Microwave Penetration Depth in Materials with Non-zero Magnetic Susceptibility
By Zhiwei Peng, Jiann-Yang Hwang, J. Mouris, R. Hutcheon, Xiaodi Huang. 2010
160 citations recorded by the source corpus.
A simplified equation for determining the transverse electromagnetic mode (TEM) power penetration depth of microwaves in materials having both magnetic and dielectric response was derived. The penetration depths for a magnetite concentrate were calculated using this “full-response” equation, and a significant difference is shown compared with the penetration depth obtained using only the dielectric response (i.e., assuming no imaginary part of complex relative permeability). The temperature dependence of the power penetration depth, up to 1000°C, was determined using measured values of the real and imaginary parts of complex relative permittivity, er′, er″ and permeability, μr′, μr″. The accurate determination of penetration depths can help in optimizing the dimensions of a load in a microwave furnace, producing more uniform heating under microwave irradiation and avoiding thermal runaway.
Subfields: Ceramics and Composites, Mechanical Engineering, Organic Chemistry
View Paper: https://www.semanticscholar.org/paper/56922399b61c753508f49400b848c10deac051aa
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In Ceramics and Composites
In Mechanical Engineering
In Organic Chemistry
Citations in the corpus
- Review on Microwave-Matter Interaction Fundamentals and Efficient Microwave-Associated Heating Strategies (2016, background): “The penetration depth, d, can be expressed in a general manner as [59,60]:”