A Study on Processing, Characterization and Erosion Wear Response of Linz–Donawitz Slag Filled Epoxy Composites

Abstract

This paper reports a study on erosion response of epoxy composites filled with micro‐sized Linz–Donawitz (LD) slag particles. LD slag is a major solid waste generated in huge quantities during steel making. It comes from slag formers such as burned lime/dolomite and from oxidizing of silica, iron etc. while refining the iron into steel in the LD furnace. Although a number of ways for its utilization have been suggested in the past, its potential as a filler material in polymeric matrices has not yet been explored. In this work, composites of five different compositions (0, 7.5, 15, 22.5 and 30 wt% of LD slag reinforced in epoxy resin) are prepared by a simple hand layup technique. The composites are characterized in regard to their density, porosity, micro‐hardness and strength properties. Erosion trials (ASTM G 76) are conducted on the composite samples following a well‐planned experimental schedule based on Taguchi's design of experiments. The study reveals that the impact velocity and LD slag content in the composites are the most significant among various factors that influence the wear rate. This work shows that LD slag, in spite of being a waste, possesses fairly good filler characteristics as it modifies the properties and improves the erosion resistance of the polymeric resin.

A comparative analysis of physico‐mechanical, water absorption, and morphological behaviour of surface modified woven jute fiber composites

“…Figure shows the effect of fiber content on the void content of composites. Generally, the measured density is always less than the theoretical density, which excludes all the pores due to buoyancy effect caused by the trapped air . It is observed from the figure that the void percentage increases with the increase in fiber content.…”

Effect of blast furnace slag content on mechanical and slurry abrasion behavior of needle‐punched nonwoven fabric reinforced epoxy composites

“…[16] The actual density (ρ ce ) of the composite is determined experimentally by simple water immersion technique. [16] The actual density (ρ ce ) of the composite is determined experimentally by simple water immersion technique.…”

“…The theoretical density (ρ ct ) of all prepared composite materials on the basis of weight fraction is estimated by the relation given by Pati and Satapathy. [16]…”

Mechanical properties and slurry erosion resistance of a hybrid composite SiC foam/SiC particles/EP

“…It is shown that the coating is suitable for the relative mild conditions of liquid–particle two‐phase flow. It has been reported by Pati et al , Biswas et al and Srivastava et al that compared with the fiber‐reinforced composite, the particle filler has a significant effect on the erosive performance of the hybrid composite. The incorporation of particle fillers results in the improvement of erosive resistance of fiber‐reinforced polymer composites.…”