This paper summarizes the recent progress on the study of nanofluids, such as the preparation methods, the evaluation methods for the stability of nanofluids, and the ways to enhance the stability for nanofluids, the. Lubricants free fulltext tribological properties of. Click create pdf xps document, then click create pdf xps. Aug 08, 20 mineral base oils often defined as petroleumbased oil, mineralbaseoil stock is overwhelmingly the most popular baseoil stock in use today. Physical properties of lubricants valvolinecummins. Cambridge university department of engineering electronic devices spectroscopy groupand materials group nanomaterials and 2 one atom thin strength highly stretchable linear spectrum. Graphene oxide nanosheets as effective friction modifier for. We remain committed to providing cuttingedge solutions to help power your production. Physical properties of lubricants valvoline technical services page 1 following are the important properties of a lubricant. Mineral base oils often defined as petroleumbased oil, mineralbaseoil stock is overwhelmingly the most popular baseoil stock in use today.
Lubricants may contain additives known as friction modifiers that chemically bind to metal surfaces to reduce surface friction even when there is insufficient bulk lubricant present for hydrodynamic lubrication, e. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Shear modulus is the ratio of shear stress divided by the shear strain in the. Today, a life without nanotechnology is hard to imagine. Advanced nanolubricants for improved energy efficiency and reduced emissions in engines a.
Pastes are grease like lubricants containing a high percentage of solid lubricants used for assembly and lubrication of highly loaded, slow moving parts. Most of the water used in the fracking process is retrieved from well immediately and the rest eventually flows up with the natural gas and oil. Nanofluids are a new class of advanced heattransfer fluids engineered by dispersing nanoparticles smaller than 100 nm in diameter in conventional heat transfer fluids. To improve the oilsolubility of nanoparticles, a new technology was used to prepare a kind of lubricant containing titanium dioxide tio2 nanoparticles. When the grain size of the nanoadditives is smaller than the irregular surface roughness, the valleys between the frictional surfaces asperities can be stuffed with the nanoadditives leading to.
Manufacturing properties of engineering materials lecture notes. The functional attributes and utilization of borates in lubrication nanotechnology dr. National conference on recent trends and developments in sustainable green technologies journal of chemical and pharmaceutical sciences. Types of lubricants lm systems mainly use grease or sliding surface oil for their lubricants. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. The functional attributes and utilization of borates in. The onestep method yields nanofluids directly through chemical methods. Tribological properties of tio2 nanoparticles used as an additive in base oil were evaluated. Comparative study of different nanolubricants for automotive. The microstructures of the prepared nanoparticles were characterized via transmission electron microscope tem and infrared spectroscopy ir. After the solvent evaporates, the coating cures at room temperature to form a solid lubricant. Ever increasing severity in operating conditions and advances in equipment technology coupled with raising lubrication requirements are the key reasons for the exploration of new kind of. Lubricants and lubrication from the well to the applications. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
Effects of ws2 and ifws2 on the tribological properties of lubricating grease. This presentation does not contain any proprietary, confidential, or otherwise restricted information. Mechanism of thick liquid and thin liquid lubrication 1. Fuels and lubricants training ppt free download as powerpoint presentation. The proper selection and application of lubricants will hopefully be made simpler if a little of the basic theory is understood. A ballondisc setup tribometer has been used to verify the friction reduction due to nanosheets prepared by a modified hummers method and dispersed in mineral oil. In hydrodynamic lubrication the lube oil film thickness is greater than outlet, pressure at the inlet increases quickly, remains fairly steady having a maximum value a little to the outside of the bearing center line, and then decreases quickly to zero at the outlet. People can view the slides even if they dont have powerpoint, but they cant make changes to it.
An introduction to lubricants basic lubrication principles this article serves to be a practical guide to lubricants and lubrication. For parts that are inaccessible for lubrication after assembly a dry film lubricant can be sprayed. To sustain maximum power output from your turbines, you must minimize unscheduled and costly. Mineral oil comes out of the earth in a crude form that must be refined to remove impurities i. Convert and create pdf from various types of files like word doc, excel xls, powerpoint ppt. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Nanolubricants are the nanoparticles suspended in base lubricants, are being developed to increase the performance of machine components at high temperatures, which reduces friction and wear in sliding contact encountered in many heat engines.
