Abstract

In the arena of engineering, metallurgists look for techniques to improve the mechanical and chemical properties
of the materials. A review of a host of relevant literature on the composites leads to some important observations
on the gap that prevails for developing the composite with increased strength to weight ratio, improved mechanical
properties, and reduced corrosion rate with the addition of fused SiO2 dispersoid for the nickel-based alloy. In this
connection, an investigation has been carried out to fabricate and evaluate the strength, chemical properties, and
corrosion resistance of chilled composites consisting of nickel matrix with fused silica particles (size 40-150 μm)
in the matrix. The main objective of the present research is to obtain fine grain Ni/SiO2 chilled sound composite
having very good properties. The dispersoid added ranged from 3 to 12 wt. % in steps of 3%. The subsequent
composites cast in molds containing metallic and non-metallic chill blocks (MS, SiC, and Cu) were tested for their
microstructure, chemical properties, and corrosion behavior.