Mechanical and tribological properties of composite made of marble dust-reinforced C93200 copper alloy

Abstract

Composite materials are unique because reveal great physical, mechanical and thermal properties. However, there is yet huge potential to enhance their features by adding specific reinforcement in the matrix in order to reach the requirements of a particular application. This paper presents detailed research on the impact of marble dust reinforcement to mechanical and tribological features of copper based metal alloy (C93200 series) composites dedicated for bearing applications. The novel composites made with marble dust reinforcement (1.5 to 6.0 wt%) were manufactured using the liquid metal stir casting technique. A micro-hardness tester and universal testing machine (Instron-5967) were used to obtain the mechanical properties. While, the POD tribometer was engaged to detect the wear features by simulating various operating conditions by setting the temperature constant (35°C). The Scanning Electron Microscope (SEM) was used to investigate the wear mechanisms produced at the hard contact between the composites with different marble content against an EN-31 hardened steel disc. The data gathered in this research proves an improvement in the mechanical properties, especially for a higher reinforcement ratio of novel composite, in respect to the matrix alloy. Furthermore, the novel marble dust reinforced composites reveal much better wear resistance in respect to un-reinforced composite that make it suitable for bearing application.

Enhancing Tribo-Mechanical and Corrosion Properties of ADC 12 Alloy Composites through Marble Dust Reinforcement by Squeeze Casting Technique

“…The improved corrosion resistance can be attributed to the MD particles' uniform distribution and effective barrier properties, which inhibit corrosive agents' penetration into the composite matrix. MD particles act as a corrosion inhibitor, protecting the ADC 12 matrix from corrosive attack [59].…”

Tribological Performance of Composites Reinforced with the Agricultural, Industrial and Post-Consumer Wastes: A Review

“…On the other hand, while investigating the normal load influence on specific wear rate, the lowest wear rate was observed for the composite with 2.5 wt % of marble dust. Marble dust (1.5–6 wt %) reinforced copper alloy was also used by Rajak et al [ 127 ]. The authors observed that all composites were characterized by lower wear loss against different sliding velocities compared to copper alloy without reinforcement.…”

A critical review on tribological properties, thermal behavior, and different applications of industrial waste reinforcement for composites

“…The worn surface micrographs revealed that 4.5 wt% addition of MD filler exhibit superior wear resistance (showing small grooves) in comparison to unreinforced copper alloy that shows ploughing signs. 30 The prime reason for such an occurrence is the better bonding between the base matrix and hard reinforcement particles thus producing minimum wear loss. 45 Sharma et al determined the influence of MD reinforcement and heat treatment on friction and wear properties of Al6063 alloy composites.…”

“…The worn surface micrographs revealed that 4.5 wt% addition of MD filler exhibit superior wear resistance (showing small grooves) in comparison to unreinforced copper alloy that shows ploughing signs. 30…”