Open AccessMULTIPHYSICS MODEL OF IRON POWDER COMPACTS FOR EFFICIENT MICROWAVE PROCESSING
Author(s) -
Jutika Devi,
M. Jaleel Akhtar,
Pranayee Datta
Publication year - 2017
Publication title -
progress in electromagnetics research m
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 31
ISSN - 1937-8726
DOI - 10.2528/pierm17021306
Subject(s) - multiphysics , microwave , materials science , iron powder , nuclear engineering , process engineering , computer science , metallurgy , engineering , finite element method , structural engineering , telecommunications
A generalized multiphysics model using COMSOL Multiphysics software for optimizing the sintering process of iron powders having various green densities is developed. The modeling is facilitated by designing a 30 GHz multimode applicator, where the test sample is placed for the microwave processing. The effective dielectric and magnetic properties of the resultant metal powder compact is estimated using the effective electromagnetic model considering the idea of core-shell particle approach followed by the Lichtenecker’s mixture formula. A theoretical approach relating the penetration depth, proper impedance matching and volume fraction of different density powder compacts is also discussed here. From the study, it is clear that the effective dielectric and magnetic properties contribute to the microwave sintering process of metal powders.
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