The material absorbs the microwave energy in the course of microwave processing. Material turns into some of this energy to heat, and this heat causes an increase in temperature of the material. Then, inner of the material gets warmer than the surface of the material because the surface loses more heat to the surrounding. The feature has the capability to heat a big phase of material integrity. There are some advantages of the opposite thermal effect in microwave heating.
- The material can be warmed quickly without superheating the surface.
- Elimination of gases from the poriferous material without fracture
- The quality of the product increases.
- The new substance is synthesized.
Material processing by microwave heating has been tested with a lot of experimental and theoretical results and practice. As it can be seen from the above discussion, microwave heating is a promising option according to traditional material processing methods, because of reduced processing time, reduced production cost, high heating rates, and energy saving.