Abstract
Titanium has low wear and corrosion resistance due to its low hardness. The corrosion and wear resistance of titanium are improved using various surface modification methods such as coating with sufficient materials. Al2O3 based microparticles’coatings have interesting mechanical properties. Mechanical properties of alumina can be improved with several techniques such as applications of alumina nanoparticles instead of microparticles and also adding ceramics such as TiB2. Air Plasma Spraying is a physical method for coating, which is one of the most commercial and economical coating techniques. The aim of this work is to coat TiB2-Al2O3 Nanocomposite on commercially pure titanium by Air Plasma Spraying method. Spraying process was operated at two steps. In this research, the effect of current on melting of TiB2-Al2O3Nanocomposite and microstructure of coatings was investigated. Surface characteristics were evaluated using Field Emission Scanning Electron Microscopy (FESEM(. The microstructure of the coatings consisted of two distinct regions and was completely melted and quenched as splats, and the other one was incompletely melted.
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