2012
DOI: 10.1016/j.corsci.2011.10.038
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Corrosion behaviour of AZ91D and AM50 magnesium alloys with Nd and Gd additions in humid environments

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Cited by 114 publications
(55 citation statements)
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“…This suggested a stronger galvanic couple between the Al-Mn inclusions and the a-Mg phase. In case of Al-Mn-Gd and Al 2 Gd the potential values were slightly higher than those corresponding to Nd-containing intermetallics (Arrabal et al, 2012a andArrabal et al, 2012b). These values were also comparable to those obtained by Liu, 2009c and for Al-RE intermetallics formed on the AM60 alloy modified with cerium or lanthanum.…”
Section: Microstructural Characterizationsupporting
confidence: 69%
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“…This suggested a stronger galvanic couple between the Al-Mn inclusions and the a-Mg phase. In case of Al-Mn-Gd and Al 2 Gd the potential values were slightly higher than those corresponding to Nd-containing intermetallics (Arrabal et al, 2012a andArrabal et al, 2012b). These values were also comparable to those obtained by Liu, 2009c and for Al-RE intermetallics formed on the AM60 alloy modified with cerium or lanthanum.…”
Section: Microstructural Characterizationsupporting
confidence: 69%
“…Table 3 shows the galvanic corrosion rates calculated from gravimetric (P W ) and electrochemical measurements (P M : mixed potential theory, P ZRA : zero resistance ammeter). All measurements gave corrosion rates that were 1 to 2 orders of magnitude higher than those of uncoupled alloys (Arrabal et al, 2012a;Arrabal et al, 2012b;Arrabal et al, 2012c), indicating the severity of the testing conditions. The corrosion rates calculated by the mixed potential theory were always lower than those obtained by the other methods.…”
Section: Zra Measurementsmentioning
confidence: 99%
“…Soliman & AbuZied (2009) mencionan que como la temperatura de compensación de estos materiales es próxima a la temperatura ambiente se anula la imanación, logrando un campo coercitivo alto, lo que garantiza la estabilidad de los dominios magnéticos, siendo este un requisito para el almacenamiento de información por medios magneto-ópticos. Arrabal et al (2012) demostraron que la utilización de TR como el Gd o el Nd mejoran las propiedades anticorrosivas de la aleación AM50. Rojas et al (2012) estudiaron la composición en forma de polvo de T b 0.257−x N d x F e 0.743 con x=0, 0.125, 0.257, aleada de manera mecánica y reportaron una fase amorfa al disminuir la temperatura, presentando un comportamiento ferromagnético y tendencia al paramagnetismo con el incremento de la temperatura.…”
Section: Introductionunclassified
“…α-Fe, y las compararon con las obtenidas cuando se sustituyó el Nd por el Y y Sm, encontraron que las interacciones de intercambio debido a la disminución de la anisotropía magnetocristalina mejoran. Investigaciones recientes demuestran además (Arrabal et al, 2012) que la utilización de Nd o Gd mejora hasta en un 43% las propiedades anticorrosivas de las aleaciones de Mg-Al-Mn. Dancygier (1987) estudio el sistema Tb x Fe 1-x reportando que para x=0.257 se obtiene la mejor coercitividad convirtiendo estos materiales útiles para aplicaciones como medios de memoria magné-tica.…”
Section: Introductionunclassified