Characterization of D-gun sprayed Al2O3-13%TiO2 and Al2O3-40%TiO2 coatings on ASTM 316 boiler steel and their microstructure

Coating by thermal spray method has proved to be the widely used and most economic way for developing coatings on various different materials in order for achieving all the needed material characteristics. Protective Coatings are most broadly and preferably produced and experimentally tested for various industrial areas namely automobile industry, thermal power plants etc. D-gun sprayed coating method can really be considered as unique coating method well known for producing coatings with very dense microstructure, low porosity, stronger and Erosion-corrosion resistant coatings. In this present study work Al2O3-13%TiO2 and Al2O3-40%TiO2 Coatings were deposited over ASTM 316 Boiler tube Steel with D-Gun spraying method. Various different methods namely X-Ray diffraction (XRD), SEM and X-Ray Mapping were used to characterize both the above mentioned coatings. After the investigation it was found that both of these coatings which we wanted to establish have been successfully established. (C) 2021 Elsevier Ltd. All rights reserved.