TY - JOUR
T1 - Pd-based metallic glass with a low glass transition temperature
AU - Yamamoto, Tokujiro
AU - Hayashi, Kouichi
AU - Seki, Ichiro
AU - Suzuki, Kosuke
AU - Ito, Masahisa
N1 - Funding Information:
The authors thank H. Kato and A. Takeuchi, Tohoku University (TU), for assisting with TMA measurement and their advice. The authors also wish to thank three technical staff members, Y. Murakami, S. Ito, and E. Aoyagi, TU. Preliminary experiments for this work were performed at BL-3C in the Photon Factory, KEK. This work was supported in part by the Amada Foundation for Metal Work Technology . It was also supported in part by Grants-in-Aid for Challenging Exploratory Research 21654039 , 23656421 and 24656432 , and Young Scientists (B) 21760548 from Japan Society for the Promotion of Science (JSPS).
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2013/1/1
Y1 - 2013/1/1
N2 - In this study, a Pd40Cu20Ge40 metallic glass has been introduced as a novel prototype of Pd-based metallic glasses. The Pd40Cu20Ge40 glass exhibits glass transition at 52°C. The glass transition temperature reduced by the melting point of most glasses is roughly 0.5 or 0.6 but that of the Pd40Cu 20Ge40 glass is only 0.36, which is considerably lower than those of other metallic glasses. Specific temperature measurement, microstructural observation, viscosity measurement and demonstration of viscous flow forming were performed to confirm that the novel material presented is a glass. From viewpoint of the constraint on the motion of molecules or clusters in glasses, new categorization of glasses has been proposed.
AB - In this study, a Pd40Cu20Ge40 metallic glass has been introduced as a novel prototype of Pd-based metallic glasses. The Pd40Cu20Ge40 glass exhibits glass transition at 52°C. The glass transition temperature reduced by the melting point of most glasses is roughly 0.5 or 0.6 but that of the Pd40Cu 20Ge40 glass is only 0.36, which is considerably lower than those of other metallic glasses. Specific temperature measurement, microstructural observation, viscosity measurement and demonstration of viscous flow forming were performed to confirm that the novel material presented is a glass. From viewpoint of the constraint on the motion of molecules or clusters in glasses, new categorization of glasses has been proposed.
KW - Amorphous alloys
KW - Differential scanning calorimetry (DSC)
KW - Metallic glasses
KW - Transmission electron microscopy (TEM)
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U2 - 10.1016/j.jnoncrysol.2012.09.029
DO - 10.1016/j.jnoncrysol.2012.09.029
M3 - Article
AN - SCOPUS:84870028122
VL - 359
SP - 46
EP - 50
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 1
ER -