期刊
SCRIPTA MATERIALIA
卷 161, 期 -, 页码 36-39出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.10.012
关键词
Spark plasma sintering; Diffusion coefficient; Densification; Power-law creep
类别
资金
- European Research Council under the Advanced Grant INTELHYB -Next Generation of Complex Metallic Materials in Intelligent Hybrid Structures [ERC-2013-ADG-340025]
Evaluation of the diffusion coefficient of metal powders was attempted by using the power-law creep model in conjunction with the isothermal densification kinetics during spark plasma sintering (SPS). The diffusion coefficients obtained from the densification data of elemental Fe, Ni and Al powders are found to be higher than those reported in the literature. The higher values of diffusivity can be attributed to electric current effects. Our analysis demonstrates that it is possible to evaluate diffusion coefficients from experimental SPS densification data. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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