Effect of Epoxy-Egg Shell Nanoparticle Composite Coating on the Microstructure and Mechanical Properties of Mild Steel

Abstract

Nanoparticles due to their large surface areas have been shown to be
excellent materials as they are good absorbents of coating pigments. In
this research, an attempt has been made to develop a novel epoxy-egg
shell ash nanoparticle (ESAnp) composite coating on mild steel. Sol-gel
method was used to produce the nanoparticles. A 1, 2, 3, 4 and 4wt%
ESAnp were added to epoxy. The coating was done using spraying
method. The microstructure, coat thickness, hardness values and
adhesion strength were determined. Improvement of hardness values
and adhesion strength of the mild steel were obtained 4wt% ESAnp at
43.48 % and 190.4%. The results obtained from this work showed that
epoxy-4wt% ESAnp has best properties for adhesion strength and
hardness values.