Microwave power absorption characteristics of iron oxides
Document Type
Article
Publication Date
2015
Department
Department of Materials Science and Engineering
Abstract
The microwave power absorption characteristics of iron oxides, including Fe2O3, Fe3O4 and Fe0.925O, have been studied by determining dielectric loss and magnetic loss distributions in 0.05-m-thick oxide slabs irradiated with 1.2-kW, 2.45-GHz microwaves. The results reveal that the dielectric loss is the main factor contributing to microwave absorption in Fe2O3 and Fe0.925O, while the magnetic loss dominates the power absorption in Fe3O4 below its Curie point. Uneven power distributions are observed in the slabs and this phenomenon becomes even worse at high temperatures at which the permittivity increases significantly. Quantification of power absorption in the oxides is of great importance for efficient and uniform microwave heating.
Publication Title
Characterization of Minerals, Metals, and Materials 2015
ISBN
978-3-319-48191-3
Recommended Citation
Peng, Z.,
Hwang, J.,
Andriese, M.,
Zhang, Y.,
Li, G.,
&
Jiang, T.
(2015).
Microwave power absorption characteristics of iron oxides.
Characterization of Minerals, Metals, and Materials 2015, 299-305.
http://doi.org/10.1007/978-3-319-48191-3_37
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4121