Year: 2025
Type: article
Abstract: Purpose: The purpose of this study is to manufacture an Aluminium metal matrix composite (Al-MMC) bearing material reinforced with 6 wt.% ZrB₂ Nano composite particulates (target range: 5–12 wt.%), formulate SAE 20W40 lubricants containing dispersed TiO₂ nanoparticles at 0.5 and 1.0 wt. and enhance performance. Design/Methodology/Approach: The research followed an experimental design integrating materials engineering, lubrication science, and tribological testing to evaluate the performance of Al-MMC hydrodynamic journal bearings reinforced with 6% ZrB₂ via stir casting and lubricated with TiO₂ nanolubricants. The collected experimental data from the data acquisition system of the journal bearing test rig, with flush-mounted sensors installed (embedded in the bearing surface) to avoid flow disturbances and tapped holes connected to external pressure transducers via tubing, were processed. Research Limitation: The research was conducted with limitations, including a speed of 1000 rpm and a load of 200-400N. Also, in the material composition, 6% Nanocomposite and 1% TiO2 Nano particles. Findings: Optimal performance was observed at a TiO₂ concentration of [0.5–1.0 wt.%], beyond which agglomeration effects diminished gains. Mechanistic interpretation suggests combined benefits from (i) increased composite surface hardness and thermal diffusivity (ZrB₂), and (ii) tribofilm formation, rolling, and polishing actions of TiO₂ nanoparticles within the lubricant film. Practical Implication: The proposed material–lubricant pairing offers a viable path toward lightweight, energy-efficient bearing systems for automotive and industrial power units. Social Implication: These arise from improvements in machinery performance, environmental sustainability, industrial efficiency, and economic development. Originality/Value: It helps fill a notable research gap by evaluating tribological performance (friction, wear, pressure) of both materials using TiO₂-enhanced lubricants, which has not been comprehensively explored.
DOI: 10.26437/a2btv896
Authors: A. B. Gaikwad, A. A. Utpat, H. Warade, S. S. Jawale
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415733684