Fuels and lubricants training ppt motor oil gasoline. Graphene based nanofluids and nanolubricants deepdyve. When one surface moves over another, there is always some resistance. Comparative study of different nanolubricants for automotive applications 2016010486 the intervention of nanotechnology in the field of lubricants have found path to several new lubricants for high temperature applications. The requirements that lubricants need to satisfy generally consist of the following. Pdf converter is a online webbased document to pdf converter software. Ferrari department of engineering, cambridge university, cambridge, uk. The tribological behaviour of graphene oxide nanosheets in mineral oil was investigated under a wide spectrum of conditions, from boundary and mixed lubrication to elastohydrodynamic regimes. Nanofluids, the fluid suspensions of nanomaterials, have shown many interesting properties, and the distinctive features offer unprecedented potential for many applications. Training topics introduction safety moment what a lubricant is expected to do what is friction causes lubrication regimens lubrication intervals one minute inspections. Additives in lubricating oils additives are substances formulated for improvement of the antifriction, chemical and physical properties of base oils mineral, synthetic, vegetable or animal, which results in enhancing the lubricant. This process of introducing lubricant is called lubrication. Advanced nanolubricants for improved energy efficiency and. An industrial perspective on current research boris zhmud 1, and bogdan pasalskiy 2 1 applied nano surfaces, knivstagatan 12, uppsala 75323, sweden 2 department of commodity science and technology, kyiv national university of trade and economics, kioto street 19, kyiv 02156, ukraine.
In the publish as pdf or xps dialog box, choose a location to save the file to. When the grain size of the nanoadditives is smaller than the irregular surface roughness, the valleys between the frictional surfaces asperities can be stuffed with the nanoadditives leading to formulate a triboboundary film on the worn surface that can. Solid lubricants solid lubricants are solid materials, which reduce coefficient of friction and wear of rubbing parts preventing direct contact. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Gpa the shear modulus is the initial, linear elastic slope of the stressstrain curve in shear. Lubricants free fulltext tribological properties of the. In twostep method, graphene is synthesized in powder form by means of physical or chemical methods, e. Forms of solid lubricants requirements to solid lubricants properties. Ahmet aran mfg prop v1 5 elastic modulus young modulus, e unit. Our nanotechnology products and applications database already provides an overview of how nanomaterials and nanostructuring applications are used today in industrial and commercial appplications across. The intervention of nanotechnology in the field of lubricants have found path to several new lubricants for high temperature applications. The process of commercialization is broken into phases, from the initial introduction of.
It is measured at specific temperature by hydrometer or automatic density meter. Density density is fundamental physical property of oil. Nanotechnology consists of a set of enabling technologies that lead to new applications and nanomaterials in many traditional industries and emerging new ones. Nanoparticles can be produced from several processes such as gas condensation, mechanical attrition or chemical precipitation techniques. Nickelbased nanolubricants containing sizetunable monodispersed nickel nanoparticles were in situ synthesized in polyalphaolefin denoted as pao6 via a simple onestep thermal decomposition method with nihcoo 2 2h 2 o as the ni source, pao6 as base oil, as well as oleylamine and oleic acid as the surfacecapping agents. Save powerpoint presentations as pdf files office support. Preparation of nickelbased nanolubricants via a facile in. Environmentally acceptable lubricants section 1 introduction in addition to spills and stern tube leakage, there are operational inputs of lubricant oils that occur due to continuous lowlevel discharges and leakages that occur during normal vessel. Reducing frictional power losses and improving the scuffing resistance in automotive engines using hybrid nanomaterials as nanolubricant additives. Chemical energetics free download as powerpoint presentation. When you save presentation as a pdf file it freezes the formatting and layout. Nano products online store nanoproducts, nanoparticles. Commercialization is the process by which a new product or service is introduced into the general market.
Graphene oxide nanosheets as effective friction modifier. Ppt presentation to investor lube crude oil re refining. The grease used in this study was a foodgrade aluminumcomplex grease which did not contain any traditional extreme pressure antiwea r epaw additives such as moly and sulfur. Gpa youngs modulus, e, is the slope of the initial, linearelastic part of the stressstrain curve in tension or compression. Functional carbonbased nanomaterials cbns have become important due to their unique combinations of chemical and physical properties i.
Performance of a lubricant is enhanced in multiple ways by adding a combination of additives such as antifriction, antiwear, extreme pressure, antioxidant, anticorrosion, detergent etc. Graphene based nanofluids and nanolubricants are synthesized using the onestep method or the twostep method. The under standing of their action and the development of various type of nanoparticles are at the origin of new lubrication strategies using composite or functionalized nanoparticles in dispersion in lubricating oils or greases to confer to the lubricants the needed functions. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Environmentally preferable purchasing fact sheet biolubricants. Ecology and safety as a driving force in the development of vehicles ip radom, 02 march 15 march, 2008 technical university of radom wroclaw university of technology.
1063 721 1490 612 1521 1038 585 523 1193 1166 1140 1243 17 1188 1378 18 1643 359 1319 186 1573 1644 1601 133 1043 1588 219 502 763 880 177 103 177 494 1244 199 1196 857 26 752 1112 1412 1163 357 1168 1125