The Role of Transfer Layers on Friction Characteristics in the Sliding Interface between Friction Materials against Gray Iron Brake Disks

This paper is intended to demonstrate that designers of wet clutches for power transmission can obtain the optimum friction characteristics for specific applications by considering the interaction between friction materials and lubricants. A friction clutch plate rig is described and the friction results obtained are presented. It is shown that a wide variation of coefficients of friction and frictional characteristics in wet friction clutches can be obtained by changing the oils and friction materials. In particular the coefficient of friction is dependent upon (1) the oil, (2) the materials of the sliding surfaces, (3) sliding speed, and (4) temperature. It is also shown that the coefficient of friction is affected by ( a) refining treatment given to the oil, ( b) different base oils, and ( c) additives.

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Friction Characteristics of Graphite for Brake Friction Materials.

Journal of the Society of Powder Technology Japan ◽

10.4164/sptj.33.782 ◽

1996 ◽

Vol 33 (10) ◽

pp. 782-787 ◽

Cited By ~ 2

Author(s):

Yoshiyuki SUGAI ◽

Kennosuke IIDA ◽

Masao ARAI ◽

Katsuji SEKI

Keyword(s):

Friction Materials ◽

Friction Characteristics

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Dynamic Behaviour of Plain Slideways

Proceedings of the Institution of Mechanical Engineers ◽

10.1243/pime_proc_1966_181_019_02 ◽

1966 ◽

Vol 181 (1) ◽

pp. 169-184 ◽

Cited By ~ 19

Author(s):

R. Bell ◽

M. Burdekin

Keyword(s):

Machine Tool ◽

Dynamic Behaviour ◽

Damping Capacity ◽

Friction Characteristic ◽

Stick Slip ◽

Friction Characteristics ◽

Physical Systems ◽

Major Emphasis

The friction characteristics resulting from the motion of one surface over another form a very important facet of the behaviour of many physical systems. This statement is particularly valid when considering the behaviour of machine tool slideways. Most slideway elements consist of two plain surfaces whose friction characteristic is modified by the addition of a lubricant. In many cases the complete slideway consists of many mating surfaces and the choice of slideway material, slideway machining and lubricant is often influenced by the long term problem of wear. The aim of this paper is to present results of experiments on a test rig designed to be representative of machine tool slideway conditions; the experiments were wholly concerned with the behaviour of the bearing under dynamic conditions. The major emphasis is on results obtained with a polar additive lubricant which appears to exclude the possibility of ‘stick-slip’ oscillations. A parallel series of tests are reported where a normal hydraulic oil was used as lubricant. The use of this second lubricant allowed some study of the ‘stick-slip’ process. The dynamic friction characteristics, cyclic friction characteristics and damping capacity of several slideway surface combinations have been obtained and are discussed in the context of earlier work in the field and the role of slideways in machine tool behaviour.

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The role of scorching treatment on the wear and emission behavior of friction materials with and without copper

Wear ◽

10.1016/j.wear.2020.203480 ◽

2020 ◽

Vol 460-461 ◽

pp. 203480 ◽

Cited By ~ 1

Author(s):

Ana Paula Gomes Nogueira ◽

Paolo Bagolan ◽

Mara Leonardi ◽

Stefano Gialanella ◽

Giovanni Straffelini

Keyword(s):

Friction Materials ◽

Emission Behavior

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Corrosion Induced Brake Torque Variation: The Effect from Gray Iron Microstructure and Friction Materials

10.4271/2005-01-3919 ◽

2005 ◽

Cited By ~ 9

Author(s):

Keun Hyung Cho ◽

Jae Min Han ◽

Ho Jang ◽

Seong Jin Kim ◽

Jae Young Lee ◽

...

Keyword(s):

Gray Iron ◽

Friction Materials ◽

Brake Torque

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Role of constituents of friction materials on their sliding behavior between room temperature and 400 °C

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2014.08.048 ◽

2015 ◽

Vol 65 ◽

pp. 179-186 ◽

Cited By ~ 14

Author(s):

Fatima Eddoumy ◽

Haytam Kasem ◽

Houcine Dhieb ◽

Josephus Gerardus Buijnsters ◽

Philippe Dufrenoy ◽

...

Keyword(s):

Room Temperature ◽

Friction Materials

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Towards superlubricity in nanostructured surfaces: the role of van der Waals forces

Physical Chemistry Chemical Physics ◽

10.1039/c8cp02508h ◽

2018 ◽

Vol 20 (34) ◽

pp. 21949-21959 ◽

Cited By ~ 5

Author(s):

Fernando G. Echeverrigaray ◽

Saron R. S. de Mello ◽

Leonardo M. Leidens ◽

Marcelo E. H. Maia da Costa ◽

Fernando Alvarez ◽

...

Keyword(s):

Thin Films ◽

Energy Dissipation ◽

Van Der Waals ◽

Van Der Waals Forces ◽

Nanostructured Surfaces ◽

Sliding Interface ◽

Frictional Damping

Energy dissipation associated with frictional damping mechanisms owing to van der Waals (vdW) forces by induced polarizability at the sliding interface of a-C:H thin films.

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