Wear behaviour of grey cast iron with the presence of copper addition

Abstract

This article presents an experimental study to investigate wear resistance of grey cast iron samples with different additions of copper from 0.00 to 3.15 wt%. A pin-on-disc apparatus was designed and built to conduct the experimental trials and assess the influence of wear time, rotational speed and normal load on wear behaviour. Experiments on wear time were from 5 to 20 min, rotational speed from 90 to 1400 r/min and applied pressure from 2.0 to 8.0 MPa, all in dry conditions. Results showed that morphology and microstructure are important parameters in relation to the wear regime exhibited by the material. It is confirmed that wear losses increased with increase in wear time, rotational speed and applied pressure. Also, it is clearly seen that adding copper to the cast iron changed the ferrite matrix into a pearlite matrix. This led to a significant improvement in the mechanical properties, especially wear resistance, with slight increase in the hardness. Generally, wear losses were quantified for cast iron with added copper; an increase in copper from 0.00 to 3.15 wt% reduced the material loss by about 30%.

Tribological Behavior and Surface Characterization of Gray Cast Iron-EN31 Steel under Lubricated Sliding Conditions

“…Also, it is seen that around 1 m/s sliding speed, a trend change can be observed. A similar observation is found, when wear losses increase as wear time, rotating speed, and applied pressure increase [20].…”

“…Journal of Nanomaterials in wear (from -0.0014 to 0.0031 gms) at a sliding speed of 1 m/s and sliding distance of 900 m, thus indicating the dependency of adhesion wears on the PVT factor. Applied pressure may have the opposite effect by causing induced surface hardening, which in turn improves wear resistance [20]. Also, it is seen that a drop in adhesion wear can be seen with a higher speed of 1.5 m/s.…”

Sliding movement temperature analysis between composite conductor rail and a collector shoe

“…22,23 The literature demonstrates that the addition of copper to grey cast iron causes changes in the mechanical characteristics. 24–27…”

“…22,23 The literature demonstrates that the addition of copper to grey cast iron causes changes in the mechanical characteristics. [24][25][26][27] This study pertains to examine the sliding wear and temperature analysis between a composite conductor rail and a collector shoe, the latter of which is gray cast iron at different current densities over a range of applied loads. This work aims to learn more about the wear characteristics of an aluminum-stainless steel composite conductor rail sliding across a current collector and to gain a better understanding of the friction and wear mechanism with electric current.…”

Evaluation of the Microstructure, Tribological Characteristics, and Crack Behavior of a Chromium Carbide Coating Fabricated on Gray Cast Iron by Pulsed-Plasma Deposition

“…Gray cast iron (GCI) is a traditional structural material that is widely used in mechanical engineering due to its good manufacturability, low production cost, improved vibro-damping properties, and better dry-sliding wear resistance [ 1 ]. However, GCI is characterized by its low abrasive wear resistance because of the presence of the graphite phase, which easily degrades under abrasion [ 2 ]. This common problem can be solved by surface modification or protective coating deposition.…”