Research Papers: Coatings and Solid Lubricants

Chemical and Phase Composition of the Friction Surfaces Fe–Mn–C–B–Si–Ni–Cr Hardfacing Coatings

[+] Author and Article Information
Mykhaylo I. Pashechko

Fundamentals of Technology Faculty,
Lublin University of Technology,
38 Nadbystrzycka Street,
Lublin 20-618, Poland
e-mail: mpashechko@hotmail.com

Krzysztof Dziedzic

Electrical Engineering and Computer
Science Faculty,
Institute of Computer Science,
Lublin University of Technology,
36B Nadbystrzycka Street,
Lublin 20-618, Poland
e-mail: k.dziedzic@pollub.pl

Ewaryst Mendyk

Faculty of Chemistry,
Maria Curie-Sklodowska University,
3 Square Maria Curie-Sklodowska,
Lublin 20-031, Poland
e-mail: emendyk@poczta.umcs.lublin.pl

Jerzy Jozwik

Mechanical Engineering Faculty,
Lublin University of Technology,
36 Nadbystrzycka Street,
Lublin 20-816, Poland
e-mail: j.jozwik@pollub.pl

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received December 18, 2016; final manuscript received August 23, 2017; published online October 9, 2017. Assoc. Editor: Dae-Eun Kim.

J. Tribol 140(2), 021302 (Oct 09, 2017) (5 pages) Paper No: TRIB-16-1390; doi: 10.1115/1.4037953 History: Received December 18, 2016; Revised August 23, 2017

The paper presents the results of an X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) study of chemical and phase composition of the friction surfaces Fe–Mn–C–B–Si–Ni–Cr hardfacing coatings. The alloy was used as a core mixture to produce flux-cored wire of 2.4 mm in diameter. The coating was deposited by gas metal arc welding using CO2 as a shielding gas. The tribological examination was conducted in a ball on disk system with a load of 20 N under dry friction conditions. A XPS were used to examine the structures on the friction surface and depend on depth 5, 10, 15, 20, 50, 100, 200, and 6000 nm. The segregation of C, B, and Si atoms was observed in the process of the friction. The presence of compounds such as oxides (B2O3, SiO2, Cr2O3), carbides (Fe3C, Cr7C3), and borides (FeB, Fe2B) was detected on the surface and in the subsurface layer of the Fe–Mn–C–B–Si–Ni–Cr coating. The formation of these structures increases the wear resistance of composite coatings.

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Fig. 1

Wear rate and friction coefficient

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Fig. 2

Surface view of Fe–Mn–C–B–Si–Ni–Cr coating after friction: magnification ×50,000 (a) and magnification ×350,000 (b)

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Fig. 3

XPS spectra of C 1s (a) and oxygen O 1s (b) bands recorded at sample surface and at depths: 5, 10, 15, 20, 50, 100, 200, and 600 nm, after the deconvolution procedure. CPS—counts per second. The intensity axis (CPS) is normalized.

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Fig. 4

XPS spectra of Fe 2p (a) and Cr 2p (b) photoelectron transition at depths: 5, 10, 15, 20, 50, 100, 200, and 600 nm. CPS—counts per second. The intensity axis is normalized.

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Fig. 5

Detailed XPS spectra for boron B 1s (a) and silicon Si 2s photoelectrons (b). CPS—counts per second. The intensity axis is normalized.




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