Wear modes in testing the antifriction layer of babbitt B83

Bykov, P. A.; Kalashnikov, I. E.; Kobeleva, L. I.; Katin, I. V.; Mikheev, R. S.

doi:10.22226/2410-3535-2022-3-219-224

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…The development and implementation of new materials is a complex task that requires research to confirm their effectiveness [13][14][15]. In the case of functional coatings, such experimental studies are often tests for hardness, roughness, and tribology [16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

A study of the characteristics of nanostructured valve coatings for operation in aggressive conditions

Nogmov

Oleinik

Tekeev

2022

JAMT

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The object of this study is composite multicomponent nanostructured coatings, which are used to increase the durability of the working surfaces of valves operated at critical facilities in the petrochemical and nuclear industries. The aim of thestudy is to experimentally determine the main characteristics of coatings Ti-TiN-(Ti, Mo, Al)N, Ti-CrN-(Cr, Mo, Al)N, Ti-Zr-ZrN-(Zr, Mo, Al)N obtained by the method of substance condensation by cathodevacuum-arc deposition with filtration of the microdroplet phase, and to select the most preferable characteristics for shutoff valves. To determine the coefficient of dry friction, tribological tests were carried out, instrumental indentation was used to establish the hardness of the samples, and the roughness was determined by the profile method. It was found that the best values of the studied characteristics, namely, indentation hardness (38.9 GPa) and roughness (average profile deviation is 0.242 μm), according to the test results, are samples coated with Cr-CrN-(Cr, Mo, Al)N ; according to the results of tribological tests, the Cr-CrN-(Cr, Mo, Al)N coating also has the lowest friction coefficient (0.0806). A promising direction for further research may be the development and study of new multicomponent nanocomposite coatings based on high-entropy alloys.

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Section: Introductionmentioning

confidence: 99%

A study of the characteristics of nanostructured valve coatings for operation in aggressive conditions

Nogmov

Oleinik

Tekeev

2022

JAMT

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Wear Regimes of Hot-Extruded Babbitt-Based Composites

Bykov,

Kalashnikov,

Kobeleva

et al. 2024

Inorg Mater

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Modes of wear of babbitt-based composite materials produced by hot pressing

Bykov,

Kalashnikov,

Kobeleva

et al. 2023

Zavod. lab., Diagn. mater.

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The effect of additives of Ti2NbAl intermetallic compound on the friction of B83 babbitt samples obtained by hot pressing was studied using optical, electron microscopy and EDS analysis. The structure, friction surface and wear products were studied. Tribological tests were carried out on a universal test system under conditions of dry sliding friction according to the scheme of axial loading: a steel bush against a disk of the material under study. The temperature values near the friction zone were recorded. The limits of application of the material depend on the mode and mechanism of wear occurring in the tribocontact. Changes in the mode and mechanism of wear were assessed by differences in the behavior of the friction coefficient, temperature, difference in the state of friction surfaces, wear intensity and wear products. The results obtained indicate the prospects of using the method of hot pressing of powder from the B83 alloy and discrete particles of the high-strength Ti2NbAl intermetallic phase to get composite materials with improved tribological properties compared to a babbitt alloy. The introduction of reinforcing high-modulus particles of intermetallic compounds changed the structure of the material and affected the friction processes in babbitt, pushing aside the onset of change in the mode of wear towards more severe friction conditions. A significant decrease in the wear intensity of babbitt-based composite materials compared to the original alloy makes it possible to predict an increase in the service life of tribo-units. The data obtained enable us to determine and recommend modes that improve the performance of tribo-nodes in the manufacture of both volumetric inserts and plain bearings made of B83 alloy and, moreover, to create new functionally organized layered compositions with enhanced tribotechnical properties with a base of structural steels and working surface layers not only using B83 babbitt, but also of composite materials based on B83 babbitt.

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Wear modes in testing the antifriction layer of babbitt B83

Cited by 3 publications

References 27 publications

A study of the characteristics of nanostructured valve coatings for operation in aggressive conditions

A study of the characteristics of nanostructured valve coatings for operation in aggressive conditions

Wear Regimes of Hot-Extruded Babbitt-Based Composites

Modes of wear of babbitt-based composite materials produced by hot pressing

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