2001
DOI: 10.1023/a:1004865714352
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Cited by 21 publications
(3 citation statements)
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“…10 However, Cu-Ni-Fe alloys present a two-phased microstructure (a Cu-rich phase and a Fe-Ni-rich phase) over a large composition range. 12 This chemical inhomogeneity decreases their corrosion resistance because the iron-rich phase is preferentially dissolved during Al electrolysis inducing the formation of iron fluoride corrosion tunnels in the anode scale as recently shown by Beck et al 10 This limitation can be partially circumvented by careful homogenization of the alloy through an appropriate thermal treatment. 10,11 As we have shown recently, highly homogeneous Cu-Ni-Fe alloys can be synthesized by mechanical alloying.…”
mentioning
confidence: 99%
“…10 However, Cu-Ni-Fe alloys present a two-phased microstructure (a Cu-rich phase and a Fe-Ni-rich phase) over a large composition range. 12 This chemical inhomogeneity decreases their corrosion resistance because the iron-rich phase is preferentially dissolved during Al electrolysis inducing the formation of iron fluoride corrosion tunnels in the anode scale as recently shown by Beck et al 10 This limitation can be partially circumvented by careful homogenization of the alloy through an appropriate thermal treatment. 10,11 As we have shown recently, highly homogeneous Cu-Ni-Fe alloys can be synthesized by mechanical alloying.…”
mentioning
confidence: 99%
“…Las curvas DSC muestran, en el rango de temperaturas estudiado, en cada aleación, una reacción exotér-mica (picos 1, 3 y 5) y a mayores temperaturas una reacción endotérmica (picos 2, 4 y 6). De acuerdo a los antecedentes establecidos en la literatura (López et al, 1996;Li et al, 2001;Servant, 2001;Reghavan, 2004), los picos exotérmicos corresponden a la reacción de formación de la fase estable FeNi 3 (L1 2 ) y los endotérmicos a la disolución de la fase anterior.…”
Section: Resultados Y Discusiónunclassified
“…A 723 K, la fase Ll 2 se encuentra en equilibrio con la fase fcc desordenada, en dos diferentes rangos de composiciones (γ 1 y γ 2 ). En aleaciones de Cu-30Ni-25Fe, Li et al (2001) encuentra que ocurre descomposición espinodal cuando el material es envejecido sobre 870 K, con estructuras compuestas alternativamente de fases ricas en cobre y fases ricas en (Fe-Ni). Por otra parte, Servant et al, (2001), en aleaciones de Cu-17Ni-3Fe, envejecidas a 773 K durante 2 horas, observó mediante Microscopía Electrónica de Transmisión (MET) precipitados de tamaño nanométrico en la matriz de cobre y en los bordes de grano.…”
Section: Introductionunclassified