PERFORMANCE ANALYSIS AND EXPERIMENTAL INVESTIGATION ON PISTON BY PLASMA SPRAY TECHNIQUE

Abstract

n this paper, the surface of a piston in an engine is coated with coating powder by the plasma-spray
technique, and its surface behavior is subsequently analyzed. The purpose of this study is to analyze with
mechanical and thermal effects of surface coating for a piston in frictional mechanism. In this related, with and
without coated specimens were prepared, then the microstructure, hardness, corrosion test were carried out. From
the obtained test and Ansys results, it is found that the coated specimen having improved properties in towards the
diesel engine performance. The results show less deformation and fewer scratches due to wear on the coated piston
as compared to uncoated one.
Also the aim of the investigation is to compare the mechanical, thermal properties and wear resistance
of the piston with coating deposited on substrate material as aluminium by plasma spray technique. The surfaces
topography and the structure of the plasma spray coatings is observe on the optical microscopy. The evaluation of
the adhesion of coatings to the substrate is made using the hardness test also compare the thermal barrier properties.
In case of the coating deposited onto the aluminium a very good adhesion has been revealed to the substrate
material in comparison to the Alumina - Titania coating deposited onto the heat treated hot work Aluminium.
Taking into account the results of measurements, one can state that the lowest wear and thermal resistance at
certain conditions at both room and elevated temperatures displays the coating deposited onto plasma spray coating.

Author

JAVITH SALEEM J.S