Abstract |
| We have been successfully welding bulk metals and dissimilar metals by microwave radiation, by using metal powder particles in the weld zone. In this paper, we have tried to explain the insight of electromagnetic field penetration into spherical conductive powder particles and its spatial oscillatory distribution. This new developed theoretical explanation here, gives insight as to how the entire weld zone volume becomes heat source; via absorption of microwave radiation, and thus this process of welding with microwave radiation, is with inertia less heat transfer, volumetric heating with inverted temperature profile. |
Keywords and phrases
skin depth, spherical harmonics, scattering, refractive index, Effective Medium Approximation (EMA), Mie solutions, metal powder, resonance cavity, wave length.
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