Preparation of FeB by SHS (Self Propagating High Temperature Synthesis)

descriptionPublicationkeyboard_double_arrow_right Article 31 Jul 2008 English Publisher:Korean Ceramic SocietyJournal:Journal of the Korean Ceramic Society, volume 45, pages 418-422 (issn: 1229-7801,

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Authors: Chang-Yun Shin; Chang-Whan Won;

doi: 10.4191/kcers.2008.45.7.418

Preparation of FeB by SHS (Self Propagating High Temperature Synthesis)

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Abstract

The preparation of FeB by SHS in B₂O₃-Mg-Fe-Fe₃O₄ system was investigated in this study. In the preparation of FeB, the effects of the initial pressure of inert gas in reactor, the content of Mg and Fe₃O₄ in mixture on the reactivity and reaction products was investigated. The minimum initial pressure of inert gas in reactor for SHS reaction in this system was 25 atm, and as the pressure increased, the concentration of unreacted Mg decreased and combustion temperature increased. At the initial inert gas pressure in reactor of 25 atm, the optimum composition for the preparation of pure FeB was 1.5B₂O₃+3.43Mg+1.7Fe+0.1Fe₃O₄. The FeB synthesized in this condition had an irregular shape and the particle size of 5 ㎛.

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