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| 1 | Influence of thermal effects on elastohydrodynamic(EHD) lubrication behavior at high speeds显示文摘This paper describes a study of point contact elastohydrodynamic(EHD)lubrication behavior at high speeds(up to 20 m s1).Central film thicknesses were measured by optical interferometry device.The influence of slide-roll ratio and operating temperature on the central film thickness was determined.The influence of thermal effects on the reduction of film thickness was discussed via the analysis of numerical simulation method considering thermal effects.Subsequently,the experimental data was used to amend a set of unified parameters for the thermal corrections for different types of oil at high speeds. | LIANG He GUO Dan REDDYHOFF Tom SPIKES Hugh LUO Jian Bin | 2015 | Science China(Technological Sciences)2015，58，3： | 3 |
| 2 | Stress-augmented thermal activation:Tribology feels the force显示文摘In stress-augmented thermal activation, the activation energy barrier that controls the rate of atomic and molecular processes is reduced by the application of stress, with the result that the rate of these processes increases exponentially with applied stress. This concept has particular relevance to Tribology, and since its development in the early twentieth century, it has been applied to develop important models of plastic flow, sliding friction, rheology, wear, and tribochemistry. This paper reviews the development of stress-augmented thermal activation and its application to all of these areas of Tribology. The strengths and limitations of the approach are then discussed and future directions considered. From the scientific point of view, the concept of stress-augmented thermal activation is important since it enables the development of models that describe macroscale tribological performance, such as friction coefficient or tribofilm formation, in terms of the structure and behaviour of individual atoms and molecules. This both helps us understand these processes at a fundamental level and also provides tools for the informed design of lubricants and surfaces. | Hugh SPIKES | 2018 | Friction2018，6，1： | 3 |
| 3 | Film Forming and Friction Properties of Overbased Calcium Sulphonate Detergents 显示文摘 | Ksenija Topolovec - Miklozic T Reg Forbus Hugh Spikes | 2008 | Tribology Letters2008，29，： | 1 |
| 4 | The friction-Reducing Properties of Molybdenum Dialkyldithiocarbamate Additives: Port 2 - Durability of Friction Reducing Capability显示文摘 | Jocelyn Granam Hugh Spikes Ron Jensen | 2001 | Tribology Transactions2001，44，4： | 1 |
| 5 | The Friction - Reducing Properties of Molybdenum Dialkyldithiocarbamate Additives: Part 2 - Durability of Friction Reducing Capability 显示文摘 | Jocelyn Graham Hugh Spikes Ron Jensen | 2001 | Tribology Transactions2001，44，4： | 1 |
| 6 | Behaviour of MoDTC in DLC/DLC and DLC/steel contacts显示文摘 | Balasubramaniam Vengudusamy Jonathan H. Green Gordon D. Lamb Hugh A. Spikes | 2012 | Tribology International2012，，： | 1 |
| 7 | The friction reducing properties of molybdenum dialkyldithiocarbamate addititives显示文摘 | Jocelyn Graham Hugh Spikes | 2001 | Tribology Transactions2001，44，： | 1 |
| 8 | The friction-Reducing Properties of Molybdenum Dialkyldithiocarbamate Additives:Part 2-Durability of Friction Reducing Capability显示文摘 | Jocelyn Granam Hugh Spikes Ron Jensen | 2001 | Tribology Transactions2001，44，4： | 1 |
| 9 | The Influence of Molecular Architecture on the Macroscopic Lubrication Properties of the Brush-Like Co-polyelectrolyte Poly(L-lysine)-g-poly(ethylene glycol) (PLL-g-PEG) Adsorbed on Oxide Surfaces显示文摘 | Markus Müller Seunghwan Lee Hugh A. Spikes Nicholas D. Spencer | 2003 | Tribology Letters2003，，4： | 1 |
| 10 | Boundary Lubrication of Oxide Surfaces by Poly(L-lysine)-g-poly(ethylene glycol) (PLL-g-PEG) in Aqueous Media显示文摘 | Seunghwan Lee Markus Müller Monica Ratoi-Salagean Janos V?r?s Stéphanie Pasche Susan M. De Paul Hugh A. Spikes Marcus Textor Nicholas D. Spencer | 2003 | Tribology Letters2003，，3： | 1 |
| 11 | Influence of Polyalkylmethacrylate VII on Boundary Film Formation,Friction,Wear and Efficiency of Lubricants显示文摘Polyalkylmethacrylates(PAMAs) are well-known as viscosity index improvers and dispersant boosters.This paper shows that PAMAs are able to adsorb from oil solution on to metal surfaces,to produce thick,viscous boundary films.These films enhance lubricant film formation in slow speed and high temperature conditions and thus produce a significant reduction of friction.A systematic study of this phenomenon has made use of the highly flexible nature of PAMA chemistry.A range of dispersant and non-dispersant polymethacrylates has been synthesized.The influence of different functionalities,molecular weights and architectures on both boundary film formation and friction has been explored using optical interferometry and friction-speed charting.From the results, guidelines have been developed for designing PAMAs having optimal boundary lubricating properties.Through their ability to form boundary films PAMAs can significantly contribute to reduce wear in engine,gear and hydraulic lubrication.As a consequence of their viscometric and tribological performance PAMAs can furthermore improve fuel and energy efficiency in different,namely engine and hydraulic applications.Extensive work is currently conducted in the lubricant industry to develop engine oils with lower sulfur,phosphorus and metal content(low SAPS) and to optimize their frictional properties through the use of friction modifiers or synthetic base stocks.We have investigated the contribution of PAMA viscosity index improvers and boosters to improve fuel economy and to reduce wear levels.This paper reports our efforts to develop a new range of PAMAs that have been optimized in terms of composition,architecture,molecular weight and functionality and which can be used in low viscosity,low SAPS formulations to help meet the stringent requirements of modern engine oils. | Michael Müller Hugh Spikes Alex Tsay | 2006 | 润滑油2006，21，6： | 1 |
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