Microstructure Analysis of Al_2O_3 Ceramic Coatings Composite Steel Plate Prepared by Self-propagating High-temperature Synthesis

摘要

This manuscript was used to test feasibility that the Al_2O_3 ceramic composite steel plate was fabricated by Self-propagating High-temperature Synthesis (SHS). The Al_2O_3 ceramic coatings were prepared on the steel plates. The ceramic coatings had been subsequently characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) attachment. The results showed that the ceramic coatings could be divided into three layers called Al_2O_3 ceramic layer, Fe/Al_2O_3 blending layer and iron layer from the roof to the bottom. Al_2O_3 ceramic layer had many porosities and low density. The tissue structure of Fe/Al_2O_3 blending layer was compact and had no porosities.