To account for the heating from the use of SiC susceptors, the authors modified Equation
(4.12) to include the additional heating effect.
where kSiC is a proportionality constant determined from simulation.
The theoretical prediction and the experimentally obtained heating behavior for tin,
copper and tungsten alloy compacts are shown in Figure 4.19. It can be observed that the
predicted heating profile is in close proximity with the experimental results. The discrepancy
in the heating profiles was partially attributed to the fluctuations in the input power during
the actual heating, which was assumed to be constant for the theoretical prediction [21].
An upper limit for the temperature attainable by the metal compact was observed for all
three cases due to a balance between the heat generated from PEM and heat losses from Pconv
and Prad.
In addition, the authors also applied the model to predict the effect of particle size on the
microwave heating behavior of the compact, as shown in Figure 4.20.
Different approaches have been adopted to explain the heating behavior of powdered
metals based on dielectric and magnetic losses, and we can observe the complexities of