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Comprehensive Process Maps For Synthesizing High Density Aluminum Oxide-Carbon Nanotube Coatings By Plasma Spraying For Improved Mechanical And Wear Properties, Anup K. Keshri
FIU Electronic Theses and Dissertations
Plasma sprayed aluminum oxide ceramic coating is widely used due to its outstanding wear, corrosion, and thermal shock resistance. But porosity is the integral feature in the plasma sprayed coating which exponentially degrades its properties. In this study, process maps were developed to obtain Al2O3-CNT composite coatings with the highest density (i.e. lowest porosity) and improved mechanical and wear properties. Process map is defined as a set of relationships that correlates large number of plasma processing parameters to the coating properties. Carbon nanotubes (CNTs) were added as reinforcement to Al2O3 coating to improve the fracture toughness and wear resistance. Two …