Akademik Veri Yönetim Sistemi
11. International European Congress on Advanced Studies in Basic Sciences, Rome, İtalya, 11 - 13 Kasım 2024, cilt.1, ss.215-219
Solid particle erosion is a damage
process in which abrasive particles accelerated within a flow repeatedly strike
the target surface, causing wear. Polymer matrix composites find applications
in many advanced industries where the wear process occurs intensively. Within
the scope of the present study, the effect of using aluminum oxide (Al₂O₃)
particles as a reinforcement element in epoxy matrix on erosive wear
performance was investigated. Epoxy composites reinforced with Al₂O₃ particles
were produced at three different reinforcement ratios (10, 20, and 30 wt.%)
using the open-mold casting method. Solid particle erosion tests were carried
out at four different impingement angles (15°, 30°, 60°, and 90°) using garnet
(180 – 400 µm) as erodent. The erosion resistance and erosion behavior of the
materials were evaluated based on their erosion rates. It was determined that
neat epoxy and its Al₂O₃ particle-reinforced composites exhibited ductile
erosion behavior, with maximum erosion rates occurring at 30° impingement angle
and minimum erosion rates occurring at 90° impingement angle. Ductile erosion
behavior of neat epoxy continued in a ductile manner without change due to the
reinforcement element. Al₂O₃ particle reinforcement caused a decrease in the
erosion resistance of epoxy. The erosion rates of the composites were higher
compared to neat epoxy. The increase in the erosion rate continued linearly
with the increase in the reinforcement ratio. As a result of the morphological
analysis of eroded surfaces conducted using a scanning electron microscope,
potential erosion mechanisms were discussed. It was suggested that the breaking
and removal of Al₂O₃ particles during erosion was one of the main mechanisms
responsible for the increase in erosion rates.