Bonding at Glass / Steel Interface: A Precursor for Diverse Engineering Surfaces

Abstract

The interaction of silicate glass coating on steel was examined using Transmission Electron Microscope (TEM) Scanning Electron Microscope (SEM) and Energy Dispersive Atomic X-rays (EDAX). TEM and SEM micrographs displayed uniform graded interface as well as convoluted surfaces. The EDAX analysis identified the presence of Silica (Si) as the major components of the coating matrix in the ceramic layer and Iron (Fe) as the major component of the metal substrate in the metallic region. The interaction / dissolution of Si into the Iron matrix and that of Fe into the ceramic matrix at the interface are confirmed with EDAX. Consequently, bond formation / excellent adhesion of the silicate glass coating on the metal at the interface was generated. The product; a smooth surface with designed improved performance characteristics was formed.