Microstructural Evolution during the Sintering of Nanostructured Ceramic Oxides |
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| Authors: | Andrew J Allen Susan Krueger Ganesh Skandan Gabrielle G Long Horst Hahn Helen M Kerch John C Parker Mohammad N All |
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| Affiliation: | Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899;Department of Materials and Nuclear Engineering, University of Maryland, College Park, Maryland 20742;Department of Mechanics and Materials Science, Rutgers University, Piscataway, New Jersey 08855;Department of Materials Science, Technische Hochschule Darmstadt, 64295 Darmstadt, Germany;Office of Basic Energy Sciences, U.S. Department of Energy, Germantown, Maryland 20545;Nanophase Technologies Corporation, Burr Ridge, Illinois 60521 |
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| Abstract: | Using small-angle scattering, together with density measurements, X-ray diffraction, nitrogen adsorption, and both transmission and scanning electron microscopy, the microstructural evolution during sintering in nanostructured ceramic oxides has been studied. The availability of samples with sufficient size and uniformity has permitted absolute calibration of the scattering data and made possible determinations of microstructural parameters and surface areas that are statistically representative of the undisturbed nanophase morphologies. A fully quantitative microstructural model has been developed, and the effects of varying processing parameters during powder synthesis and sintering have been assessed. Predictions are made regarding the achievable sintered full-density microstructures. |
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