Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/91445
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dc.titleEasy glass formation in La55Ni20Al25 by Bridgman solidification
dc.contributor.authorLi, Y.
dc.contributor.authorNg, S.C.
dc.contributor.authorLu, Z.P.
dc.contributor.authorFeng, Y.P.
dc.date.accessioned2014-10-09T08:18:10Z
dc.date.available2014-10-09T08:18:10Z
dc.date.issued1998-03
dc.identifier.citationLi, Y.,Ng, S.C.,Lu, Z.P.,Feng, Y.P. (1998-03). Easy glass formation in La55Ni20Al25 by Bridgman solidification. Materials Letters 34 (3-6) : 318-321. ScholarBank@NUS Repository.
dc.identifier.issn0167577X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/91445
dc.description.abstractEasy glass-forming alloy La55Ni20Al25 was subjected to Bridgman unidirectional solidification at growth velocities between 0.34 mm/s and 4.5 mm/s through a temperature gradient of 15 K/mm. Results of X-ray diffraction confirm that the sample grown at 4.5 mm/s was fully amorphous whereas sample grown at 2.3 mm/s was partially amorphous with some crystalline structure and sample grown at 0.34 mm/s was basically crystalline. DSC results showed typical glass transition and crystallization for samples grown at 4.5 mm/s and 2.3 mm/s, in contrast to no transformation characterized by a flat line for sample grown at 0.34 mm/s. Values of Tg and Tx obtained from the fully amorphous sample grown at 4.5 mm/s are 493 K and 557 K respectively, resulting in a temperature span of 64 K between these two temperatures. These results confirm a critical cooling rate of 62.5 K/s for glass formation in La55Al25Ni20 alloy and this rate is compared with critical cooling rates obtained by other methods for the same alloy as well as for other easy glass forming materials. © 1998 Elsevier Science B.V.
dc.sourceScopus
dc.subjectBridgman solidification
dc.subjectGlass
dc.subjectLa55Ni20Al25
dc.typeArticle
dc.contributor.departmentCHEMICAL ENGINEERING
dc.contributor.departmentPHYSICS
dc.contributor.departmentMATERIALS SCIENCE
dc.description.sourcetitleMaterials Letters
dc.description.volume34
dc.description.issue3-6
dc.description.page318-321
dc.description.codenMLETD
dc.identifier.isiutNOT_IN_WOS
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