Abstract
The present work studies the tribological performance of Tungsten Carbide (WC) nanoparticles reinforced epoxy polymer nanocomposites. Polymer nanocomposites are prepared by hand lay-up method. Erosive wear and hardness tests were conducted to examine the physical and wear properties of epoxy/WC nanocomposites. Addition of WC nanoparticles led to significant reduction in erosion rate. In addition to that, incorporation of WC nanoparticles enhanced the hardness of epoxy nano composites. At 2% weight of WC nano filler, nanocomposites showed better performance in erosion wear properties and also in hardness. While at 3wt% of WC filler, least performance in hardness was caused by the weak adhesive bonding between the matrix and filler. The nature of erosion wear behavior was observed. Finally worn surfaces of nanocomposites were inspected using a “scanning electron microscope (SEM)”.
Highlights
Solid particle erosion is one of the wear types of a complex nature, in which erosion occurs by a combination of surface degradation and continuous loss of target substance due to continual impact of solid particles (Finnie, 1995)
While at 3wt% and 4wt% of WC particles the phenomenon in reduction of hardness is due to the weak adhesion between WC nanofillers and epoxy matrix and agglomeration of particles due to the increase of particles weight percentage
Tests were carried out to establish the result of WC nanoparticles on the erosion resistance of epoxy nanocomposites using silica sand as an erodent
Summary
Solid particle erosion is one of the wear types of a complex nature, in which erosion occurs by a combination of surface degradation and continuous loss of target substance due to continual impact of solid particles (Finnie, 1995). Zhou et al (2013) prepared two types of nano silica (Pyrogenic and colloidal) reinforced polyacrylate based nano coating composites and observed the influence of key parameters such as nano silica content, erodent type, nano silica content and impact angle on the erosion behavior of composites. From their results, with sharp edge erodent type, the erosion resistance increased with filler volume. Zhang et al (2016) investigated the performance of graded SiC particles incorporated epoxy resin From the results they observed that the graded SiC enhanced the hard spots and density, which intern leads to enhancement of erosion resistance. Nano particles are supplied by US Research Nanomaterials, Inc., Houston, USA
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