1-20 of 54 Search Results for

lubricant rheology

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006399
EISBN: 978-1-62708-192-4
... on well-established and widely accepted analytical methods and design and analysis charts for dealing with some of the issues in the area of engine and power train tribology. It provides a discussion on lubricant rheology and the prediction of lubricating film thickness. The article reviews the frictional...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006423
EISBN: 978-1-62708-192-4
.... An increase in temperature results in a change in lubricant rheology, a decrease in flow stress of surface asperities and subsurface material, and an increase in chemical reactivity between the material being deformed and the lubricant. In the drawing process, hydrodynamic lubrication is promoted...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006403
EISBN: 978-1-62708-192-4
... that involve solid contact (see also the article “Laboratory Testing Methods for Solid Friction” in this Volume). Friction forces under lubricated conditions are mostly lower than those of solid friction and depend on the shear resistance of interfacial boundary films and on the rheology of the lubricant...
Book Chapter

By Justin Heimsch
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005273
EISBN: 978-1-62708-187-0
... METAL CASTING had its genesis in Merton Flemings' lab in 1971 with the rheological experiments done by David Spencer as part of his doctoral thesis. The discovery that shearing a semimolten metal produced potentially castable rheologies ignited tremendous interest in what would be an entirely new area...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
..., and thermal properties of polymer. This is followed by a section describing molecular weight determination using viscosity measurements. Next, the article discusses the use of cone and plate and parallel plate geometries in melt rheology. It then reviews the processes involved in the analysis of thermoplastic...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.9781627081924
EISBN: 978-1-62708-192-4
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003402
EISBN: 978-1-62708-195-5
... assumption used in polymer and composites processing, as compared to the fully developed temperature profile due to low Reynolds number flows. One of the most common situations in which the fully developed flow is used is in conjunction with the lubrication approximation. This allows one to simplify...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006393
EISBN: 978-1-62708-192-4
..., surface texture, and lubricant chemistry. Typical values range from 0.1 to 0.2 with hydrocarbon-based oils ( Ref 45 ). The coefficient of friction becomes entirely a function of lubricant rheology when full-film separation prevails ( Ref 46 ). It is common to consider the ratio of the sliding...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002490
EISBN: 978-1-62708-194-8
... bodies usually can provide the required rheology with minor additives such as dispersants (deflocculants) and through control of clay fractions and particle size distribution. For technical and advanced ceramics that contain no clay fraction organic binders, plasticizers and lubricants are added...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006370
EISBN: 978-1-62708-192-4
... is the mean velocity, η is the lubricant viscosity, θ is the bite angle, and σ is the material flow strength. γ is called the pressure-viscosity coefficient and appears in the Barus equation for lubricant rheology: (Eq 11) η = η o e γ p where p is the pressure and η o is the viscosity...
Book Chapter

By Rob Bosman
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006381
EISBN: 978-1-62708-192-4
... , 2016 , p 9 – 34 6. Delgado M.A. , Sánchez M.C. , Valencia C. , Franco J.M. , and Gallegos C. , Relationship among Microstructure, Rheology and Processing of a Lithium Lubricating Grease , Chem. Eng. Res. Des. , Vol 83 ( No. 9 ), 2005 , p 1085 – 1092 10.1205...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006424
EISBN: 978-1-62708-192-4
... on lubricant rheology. Thus, a highly viscous or semisolid lubricant such as lanolin may give lower friction at low speeds than viscous oil, yet result in higher friction at high speeds where its shear strength is higher than that of an oil film. Effects of Process and Surface Geometry As in all PHD...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004032
EISBN: 978-1-62708-185-6
.... The lubricant contains many surfactants and binders that change the droplet surface energy, rheology, physics, and thermodynamics. The lubricant contains fine particles of graphite (submicron to several microns in diameter) in colloidal suspension. Consequently, the flow is actually multiphase. The composition...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006411
EISBN: 978-1-62708-192-4
... 11 Lubricant properties Basic properties Performance properties Bulk modulus Corrosion/rust Surface tension Wettability Thermal conductivity Volatility Electrical conductivity Foaming/air release Heat capacity Toxicity Refractive index Biodegradability Rheology...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006405
EISBN: 978-1-62708-192-4
...Abstract Abstract This article focuses on lubricants classified as either internal combustion engine or nonengine lubricants, and the lubricant additives. The functional groups of chemically active and inert additives, as well as friction modifiers and other additives, are described in detail...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006053
EISBN: 978-1-62708-175-7
... on the size, complexity, shape, and quantity of parts required. After powder is spray dried or vacuum dried, it is shaped either directly or after adding more lubricants before it can be sintered to full density. Powder consolidation methods include uniaxial pressing, cold isostatic pressing (CIP), extrusion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... as close to as possible to their final shape. The article also provides useful information on drying methods, shrinkage, and defects as well as the removal of organic processing aids such as dispersants, binders, plasticizers, and lubricants. ceramic forming process drying green machining organics...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006422
EISBN: 978-1-62708-192-4
... visible. Effects of Roll Surface Roughness Roll surface roughness can be beneficial or harmful depending on the magnitude of the roughness relative to film thickness, on lubricant rheology, and on the directionality of the roll surface texture. Rolls are usually ground under closely controlled...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
.... In this classification, wear study is separated as elastomers, thermosets, glassy thermoplastics, and semicrystalline thermoplastics. The article describes the effects of environment and lubricant on the wear failures of polymers. It presents a case study on nylon as a tribological material. The article explains...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003009
EISBN: 978-1-62708-200-6
... Acetals are strong, stiff, and tough. Their properties have been measured and are predictable over a broad temperature range. They have good surface lubricity and a low coefficient of friction against metals, ceramics, other plastics, and themselves. Because they exhibit very low levels of cold flow...