Next Article in Journal
Heat Storage of Paraffin-Based Composite Phase Change Materials and Their Temperature Regulation of Underground Power Cable Systems
Next Article in Special Issue
Fabrication and Mechanical Properties of Cr2AlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS
Previous Article in Journal
Effect of Ni on the Suppression of Sn Whisker Formation in Sn-0.7Cu Solder Joint
Previous Article in Special Issue
Kinetically Limited Phase Formation of Pt-Ir Based Compositionally Complex Thin Films
Article

Assessment of Technological Capabilities for Forming Al-C-B System Coatings on Steel Surfaces by Electrospark Alloying Method

1
Laser Research Centre, Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Al. Tysiąclecia P.P. 7, 25-314 Kielce, Poland
2
The Department of Applied Material Science and Technology of Constructional Materials, Sumy State University, R. Korsakov Str., 2, 40007 Sumy, Ukraine
3
Technical Services Department, Sumy National Agrarian University, H. Kondratiieva Str., 160, 40021 Sumy, Ukraine
4
Department of Physical Chemistry of Inorganic Materials, Frantsevich Institute for Problems of Materials Science, Krzhizhanovsky Str. 3, 03142 Kyiv, Ukraine
*
Author to whom correspondence should be addressed.
Academic Editor: Helmut Riedl
Materials 2021, 14(4), 739; https://doi.org/10.3390/ma14040739
Received: 10 December 2020 / Revised: 29 January 2021 / Accepted: 1 February 2021 / Published: 5 February 2021
In this paper, the possibility of applying the electrospark alloying (ESA) method to obtain boron-containing coatings characterised by increased hardness and wear resistance is considered. A new method for producing such coatings is proposed. The method consists in applying grease containing aluminium powder and amorphous boron to the surface to be treated and subsequently processing the obtained surface using the ESA method by a graphite electrode. The microstructural analysis of the Al-C-B coatings on steel C40 showed that the surface layer consists of several zones, the number and parameters of which are determined by the energy conditions of the ESA process. Durametric studies showed that with an increase in the discharge energy influence, the microhardness values of both the upper strengthened layer and the diffusion zone increased to Wp = 0.13 J, Hµ = 6487 MPa, and Wp = 4.9 J, Hµ = 12350 MPa, respectively. The results of X-ray diffraction analysis indicate that at the discharge energies of 0.13 and 0.55 J, the phase composition of the coating is represented by solid solutions of body-centred cubic lattice (BCC) and face-centred cubic lattice (FCC). The coatings obtained at Wp = 4.9 J were characterised by the presence of intermetallics Fe4Al13 and borocementite Fe3 (CB) in addition to the solid solutions. The X-ray spectral analysis of the obtained coatings indicated that during the electrospark alloying process, the surface layers were saturated with aluminium, boron, and carbon. With increasing discharge energy, the diffusion zone increases; during the ESA process with the use of the discharge energy of 0.13 J for steel C40, the diffusion zone is 10–15 μm. When replacing a substrate made of steel C40 with the same one material but of steel C22, an increase in the thickness of the surface layer accompanied by a slight decrease in microhardness is observed as a result of processing with the use of the ESA method. There were simulated phase portraits of the Al-C-B coatings. It is shown that near the stationary points in the phase portraits, one can see either a slowing down of the evolution or a spiral twisting of the diffusion-process particle. View Full-Text
Keywords: electrospark alloying; coatings; microhardness; continuity; roughness; structure; X-ray diffraction analysis; X-ray spectral analysis electrospark alloying; coatings; microhardness; continuity; roughness; structure; X-ray diffraction analysis; X-ray spectral analysis
Show Figures

Figure 1

MDPI and ACS Style

Antoszewski, B.; Gaponova, O.P.; Tarelnyk, V.B.; Myslyvchenko, O.M.; Kurp, P.; Zhylenko, T.I.; Konoplianchenko, I. Assessment of Technological Capabilities for Forming Al-C-B System Coatings on Steel Surfaces by Electrospark Alloying Method. Materials 2021, 14, 739. https://doi.org/10.3390/ma14040739

AMA Style

Antoszewski B, Gaponova OP, Tarelnyk VB, Myslyvchenko OM, Kurp P, Zhylenko TI, Konoplianchenko I. Assessment of Technological Capabilities for Forming Al-C-B System Coatings on Steel Surfaces by Electrospark Alloying Method. Materials. 2021; 14(4):739. https://doi.org/10.3390/ma14040739

Chicago/Turabian Style

Antoszewski, Bogdan, Oksana P. Gaponova, Viacheslav B. Tarelnyk, Oleksandr M. Myslyvchenko, Piotr Kurp, Tetyana I. Zhylenko, and Ievgen Konoplianchenko. 2021. "Assessment of Technological Capabilities for Forming Al-C-B System Coatings on Steel Surfaces by Electrospark Alloying Method" Materials 14, no. 4: 739. https://doi.org/10.3390/ma14040739

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop