Journal
SCRIPTA MATERIALIA
Volume 62, Issue 5, Pages 266-269Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.11.013
Keywords
Metallic glass; Amorphous powder; Surface structure; Sintering
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Funding
- Australian Research Council (ARC)
- Ministry of Knowledge Economy, Republic of Korea
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By means of X-ray photoelectron spectrometry depth profile and transmission electron microscopy analysis, this study reveals that amorphous Cu54Ni6Zr22Ti18 powders are enveloped by a thick (similar to 30 nm) oxide skin and a subsequent oxidation-induced partially nanocrystallized zone. The thick oxide skin changes the metallic glass surface to oxide ceramic. It is proposed that effective disruption of the oxide skin is essential to the sintering of metallic glass. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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