Abstract
Abstract. The paper presents literary and own data on comparative behavior of tribological characteristics of bulk samples of pure metals (copper, nickel, titanium) in coarse-grained and nanostructured state processed by deformation and electrochemical methods. The friction tests have been carried out under the scheme ball – disk. The temperature dependence of titanium friction coefficient has been investigated. It has been shown, that at room and higher temperatures the decrease in friction coefficient and wear resistance of metals in nanostructure state can be observed in comparison with coarse-grained counterparts. The temperature dependence of friction coefficient changes according to the grain size. In nanostructure state rise in temperature as a rule leads to the reduction of tribological characteristics, and in coarse-grained state – to the increase. The analytical methods and approaches to modeling of the solid state contact have been considered in view of the surface atomic structure.
Highlights
The paper presents literary and own data on comparative behavior of tribological characteristics of bulk samples of pure metals in coarse-grained and nanostructured state processed by deformation and electrochemical methods
That at room and higher temperatures the decrease in friction coefficient and wear resistance of metals in nanostructure state can be observed in comparison with coarse-grained counterparts
The temperature dependence of friction coefficient changes according to the grain size
Summary
The paper presents literary and own data on comparative behavior of tribological characteristics of bulk samples of pure metals (copper, nickel, titanium) in coarse-grained and nanostructured state processed by deformation and electrochemical methods.
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Schedule a callMore From: Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy
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