Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 128 for “"Lubricants"”.
-
Behavior of liquid lubricants in vacuum.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1965. M.S.
-
The Sliding Friction of Bonded Solid Lubricants
The tribological study of Bonded Solid Lubricants, BSLs is reviewed, this includes a review of the constituent components of a BSL including a table of publications which presents a list of papers containing detailed data about the friction and wear of BSL coatings. The general theories of friction …
-
Ultra-High Vacuum Studies of Model Boundary Layer Lubricants
… and surface chemistry of model boundary layer lubricants adsorbed onto single-crystal metal surfaces under ultra-high vacuum conditions. Chapter 3 presents results from the adsorption of a set of straight-chain carboxylic acids and perfluorinated carboxylic acids onto the Ag(110) surface. The …
-
An investigation of the effectiveness of sheet metal drawing lubricants
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Mechanical Engineering, 1956
-
Evaluation of lubricants for cold forming of steels by double-cup extrusion tests
… the lubrication properties of different types of lubricants and coatings.;It was found to be a useful approach to estimate the relative efficiency of different lubricants and coating methods. It indicated that one specific lubricant has significantly superior lubricant characteristics than …
-
A tribological study of the interaction between surface micro texturing and viscoelastic lubricants
An experimental study is performed on micro textured surfaces using both elastic and Newtonian fluids in order to understand the effect of surface texturing and fluid rheology on sliding friction under lubricated conditions. Nickel micro textured surfaces containing 50 to 125 micron diameter pores …
-
Upcycling of Polystyrene, Polyolefin, and Polyvinyl Chloride Waste into Chemicals, Surfactants, and Lubricants
… produced from PVC, including polyalphaolefin lubricants. This was achieved by harnessing the ability of chloroaluminate ionic liquids and select Lewis acids to weaken and cleave the C-Cl bond. The working hypothesis is that introducing α-olefins in the reaction suppresses elimination reactions …
-
Effect of fullerene containing lubricants on wear resistance of machine components in boundary lubrication
… that make their use as additives to liquid lubricants potentially beneficial. The goal of this study was to investigate the effect of fullerene containing lubricants on wear resistance of steel-bronze couples operating under boundary lubrication conditions. A mathematical model of deformed …
-
Defining the role of elastic lubricants and micro textured surfaces in lubricated, sliding friction
… the frictional profiles of elastic and Newtonian lubricants. These non-Newtonian effects were determined to be the shear rate-dependent lubricant viscosity and the added normal stresses of the elastic lubricant undergoing shear flow. A modified Gumbel number is presented that includes the shear …
-
Volumetric Properties and Viscosity of Fluid Mixtures at High Pressures: Lubricants and Ionic Liquids
… their mixtures with polymeric additives, used in lubricants and ionic liquids, with cosolvent addition, for use in biomass and polymer processing. Experimental density data were collected using a variable-volume view-cell at pressures up to 40 MPa and temperatures up to 398 K. A unique high …
-
Development of nano composite coatings for enhanced performance in non-conventional lubricants under sliding contact.
… (HFE-347mcc3). HFE-7000 has been employed as lubricants. In the second part of this study five different types of coatings namely, Ni-Al2O3, Ni-ZrO2, Ni-SiC, Ni-Graphene and Nickel-only have been used to investigate the wear and friction performance of these coatings in systems based on …
-
Rheological characterization of lubricants in automotive industries through development of a novel capillary breakup extensional rheometer
… fluids such as paints, motor oils, metalworking lubricants and waxes frequently used in the automotive industry. Key processes in the automotive industry can be potentially optimized with a better understanding of the rheology of these materials, including paint spray, auto-body coating, engine …
-
Pretreatment of Small Four-Stroke Engine Components for No-Oil Hot Tests
… using less than 10 grams of specially formulated lubricants for pretreatment. Implementation of this procedure for conducting the hot tests in the manufacturing facility would save revenue and eliminate potential hazards mentioned above in addition to cutting down on manpower and/or machinery used …
-
Reciprocating compressor lubrication – lubricant dilution with natural gas species and the impact on lubrication rates at various operating conditions
… to the customer. Many of these compressors use lubricants to reduce friction and wear at the piston-cylinder interface. These lubricants have a difficult job for many reasons, but one phenomenon is often overlooked: gas solubility. Natural gas is soluble in the lubricant at high pressures and …
-
Design and characterization of diamond-like carbon coated kinematic contacts for improved coupling precision and wear resistance
… kinematic couplings. Coatings with the help of lubricants have been used in the past to improve the repeatability of kinematic couplings, but DLC coatings offer the opportunity to improve repeatability without the use of lubricants. This will allow for use of kinematic couplings in tools and …
-
Understanding the electrification-driven lubrication mechanism of phosphonium ionic liquids to enhance the degradation resistance of electric vehicle components
… challenging the performance of traditional lubricants. As an alternative, conductive lubricants, such as phosphonium based room temperature ionic liquids (PRTILs) could be utilized. However, the ionic nature of PRTILs could be detrimental to the surface due to corrosion, which can accelerate …
-
Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant
… entitled 'Nanoscale Organic-Inorganic Hybrid Lubricants'. Understanding nanoscale dynamics of polymer and particle upon mixing will be a useful guide to improve its application. Polymer Nanocomposites: Polymer and Particle Dynamics - Polymer nanocomposites containing nanoparticles smaller than …
-
Characterization of palm olein (oil) as base oil for biolubricant production
… as potential base oil for producing bio based lubricants. The samples analysed were obtained from the open markets in the South West, South East and South South zones of Nigeria. Some of the physical and chemical properties such as viscosity, flash point, pour point, cloud point, specific …
Page 1 of 7