Mechanically driven syntheses of carbides and silcides |
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Authors: | G Le Caër E Bauer-Grosse A Pianelli E Bouzy P Matteazzi |
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Affiliation: | (1) Laboratoire de Science et Génie des Matériaux Métallaiques, associé au CNRS U.A., 159, Ecole des Mines, F-54042 Nancy Cedex, France;(2) Istituto di Chimica, Universita degli Studi di Udine, Viale Ungheria 43, I-33100 Udine, Italy |
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Abstract: | Most metal carbides or slicides may be synthesized at room temperature, by ball milling mixtures of elemental powders for some tens of hours with a vibratory mill. Both stable and metastable compounds containing a high density of defects can be obtained. In general, phases stable at low temperatures are synthesized. This observation allows us to confirm recent estimations for the maximum temperature ( 600 K) attained in these powders during mechanical alloying. Exceptions are found for some MSi2 suicides with M = titanium, iron or molybdenum for which both low- and high-temperature phases are formed. |
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