A5037654441- Lubricants and Their Additives
- Tribology and Wear Analysis
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Gear and Bearing Dynamics Analysis
- Tribology and Lubrication Engineering
- Adhesion, Friction, and Surface Interactions
- Force Microscopy Techniques and Applications
- Corrosion Behavior and Inhibition
- Biodiesel Production and Applications
- Mechanical stress and fatigue analysis
- Metal Alloys Wear and Properties
- Brake Systems and Friction Analysis
- Advanced materials and composites
- Surgical Sutures and Adhesives
- Advanced machining processes and optimization
- Structural Engineering and Vibration Analysis
- Ionic liquids properties and applications
- Organometallic Compounds Synthesis and Characterization
- High Entropy Alloys Studies
- Graphene research and applications
- Meat and Animal Product Quality
- Soft Robotics and Applications
- Structural Analysis of Composite Materials
- Shoulder Injury and Treatment
University of Leeds
2016-2025
Harbin Engineering University
2024
Interface (United Kingdom)
2008-2013
Heriot-Watt University
2003
This work investigates the tribological behavior of neat and carbon fiber-reinforced polyether-ether-ketone (PEEK) materials processed using fused filament fabrication (FFF) technique. The reciprocating sliding printed polymers against stainless steel (SS) under dry water-lubricated conditions was studied. running-in evolution friction were dependent on material combination conditions. PEEK reinforced with 10 wt% fibers optimal considering performance. Neat exhibited a abrasive adhesive wear...
This study aims to investigate the relationship between rheological and tribological properties of commercial full fat fat-free/low versions liquid soft solid colloidal systems (milk, yoghurt, cream cheese) with their sensory properties.
Additive manufacturing (AM), also known as three-dimensional (3D) printing, of polymer-based materials is growing a time-efficient, economical, and environmentally sustainable technique for prototype development in load-bearing applications. This work investigates the defects arising from processing material extrusion-based AM polymers their impact on part performance. The influence raster angle orientation printing speed tribological characteristics, microstructure, surface finish...
Two sets of nanoscale multilayer Ti-DLC/DLC coatings, with similar chemical composition but different periods between consecutive layers (0.4 and 5.5 nm), were deposited by non-reactive direct current magnetron sputtering using rotational speeds the substrate holder (12 1 rpm, respectively) in this work. The results show that overall Ti content coatings varied from ≈ 2.9 to 8.2 at. % both cases. Significant fluctuations concentration middle points DLC Ti-DLC observed for at rpm. All mainly...
A new decomposition mechanism for molybdenum dialkyldithiocarbamate, a friction modifier used in engine lubricants, has been proposed.
Among friction modifier lubricant additives, molybdenum dialkyldithiocarbamate (MoDTC) provides excellent behavior in boundary lubricated tribocontacts. It is well established that the low obtained with MoDTC as a result of formation lattice structure MoS2 nanosheets. However, relationship between species quantity, its distribution on contact surface, and not yet fully understood. In this work, Raman microscopy atomic force (AFM) have been used aim understanding link MoDTC/ZDDP tribofilm...
The tribological behaviour of diamond-like carbon (DLC) and graphene nanoplatelets (GNP) nanocomposite has not been previously explored in a lubricated environment, with some previous studies reporting only on materials the surface DLC. In this study DLC-GNP films various GNP coverages were synthesised by 3 step process: spin coating suspension, heat treatment, DLC deposition. study, effect coverage mechanical properties, response film studied at elevated temperatures against cast iron pin...
In this study, a bio-based ester was experimentally tested under reciprocating contact in terms of the tribological performance to assess potential materials as boundary lubrication additives for low Sulphated Ash, Phosphorus, and Sulphur (SAPS) lubricants. A synergy has been observed when ethyl oleate used with concentration ZDDP, showing both lower friction wear loss, compared only or Zinc dialkyldithiophosphates (ZDDP) single base oil. SEM-EDX ToF-SIMS analyses confirm that additive...
Achieving macroscale superlubricity on engineering steel by utilizing aqueous green lubricants has gained growing interest, given its substantial potential to reduce energy consumption and carbon footprint. However, maintaining under diverse sliding conditions over a prolonged duration is major obstacle for real-scale applications. Herein, we report that robust durable tribofilm enabled unique lubrication mechanism based carboxylated graphene quantum dots (CGQDs) in glycerol triggers...
There has been much attention paid to the lubricant additives zinc dialkyldithiphosphate and molybdenum dialkyldithiocarbamate as most commonly used antiwear/antioxidant friction modifiers. The mechanism by which they function subject of research work. As a result these efforts tribofilms formed from above are fully chemically characterized but understanding physical properties dynamics their formation, stability removal is still not satisfactory needs more research. This paper reviews...