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Showing 1 to 10 of 10 for “"Solid lubricant"”.
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Fabrication and tribology of composite coatings incorporating solid lubricant micro-reservoirs
… behavior of composite coating incorporating solid lubricant reservoirs has been investigated in this study. A new method, termed " microbeading" was devised to create microscopic reservoirs on the surface of sputter-deposited hard coatings. Pin-on-disk tests were used to evaluate the …
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Tribology and Micro-Chemistry of Sputter Deposited Composite Coatings on Honed Steel Substrates
… rf sputtering using a dc substrate bias and the solid lubricant coatings (TiO(,2)) were deposited in an Ar and O(,2) mixed rf glow discharge. Chemically honed steel substrates which consisted of a checkerboard of raised squares separated by 1.5 (mu)m deep channels were prepared by …
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Transfer lubrication techniques in a stick slip situation.
… whilst the other piston consisted of a dry lubricant compact providing for the transfer of solid lubricant to the metal junction. Instrumentation was incorporated in order to measure appropriate stick slip properties and the major parameters of the system were varied.Unlubricated stick slip …
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Evaluation of diamond-like carbon films for lubrication in space
Solid coatings for lubrication of mechanisms operating in space are widely used because of the rather severe operating conditions. These include the presence of an ultrahigh vacuum, a wide operating temperature range, an absent of gravity, a lack of oxygen, and ionising radiation. Currently, …
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Friction and Wear of Polytetrafluoroethylene/Graphene Oxide Composite Thin Films
… (PTFE) is a commonly used solid lubricant due to its low coefficient of friction and chemical inertness. As a polymer, PTFE suffers from high wear and low adhesion to substrates limiting its use as a thin film. Thin PTFE films are ideal candidates for solid lubrication in …
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Wear of aluminium MMCs against automobile friction materials
… friction is constant due to the formation of a solid lubricant layer at the wear interface. When this MMC is worn against a semi-metallic pad formulated for use against cast iron, wear rates are extremely high due to two and three body abrasion which lead to subsurface delamination and early …
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Novel fibrillar carbon nanotube heat transfer gels with enhanced thermal conductivities
Lubricants and cooling agents such as oil, ethylene glycol, and water are often used as traditional heat transfer fluids (HTFs) in engines, radiators, heat pumps, and other equipment which require cooling and/or energy maintenance. The United States of America (USA) spends over $80 billion on …
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DESIGN AND OPTIMIZATION OF LOW-Cu AND Cu-FREE AUTOMOTIVE BRAKE FRICTION MATERIALS
… materials (T30-15 and T30-16), and it acted as a solid lubricant on the interface between the rubbing pad and the cast iron rotor lowering the adhesive forces. The friction and wear of the T-Baseline material was controlled by adhesive mechanisms. The NAO Cu-free materials (T30-15 and T30-16) with …
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Tribology of polymeric coatings for aggressive bearing applications
… However, the capabilities of conventional fluid lubricants are limited such that the state of lubrication is usually unknown, and, at best, in the boundary/mixed lubrication regimes. Therefore, it becomes necessary to implement some type of advanced protective coatings on the interacting surfaces …
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Recycling of worn-out vehicular brake pads and discs
… A 5 wt.% concentration of MnS was added as a solid lubricant to the coating formulation, and the microstructural and tribological characteristics of the coated discs (with and without MnS) were compared. The microstructural analysis revealed a homogeneous distribution of MnS phase in the …