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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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Multi-year application of WRF-CAM5 over East Asia-Part I: Comprehensive evaluation and formation regimes of O3 and PM2.5
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Chemical processing of water-soluble species and formation of secondary organic aerosol in fogs
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Cellulose produced by Gluconacetobacter xylinus strains ATCC 53524 and ATCC 23768: Pellicle formation, post-synthesis aggregation and fiber density
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Mineral formation during bacterial sulfate reduction in the presence of different electron donors and carbon sources
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Cubic phases in phosphatidylethanolamine dispersions: Formation, stability and phase transitions
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The effect of oxygenated fuel properties on diesel spray combustion and soot formation
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PAH formation in counterflow non-premixed flames of butane and butanol isomers
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Ignition enhancement and NO formation of NH3/air mixtures by non-equilibrium plasma discharge
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Oxidation versus salt-film formation: Competitive adsorption on a series of metals from first-principles
According to the article, chloride ion is known to accelerate corrosion in numerous metallic systems, although it is not well understood why. Using first-principles methods, such as density functional theory, it is possible to directly compute the energy of adsorption for chloride, and, using a thermodynamic framework based on statistical mechanics, to predict the environmental conditions under which it may be anticipated that chloride could displace other ions (such as hydroxide, incipient oxide, or other potentially corrosion inhibiting species) from the bare metal and/or oxide surface. By reviewing the literature, as well as performing some original density functional theory calculations, the authors present in this work the dependence of the surface coverage for H2O, OH, O and Cl on the electrochemical potential, pH and chloride concentration for a number of metallic systems, including nickel, iron, magnesium and aluminum, to predict the fundamental surface processes that may related to the role of chloride in potentially interfering with processes such as repassivation and metal dissolution. It is found that under some conditions certain metals can possess zones of mutual stability where both chloride and hydroxide may be coadsorbed, whereas other metals appear to have intrinsic resistance to chloride adsorption. Variations among the available first-principles adsorption energies obtained from different sources indicate that uncertainty analysis is necessary moving forwards. An analogous approach could be taken to consider the interaction of chloride with clean and defective oxide and/or hydroxylated surfaces.
Valence and metal/silicate partitioning of Mo: Implications for conditions of Earth accretion and core formation
Abstract not provided
Effect of ethanol blending on particulate formation from premixed combustion in spark-ignition engines
Not provided.