Journal
TRIBOLOGY INTERNATIONAL
Volume 153, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2020.106596
Keywords
AA2124-17SiC(p)/WC-6Co composites; Sliding friction; Graphite/diamond nano-oil; Anti-friction mechanism
Categories
Funding
- IC&SR, Indian Institute of Technology Madras, India [MEE/13-14/576/NFSC/AMIA]
- DST, GoI under the scheme of DST-FIST [SR/FST/ETII-059/2013(G)]
Ask authors/readers for more resources
The study found that under dry sliding conditions, high normal load and low sliding velocity can exacerbate adhesion and friction coefficient. However, palm-oil aerosol and diamond/graphite nanoparticles suspension can effectively reduce the friction coefficient and suppress adhesion phenomenon.
Current study investigates tribo-phenomena at sliding interface of Al2124-17SiC(p) disc and WC-6Co pin and explores suitability of nano-oil aerosols as lubricants. They form chip-tool tribo-pair in machining. Ploughing, adhesion, abrasion were predominant under dry sliding. Adhesion and friction-coefficient (COF) were severer with higher normal load and lower sliding velocity. Aerosol of palm-oil arrested adhesion of aluminium on carbide pin and reduced COF by 80-82% through film-lubrication but at low load conditions. Diamond/graphite nanoparticles (1 wt%) suspension helped palm-oil sustain film-lubrication at sliding interface even in extreme conditions, reducing COF further and arresting adhesion phenomenon. Rolling of near-spherical nano-diamonds or basal-plane shearing within graphite nano-platelets caused additional reduction in friction. Graphite nano-aerosol was superior and similarly effective in high-speed milling as SQL-medium.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available