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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/23587

Title: Oxidation Behavior of the Y56Al24Co20 Bulk Amorphous Alloy Containing Crystalline Composites at 325-450°C
Authors: H.H. Hsieh;W. Kai;C.Y. Lin;Tsung Shune Chin
Contributors: NTOU:Institute of Materials Engineering
Keywords: Al2O3;Oxidation Kinetics;Y2O3;Y56Al24Co20 Alloy
Date: 2007-03
Issue Date: 2011-10-20T08:06:41Z
Publisher: Materials Science Forum
Abstract: Abstract:The oxidation behavior of Y56Al24Co20 bulk metallic glass containing ~4.2% Y-rich particles was studied over the temperature range of 325-450oC in dry air. The results showed that the oxidation kinetics of the alloy followed the parabolic rate law at T≤375oC, with rate constants generally increased with temperature. Conversely, para-linear kinetics were observed at higher temperatures (T≥400oC). The scales formed on the Y-base amorphous composite were temperature dependent, consisting of exclusively yttrium oxides (Y2O3) at T≤375oC and of mostly Y2O3 and alumina (Al2O3) at temperatures. No evidence of any cobalt-containing oxide was found in the scale.
Relation: 539-543, pp.2117-2122
URI: http://ntour.ntou.edu.tw/handle/987654321/23587
Appears in Collections:[材料工程研究所] 期刊論文

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