Influence of Similar Atom Substitution on Glass Formation in (La-Ce)-Al-Co Bulk Metallic Glasses

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dc.creatorLi, Ran
dc.creatorPang, Shujie
dc.creatorMa, Chaoli
dc.creatorZhang, Tao
dc.date2006-12-07
dc.date.accessioned2026-07-07T07:31:36Z
dc.date.available2026-07-07T07:31:36Z
dc.descriptionThe glass-formation range of bulk metallic glasses (BMGs) based on lanthanum and cerium was pinpointed in La-Al-Co, Ce-Al-Co and pseudo-ternary (La-Ce)-Al-Co system respectively by copper mold casting. Through the stepwise substitution of La for solvent Ce in (LaxCe1-x)65Al10Co25 alloys (0<x<1), the fully glassy rods of the (La0.7Ce0.3)65Al10Co25 alloy can be successfully produced up to 25 mm in diameter by tilt-pour casting. Comparing with the glass-forming ability (GFA) of single-lanthanide based alloys, La65Al10Co25 and Ce65Al10Co25, the coexistence of La and Ce with similar atomic size and various valence electronic structure can obviously improve the GFA of (LaxCe1-x)65Al10Co25 BMGs, which can't be explained by the former GFA criteria for BMGs, e.g. atomic size mismatch and negative heats of mixing. A thermodynamic model was proposed to evaluate this substitution effect, which gives a reasonable explanation for the obvious improvement of GFA induced by the coexistence of similar atoms.
dc.description26 pages, 9 figures, 2 tables
dc.identifierhttps://arxiv.org/abs/cond-mat/0612185
dc.identifierhttp://arxiv.org/abs/cond-mat/0612185
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/118810
dc.subjectMaterials Science
dc.titleInfluence of Similar Atom Substitution on Glass Formation in (La-Ce)-Al-Co Bulk Metallic Glasses
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