The effect of particulate strengthening on microstructure and mechanical characterization of binary-modified composites on mild steel
No Thumbnail Available
Files
Date
Journal Title
Journal ISSN
Volume Title
Publisher
The Author(s)
Abstract
Description
This article presents the microstructure, tribological behavior, and hardness properties of the Zn-TiO2 functional
composite coating produced using electrolytic co-deposition technique. The 7.0–13.0 weight fractions of Ti particles
were incorporated in a Zn bath to form Zn-TiO2 alloy in the presence of other additives. The microstructural properties
of the fabricated coating were investigated using a scanning electron microscope equipped with an energy-dispersive
spectroscope, X-ray diffraction, and an atomic force microscope. The anticorrosion behavior in 3.65% NaCl medium was studied using potentiodynamic polarization technique and characterized using high-resolution optical microscope. The
hardness and wear properties of the coated alloys were measured with high diamond microhardness tester and
reciprocating sliding tester, respectively. From the results, the increases in hardness and wear resistance are attributed to the formation of the incorporated particulate and uniform precipitation of the metal grains at the metal lattice. The contribution of TiO2 particles especially with Zn-13Ti-0.3 V-S provides new orientation of metal–matrix-modified coated structure and decrease in friction coefficient. The anticorrosion resistance characteristics were found to improve significantly in response to concentration of additive.
Keywords
T Technology (General), TJ Mechanical engineering and machinery