm Fe–18Cr deposited on MgO substrates at 500 °C was studied by either annealing at 500 °C or Ni 3+ ion irradiation at 500 °C. Microchemistry and microstructure evolution at the metal/oxide interfaces were investigated using (high-resolution) transmission electron microscopy, energy-dispersive X-ray spectroscopy and electron energy loss spectroscopy. Diffusion of Cr into the O-deficient TiO 2 layer, with negligible segregation to the FeCr/TiO 2–x interface itself, was observed under both annealing and irradiation. Cr diffusion into TiO 2–x was enhanced in ion-irradiated samples as compared to annealed. Irradiation-induced voids and amorphization of TiO 2–x was also observed. The experimental results are rationalized using first-principles calculations that suggest an energetic preference for substituting Ti with Cr in sub-stoichiometric TiO 2 . Furthermore, the implications of these results on the irradiation stability of oxide-dispersed ferritic alloys are discussed.
Corrosion-resistant coatings in molten salts suggested by computational phase-stability diagrams
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Coexistence of Lipid Phases Stabilizes Interstitial Water in the Outer Layer of Mammalian Skin
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Ab initio energetics for modeling phase stability of the Np-U system
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Phase stability of U5Si4, USi, and U2Si3 in the uranium–silicon system
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Towards resolving a long existing phase stability controversy in the Zr-H, Ti-H systems
Abstract not provided
Phase stability of uranium monocarbide under laser irradiation in argon and methane environments
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Thermodynamics of phase stability and disorder in Inter-Lanthanide ternary ABO3 oxides from first principles
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Crystal Structures and Phase Stability of the Li 2 S–P 2 S 5 System from First Principles
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