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Effect of dry friction parameters on the tribosynthesis of secondary structures on composite antifriction iron-based material

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Powder Metallurgy and Metal Ceramics Aims and scope

The paper examines the tribological characteristics of a Fe–W–CaF2 composite antifriction material (CAM) in combination with 65G steel during dry friction in air at a high sliding velocity (15 m/sec) and insignificant (0.64–1.28 MPa) pressures. It is established that with twofold increase in pressure (from 0.64 to 1.28 MPa), CAM friction coefficient decreases from 0.25 to 0.20 (by 20%) and wear increases from 0.0158 to 0.03085 mg/km (by 49%) but remains insignificant. The factors acting in the friction process lead to the formation of secondary lubricating films. They prevent mechanical contact between the rubbing surfaces and provide necessary antifriction and operating properties. It is shown that the secondary lubricating films as thin layers with inclusions of solid lubricants differ from the starting material in chemical and phase composition, structural state, and better mechanical characteristics.

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Correspondence to O. I. Fushchich.

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Translated from Poroshkovaya Metallurgiya, Vol. 51, No. 7–8 (486), pp. 48–58, 2012.

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Kostornov, A.G., Fushchich, O.I., Gorban, V.F. et al. Effect of dry friction parameters on the tribosynthesis of secondary structures on composite antifriction iron-based material. Powder Metall Met Ceram 51, 412–419 (2012). https://doi.org/10.1007/s11106-012-9449-7

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  • DOI: https://doi.org/10.1007/s11106-012-9449-7

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