TY - JOUR
T1 - Measurements of Interdiffusion Coefficients in Liquid AuGe Alloy
AU - Tanimoto, Keiji
AU - Ando, Yuki
AU - Suzuki, Koji
AU - Yokoyama, Yoshihiko
AU - Suzuki, Shinsuke
N1 - Funding Information:
This work was performed under the inter-university cooperative research program (Proposal No.14G0050) of the Cooperative Research and Development Center for Advanced Materials, Institute for Materials Research, Tohoku University, Grants in Aid for Scientific Research ”Base study C”, Iketani Science and Technology Foundation grant, Special Coordination Funds for Promoting Science and Technology ” Waseda institute for advanced study Tenure Track Program”, and Japan aerospace exploration agency ”Diffusion Phenomena in Melts Working Group”.
Publisher Copyright:
© 2015, Springer Science+Business Media Dordrecht.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - As for alloy systems forming amorphous structure, it is very useful to pursue the diffusion mechanism of the eutectic alloys in the vicinity of the eutectic point to elucidate the amorphous developmental process. We therefore investigated interdiffusion coefficients in the liquid state of AuGe and AuSi alloy, which remarkably have the deep eutectic temperature. The diffusion experiments using a shear cell device were performed in the temperature range from 686 K to 1073 K. The acquired data seem to be reliable, because they were reproducible and overlapping well on fitting curves so that the convection would have been suppressed. As a result, the temperature dependence of the interdiffusion coefficients in the liquid AuGe alloy was expressed in the Arrhenius equation and no peculiarity in the diffusion mechanism was confirmed. The values of interdiffusion coefficient of this study would be highly appropriate considering the past experimental values of self-diffusion coefficients of AuSi alloy and the negative mixing enthalpy of the alloy system. In addition, the previous research on structure analysis in which the shoulder was not observed in the vicinity of the eutectic point supported our confirmation of the Arrhenius expression for the temperature dependence of the interdiffusion coefficients in the liquid AuGe.
AB - As for alloy systems forming amorphous structure, it is very useful to pursue the diffusion mechanism of the eutectic alloys in the vicinity of the eutectic point to elucidate the amorphous developmental process. We therefore investigated interdiffusion coefficients in the liquid state of AuGe and AuSi alloy, which remarkably have the deep eutectic temperature. The diffusion experiments using a shear cell device were performed in the temperature range from 686 K to 1073 K. The acquired data seem to be reliable, because they were reproducible and overlapping well on fitting curves so that the convection would have been suppressed. As a result, the temperature dependence of the interdiffusion coefficients in the liquid AuGe alloy was expressed in the Arrhenius equation and no peculiarity in the diffusion mechanism was confirmed. The values of interdiffusion coefficient of this study would be highly appropriate considering the past experimental values of self-diffusion coefficients of AuSi alloy and the negative mixing enthalpy of the alloy system. In addition, the previous research on structure analysis in which the shoulder was not observed in the vicinity of the eutectic point supported our confirmation of the Arrhenius expression for the temperature dependence of the interdiffusion coefficients in the liquid AuGe.
KW - AuGe
KW - AuSi
KW - Diffusion in liquids
KW - Eutectic temperature
KW - Microgravity
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U2 - 10.1007/s12217-015-9421-5
DO - 10.1007/s12217-015-9421-5
M3 - Article
AN - SCOPUS:84949315266
SN - 0938-0108
VL - 27
SP - 345
EP - 351
JO - Microgravity Science and Technology
JF - Microgravity Science and Technology
IS - 5
ER -