The effect of Mn and Al dopants on the ƒÒ-FeSi2 stabilization by a two-step route: Mechanical alloying and annealing

J. DESIMONI, J. MARTÍNEZ, S.M. COTES, J. RUNCO AND M.A. TAYLOR

JOURNAL OF ALLOYS AND COMPOUNDS

Elsevier B.V.

Lugar: Amsterdam; Año: 2008

0925-8388

Al andMndopant influence on-FeSi2 phase formationwas studied usingX-ray diffraction and Mössbauer spectroscopy. Samples of Fe1−xRxSi2 (R = Al, Mn with 0.00≤x≤0.12) were prepared by the simultaneous mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. spectroscopy. Samples of Fe1−xRxSi2 (R = Al, Mn with 0.00≤x≤0.12) were prepared by the simultaneous mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. 2 phase formationwas studied usingX-ray diffraction and Mössbauer spectroscopy. Samples of Fe1−xRxSi2 (R = Al, Mn with 0.00≤x≤0.12) were prepared by the simultaneous mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. 1−xRxSi2 (R = Al, Mn with 0.00≤x≤0.12) were prepared by the simultaneous mill of pure Si, Fe and R, under Ar atmosphere followed by an annealing at 1123K during 4 h at 1.33×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. ×10−5 Pa. The results indicate that the addition of Al improved the stabilization of -FeSi2 phase, reducing the amount of -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. -FeSi from 20% to 6%. Also a preferential substitution at the Fe- site II by Mn atoms in -FeSi2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects. by two reactions that account for the milling and the annealing effects. 2 can be inferred fromthe present study. The sequence of phase formation is summarised by two reactions that account for the milling and the annealing effects.