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Decomposition of a supersaturated Al-22 at.% Ag alloy isothermally reacted at 350 °C in the α+γ two-phase field was investigated using various transmission electron microscopy techniques. The alloy was found to undergo both nucleation and growth of γ plates and spinodal decomposition. The interaction between the two mechanisms of phase decomposition caused an accumulation of Ag to develop in the matrix...
This paper systematically demonstrates that energy-filtered transmission electron microscope (EFTEM) images of a planar interface between two single crystals have increased compositional contrast and decreased residual diffraction contrast when the sample is oriented so that the electron beam is parallel to the interface, but not directly on a zone axis. This off-axis orientation reduces diffraction...
This contribution uses Cr2p and 3p binding energies (BEs) determined by X-ray photoelectron spectroscopy (XPS) to distinguish Cr III sorbed to different mica sorption sites. The results were used to better understand mechanisms for coupled sorption-reduction of Cr (aq)VI by ferrous micas. The research is important because 1. Cr contamination is a...
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