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Synthesis and thermodynamic evaluation of intermetallic Mg-Ni/Mg-Cu nanoscale powders

Published online by Cambridge University Press:  31 January 2011

Jun-Peng Lei ,
Xing-Long Dong ,
Fu-Guo Zhao ,
Hao Huang ,
Xue-Feng Zhang ,
Bo Lu  and
M.K. Lei
Xing-Long Dong*
Affiliation:
School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116024, People's Republic of China
M.K. Lei
Affiliation:
School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116024, People's Republic of China
*
a) Address all correspondence to this author. e-mail: dongxl@dlut.edu.cn
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Abstract

Nanometer-sized intermetallic Mg-Ni and Mg-Cu compound powders were prepared by a physical vapor deposition method (arc discharge) and characterized by means of x-ray diffraction and transmission electron microscopy. Based on an empirical specific heat equation, the effective heat of formation and its temperature dependence were calculated to explain phase formation in nanoscale powders of the binary Mg-Ni and Mg-Cu systems. It is shown that theoretic calculations are in good agreement with the experimental observations.

Keywords

NanoscalePhysical vapor deposition (PVD)Powder

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Articles
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Journal of Materials Research , Volume 24 , Issue 8 , August 2009 , pp. 2503 - 2510
Copyright
Copyright © Materials Research Society 2009

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