... Performance additives are found in all quality lubricants or the fluid would be sold as a basestock. These additives have many functions, some of which include corrosion protection, antioxidant, antiwear, acid neutralizations, dispersancy, detergency, and antifoam protection. The type...

... Conditioning monitoring of lubricants in operation usually considers different physical and chemical quantities but not functional properties. The identification of the induction time or offset point (“cliff” or “jumping-off point”), after which wear and friction will increase, and thus improve...

... While comprising only a minor portion of the lubricant market in terms of tonnage, lubricating greases are a key segment in that they fill a number of critical roles by virtue of their unique properties. As non-Newtonian fluids, greases remain in place when equipment is idle and provide...

... not consider the fact that cylinder valves also contain nonmetallic seat materials and lubricants that may react with oxygen in a dangerous way. Because of this unsatisfactory situation, BAM initiated a research project to perform endurance testing of cylinder valves for oxygen service with oxygen. This test...

... Toxicity is an important property of environmentally considerate lubricants. To determine this property, numerous toxicity test methods have been developed using sophistical devices. Some of these tests have been adopted as is, while others have required some modification or do not work...

... With advanced lubrication technology, natural resources have been turned into lubricants which are no longer recognizable by microorganisms and enzymes that convert natural substances into their basic building blocks. To make more environmentally friendly products, significant efforts...

... One of the primary functions of a lubricant is to preserve the cleanliness of a combustion engine's mechanical parts. The cleanliness of the mechanical parts is facilitated by the introduction of “detergency” and “dispersancy” additives to the engine oil. This last property, dispersancy...

... This paper examines the potential sources of fluid contamination that may occur during the manufacture, transportation, delivery, and use of a turbine oil for power generation. A turbine oil is a very precise formulation. If it becomes polluted with other lubricants or water, its performance...

... The ability to measure lubricant film thickness in elastohydrodynamic point contacts was greatly improved when the method of interferometry was introduced in the late 1960s. Constant refinements of the technique have made it possible to measure the thickness of thin films with an accuracy...

... In assessment of lubricant properties and in various contact applications, it is of importance to know the frictional qualities. Under quasi-static conditions, normal and transverse forces are measured using force transducers, but the task is more difficult when loads are high and transient...

..., and improved water separability properties. The exceptional feature of these Group II finished products is their outstanding oxidation stability. The outstanding oxidation stability of the Group II lubricants is due not only to the high-purity base oils, but also to the carefully chosen additive package...

... Silicone greases are used extensively in oxygen systems at low pressures (0-0.4MPa) on account of their excellent lubricating and sealing properties. However, ignitions have occurred with silicone greases when they have been used in high pressure oxygen systems (>10MPa). The data presented...

... where long life is required. bearing steel carbide fatigue grain hardness lubricant retained austenite rolling element vacuum Erwin V. Zaretsky^ Selection of Rolling-Element Bearing Steels for Long-Life Applications REFERENCE: Zaretsky, E. V., "Selection of Rolling-Element Bearing...

... ceramic ESCA four-ball friction lubricant standards test method tribology wear Richard S. Gates, Jeffrey P. Yellets, D. E. Deckman, land Stephen M. Hsu2 Considerations in Ceramic Friction and Wear Measurements REFERENCE: Gates, R. S., Yellets, J. P., Deckman, D. E., and Hsu, S. M...

... Lubricant degradation under in-service conditions can be often traced to oxidation. Environmental effects under in-service conditions are often recognized to affect the oxidation pathways of lubricants. In this study, environmental factors such as metal catalysts, fuel components, and oxides...