Thermal properties of ball-milled nanocrystalline Fe,Co and Cr powders |
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| Affiliation: | 1. Laboratory of Inorganic Materials Chemistry, Chemistry Department, University Badji Mokhtar of Annaba, BP: 12, Annaba 23000, Algeria;2. Laboratory of Magnetism and Spectroscopy of Solids, Department of Physics, University Badji Mokhtar of Annaba, BP: 12, Annaba 23000, Algeria;3. Department of Technology, Faculty of Technology, University 20 Août 1955 of Skikda, B.P.26, Route d''El-Hadaiek, Skikda 21000, Algeria;4. Department of Biology, College of Science, University of Bahrain, PO Box 32038, Bahrain;5. Nanotechnology Centre, University of Bahrain, PO Box 32038, Bahrain;6. Department of Physics, College of Science, University of Bahrain, PO Box 32038, Bahrain |
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| Abstract: | Ball-milled Fe, Co and Cr powders have been investigated by differential scanning calorimetry to study the stored enthalpy and the origin of the enhanced specific heat in these materials. The samples were prepared of high purity powder of 40–50 μm initial particle size and milling times up to 1 month have been applied. The results of calorimetric measurements have been correlated with structural parameters (average grain size and dislocation density) obtained by high resolution X-ray diffractometry. |
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