Friction and wear of graphite-fiber-reinforced glass matrix composites

Minford, Eric; Prewo, Karl M.

doi:10.1016/0043-1648(85)90223-6

Cited by 47 publications

(12 citation statements)

References 13 publications

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“…Although there was a slight improvement in the coefficient of friction when compared to the uncoated alumina material, the friction was still too high for practical applications. The tribological behavior of a glass-ceramic matrix reinforced with graphite fibers was studied [79]. It was revealed that the addition of the graphite fibers to the ceramic matrix did not provide adequate lubrication due to the high elastic modulus of the graphite fibers.…”

Section: Self-lubricating Behavior Of Alumina-graphite Compositesmentioning

confidence: 99%

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Self-Lubricating Behavior of Graphite-Reinforced Composites

Menezes

Reeves

Rohatgi

et al. 2013

Tribology for Scientists and Engineers

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Lubricants are extensively used between contacting surfaces to reduce friction and wear. Typically, liquid lubricants are used to achieve low friction and wear. However, these lubricants are not effective in elevated temperature applications or vacuum environments. For these reasons, solid lubricants are utilized to meet these operational needs, where liquid lubrication is impractical. Solid lubricants are only effective as long as they are present in the tribo-interface. Therefore, it is desirable to provide a constant supply of solid lubricant material to the contacting surface. This is often achieved by incorporating solid lubricants as a second phase in the base material. These composite materials have the ability to achieve low friction and wear at the contact surfaces without any external supply of lubrication during sliding. Metal matrix composites reinforced with lamellar solid lubricant particles such as graphite are being used as self-lubricating materials for various engineering applications. In this chapter, the tribological behavior of metal and ceramic matrix composites reinforced with graphite particles has been reviewed. More specifically, copper-graphite, nickel-graphite, magnesiumgraphite, silver-graphite, aluminum-graphite, silicon nitride-graphite, and alumina-graphite composites are studied. The influence of various environmental and mechanical parameters on the friction coefficient and wear rate is discussed. It was found that the amount of graphite released on the worn surface forms a thin transfer film on the contact surfaces. This transfer film reduces the overall friction coefficient and wear rate. The presence of the graphite-based transfer film increases the seizure resistance and enables the contacting surfaces to run under boundary lubrication without galling. The formation and retention of this transfer film 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. The effectiveness of the transfer film also depends on the nature of the sliding surface, the test condition, environment, and the graphite content in the composite.

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Section: Self-lubricating Behavior Of Alumina-graphite Compositesmentioning

confidence: 99%

“…The use of solid lubricants with metals is quite detailed in the literature through various applications as thin films on substrates by burnishing [7,9], sputtering [11,12], or plasma spraying [13,14]. More recently, the use of solid lubricants with ceramic materials has garnered interest [76][77][78][79].…”

Section: Introductionmentioning

confidence: 99%

Self-Lubricating Behavior of Graphite-Reinforced Composites

Menezes

Reeves

Rohatgi

et al. 2013

Tribology for Scientists and Engineers

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“…A cylindrical pin (1) of GFRE composite, of 15mm diameter and 23mm length, is loaded against a rotated cup (2). The main features of the test apparatus are a strain gauge (3) for measuring the friction force, a loading lever (4) for applying the normal load and a main thermocouple for measuring the interface temperature (5). With this apparatus, simultaneous measurements of friction force and sliding surface temperature can be obtained continuously during the test process.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, the tribological behavior of these materials should be studied comprehensively. Other than, limited studies have been concentrated on the characteristics of friction and wear of these materials [1][2][3][4][5][6] . Although generated surface temperature is another equally important parameter in studying the tribological behavior of polymer composite [7,8] , it is found that little attention has been paid to it.…”

Section: Introductionmentioning

confidence: 99%

“…For dry sliding contact, some researchers have been attempted to measure the surface temperature and investigate its roles on the tribological behavior of polymer composite [7,9,10,11,[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] . In measuring the surface temperature, they used an infrared fiber optic probe [10] , an imbedded or natural thermocouple [11] and an infrared microscope focused directly on the contact region [7] .…”

Section: Introductionmentioning

confidence: 99%

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On the Effect of Counterface Materials on Interface Temperature and Friction Coefficient of GFRE Composite Under Dry Sliding Contact

El-Tayeb¹,

Yousif²,

Brevern³

2005

American J. of Applied Sciences

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Nowadays, there is an increase interest in polymeric composite materials for highperformance in many industrial applications. In other words, the tribo-studies on polymeric materials are growing fast to enhance the polymeric products such as bearings, seals, ring and bushes. The current work presents an attempt to study the correlation between the type of counterface material and frictional heating at the interface surfaces for different, normal loads (23N, 49N and 72N), sliding velocities (0.18, 1.3 and 5.2 m s¯1) and interval time (0-720 sec). Sliding friction experiments are performed on a pin-on-ring (POR) tribometer under dry contact condition. Interface temperature and friction force were measured simultaneously during sliding of glass fiber reinforced epoxy (GFRE) composite against three different counter face materials, hardened steel (HS), cast iron (CI) and Aluminum alloy (Al). Experimental results showed that the type of counterface material greatly influences both interface temperature and friction coefficient. Higher temperature and friction coefficient were evident when sliding took place against HS surface, compared to sliding against CI and Al under same condition. When sliding took place against HS, the friction coefficient of GFRE composite was about an order of magnitude higher than sliding the GFRE composite against the other counter face materials. Based on the optical microscope graphs, the friction and induced temperature results of GFRE composite are analyzed and discussed.

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