Heating of metallic powders by microwaves: experiment and theory

Authors :: Buchelnikov, V.D.
Louzguine-Luzgin, D.V.
Xie, G.
Li, S.
Yoshikawa, N.
Sato, M.
Anzulevich, A.P.
Bychkov, I.V.
Inoue, A.
Source :: Journal of Applied Physics. Dec 1, 2008, Vol. 104 Issue 11, 113505-1-113505-10
Publication Year :: 2008
Abstract: The heating mechanisms of metallic powders in a multimode 2.45 GHz microwave applicator are studies. Weak heating of Au powder is explained by the absence on the particles of the oxide layer, which has allowed eddy currents flowing through larger area compared to other metals and reflection mechanism works much better in such case.