Structure of molybdenum disulphide lubricant film

Brudnyi, Alex; Karmadonov, A.F.

doi:10.1016/0043-1648(75)90279-3

Cited by 33 publications

(16 citation statements)

References 1 publication

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“…It is a dark blue-grey or black solid, which feels slippery or greasy to the touch. It has hexagonal layerlattice structure (Lansdown 1992;Brudnyi & Karmadonov 1975). It has the advantages such as (i) practically no tendency to flow, creep or migrate, (ii) minimum tendency to contaminate products or environment (most suitable for textile and food industries), (iii) very low volatility enables it to be used in high vacuum, (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…So efforts are being put to develop solid lubricant, which is economical and easy to prepare in-house. Graphite and MoS 2 are important solid lubricants, and these have a layered structure (Lansdown 1992, Brudnyi & Karmadonov 1975. The layer consists of flat sheets of atom or molecules, and the structure is called a layer-lattice structure.…”

Section: Introductionmentioning

confidence: 99%

“…Efforts have been made to study the influence of MoS 2 on friction and wear during sliding (Takahashi & Okada 1975;Brudnyi & Karmadonov 1975;Tanaka et al 1981;Ravindran & Ramasamy 1984;Roberts 1989;Klenke 1990;Jain & Shukla 1991;Ogilvy 1993;Cunningham et al 1994;Semenov 1995;Donnet 1996;Hirvonen et al 1996;Morimoto 1997;Wahl et al 2000). Takahashi & Okada 1975 examined the frictional properties of MoS 2 on a microscopic scale.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, MoS 2 (Lansdown 1999;Lipp 1975;Lansdown 1992;Brudnyi & Karmadonov 1975;Bartz 1971;Holinski & Gansheimer 1972) was used as solid lubricant. It is a dark blue-grey or black solid, which feels slippery or greasy to the touch.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Study of solid lubrication with MoS2 coating in the presence of additives using reciprocating ball-on-flat scratch tester

Shankara

Menezes

Simha

et al. 2008

Sadhana

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Abstract. Molybdenum disulphide (MoS 2 ) based solid lubricant mixtures containing zirconia and graphite were prepared in the laboratory and coated on steel specimens. The experiments were done using reciprocating scratch test for various numbers of cycles. The results showed that the addition of zirconia and graphite into the MoS 2 lubricant has improved its properties in terms of both friction and wear. In addition, it was observed that the presence of moisture affects the life of the lubricating film. It was shown that at high temperature the moisture evaporation enhanced the coating performance of the film.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study of solid lubrication with MoS2 coating in the presence of additives using reciprocating ball-on-flat scratch tester

Shankara

Menezes

Simha

et al. 2008

Sadhana

View full text Add to dashboard Cite

show abstract

“…When solid lubricants such as graphite or molybdenum disulfide (MoS 2 ) are introduced at the sliding interfaces, the friction and wear are observed to decrease. Graphite and MoS 2 are important solid lubricants, and these have a layered structure [4]. The layer consists of flat sheets of atoms or molecules, and the structure is called a layer-lattice structure.…”

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confidence: 99%

Self-Lubricating Behavior of Graphite Reinforced Metal Matrix Composites

Menezes

Rohatgi

Lovell

2012

Green Energy and Technology

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Lubricants are extensively used between the contacting surfaces to reduce friction and wear. These lubricants are usually toxic and not readily biodegradable and thus these lubricants can cause considerable damage to the environment. The use of external lubricants can be eliminated by designing selflubricating composite materials. These composite materials have the ability to achieve low friction and wear at the contact surfaces without any external supply of lubrication during sliding. The metal matrix composites reinforced with various self-lubricating particles such as graphite, molybdenum disulfide are being used as self-lubricating materials for various engineering applications. In this paper, the tribological behavior of metal matrix composites reinforced with graphite particles has been reviewed. More specifically, aluminum-graphite, magnesium-graphite, copper-graphite, silver-graphite and nickel-graphite composites have been studied. The influence of various variables on the friction coefficient and wear rate is discussed. It was found that the amount of graphite released on the wear surface forms a tribo film on the contact surfaces. This reduces the overall friction coefficient and wear rate. The formation and retention of this tribo layer on the sliding surface as well as its composition, area fraction, thickness and hardness are important factors in controlling the friction and wear behavior of the material and depend on the nature of the sliding surface, the test condition, environment and the graphite content in the composite. The presence of graphite tribo layer also Keywords Friction Á Wear Á Self-lubrication Á Metal matrix composites IntroductionA lubricant is a material used to facilitate relative motion of solid bodies by minimizing friction and wear between interacting surfaces. A lubricant functions by introducing a layer of material with lower shear strength than the surfaces themselves between the sliding surfaces [1]. In some lubricated systems, the lubricant may not completely prevent asperity contact, although it will reduce it and may also reduce the strength of the junctions formed. In other cases, the lubricant completely separates the surfaces and no asperity junctions are formed at all [2]. In general, there are three categories of lubricants-liquid, solid and gaseous.Nearly all lubricants used in the automotive and manufacturing sectors are oil or grease-based. These oils include engine oils, transmission fluids, hydraulic fluids and gear oils. These products are not typically environmentally friendly or biodegradable and can introduce significant quantities of pollutants into the waste stream [3]. Thus, disposal of this very large volume of material obviously represents an environmental burden. Hence, it is very important to develop either green lubricants or composite materials which have self-lubrication properties.Composite materials are a special class of materials and are made from two or more constituent components with significantly different physical or chemical p...

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Fabrication and Tribological Behavior of Epoxy Hybrid Composites

Hemanth

2018

Synthesis and Tribological Applications of Hybrid Materials

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Structure of molybdenum disulphide lubricant film

Cited by 33 publications

References 1 publication

Study of solid lubrication with MoS2 coating in the presence of additives using reciprocating ball-on-flat scratch tester

Study of solid lubrication with MoS2 coating in the presence of additives using reciprocating ball-on-flat scratch tester

Self-Lubricating Behavior of Graphite Reinforced Metal Matrix Composites

Fabrication and Tribological Behavior of Epoxy Hybrid Composites

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