Differential thermal analysis of the Al+20% (Fe-50%B) system |
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Authors: | J Abenojar F Velasco MA Martinez |
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Institution: | Department of Materials Science and Engineering, University Carlos III of Madrid, Av. Universidad, 30. E-28911 Leganes, Spain |
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Abstract: | In the present study, aluminium and mechanically alloyed (36 h) Fe/B (50 wt%) are mixed. Al+20 (wt%) Fe/B mixture has been studied by differential thermal analysis to determine the aluminium quantity that is supposed to melt and afterwards does not solidify as it reacts with Fe/B powder. The different areas between endothermic reaction (melting peak) and exothermic reaction (solidification peak) allow in knowing the quantity of aluminium that reacts with Fe/B and the amount of intermetallic phases formed at high temperature. In order to follow the process, compacts were sintered at different temperatures (700, 800, 900, 1000 and 1200 °C), in N2/10H2/0.1CH4 atmosphere. Microstructure was evaluated by image analysis and the results obtained by both techniques are compared. |
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Keywords: | Differential thermal analysis Image analysis Intermetallic Borides |
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