Crystallization of Glass Coating By Microwave Heating

Microwave and conventional heat treatment processes were utilized to achieve adequate crystallization in MgO-Al2O3-TiO2 based glass coatings with identical compositions. The processed coatings were evaluated by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and image analysis. XRD analysis showed that the misfit strain in the lattice of conventionally heat treated coating was higher than that in the corresponding microwave processed coating. SEM investigation along with image analysis confirmed that microwave heating generated finer crystallites in the glass coating than those obtained in the coating processed by conventional heating