Competitive reactivity of iron towards boron and silicon in surface treatments with powder mixtures |
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| Authors: | M Carbucicchio A Casagrande G Palombarini |
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| Institution: | (1) Department of Physics, University, Viale delle Scienze, 43100 Parma, Italy;(2) Institute of Metallurgy, Faculty of Industrial Chemistry, University, Viale Risorgimento 4, 40136 Bologna, Italy |
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| Abstract: | The processes occurring at the surface of iron in contact with fluoride-activated B4C-base powder mixtures at 850°C were investigated by substituting the diluent SiC with different silicon compounds. The coatings were analyzed by X-ray diffraction, surface Mössbauer spectroscopy and metallographic techniques. The possibility of passing from iron boriding to iron siliciding was shown, and a mechanism proposed for the process. |
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