X-RAY PHASE AND MICROSTRUCTURAL ANALYSIS OF HARDENING COATINGS OBTAINED BY SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS IN COMBINATION WITH HEATING OF A MIXTURE OF
DOI:
https://doi.org/10.31489/2022No2/6-12Keywords:
steel hardening, microstructure analysis, self-propagating high-temperature synthesis, coatings, highfrequency currents.Abstract
The paper describes the results of studies of hardening boride coatings obtained during the implementation
of the process of self-propagating high-temperature synthesis. These coatings were composite materials based on
aluminum oxide and boron. The obtained coatings were subjected to X-ray phase and microstructural analysis,
which showed the main components of the resulting compositions and made it possible to assess the thickness and
structure of the coating-base metal transition area. The different content of silicon and iron makes it possible to
assess the occurrence of surface chemical and metallurgical processes during self-propagating high-temperature
synthesis when heating of the base mixture samples on high-frequency current treatment. The expediency of using
high-frequency current treatment in combination with the process of self-propagating high-temperature synthesis
for better-quality spattering of the hardening coating is shown. The appearance of two areas in the coating with
different thickness and structure of the coating is established.
References
Campos I., Bautista O., Ramírez G., et al. Effect of boron paste thickness on the growth kinetics of Fe2B boride layers during the boriding process. Appl. Surf. Sci., 2005, Vol. 243, pp. 429–436.
Campos I., Palomar M., Amador A., et al. Evaluation of the corrosion resistance of iron boride coatings obtained by paste boriding process. Surf. Coat. Technol. 2006, Vol. 201, pp. 2438–2442.
Vorob’eva G.A., Remshev E.Yu. Effect of the Parameters of Aero thermo acoustic Treatment of 40Kh Steel on the Acoustic Emission Parameters. Russian Metallurgy. 2016, No. 3, pp. 215–218.
Krukovich M.G., Prusakov B.A., Sizov I.G. Plasticity of Boronized Layers. Springer Series in Materials Science, 2016, Vol. 237, ISBN 978-3-319-40012-9 (eBook).
Muhammad W. Boriding of high carbon high chromium cold work tool steel. Mater. Sci. Eng., 2014, Vol.60, pp. 1-6.
Calik A., Simsek M., Karakas M.S., Ucar N. Effect of boronizing on microhardness and wear resistance of steel AISI 1050 and chilled cast iron. Met. Sci. Heat Treat., 2014, Vol. 56, pp. 89 – 92.
Jurči P., Hudáková M. Diffusion boronizing of H11 hot work tool steel. Mater. Eng. Perform, 2011, Vol.20, pp. 1180-1187.
Balandin Yu. A. Surface hardening of die steel by diffusion boronizing, borocopperizing, and borochromizing in a fluidized bed. Met. Sci. Heat Treat., 2005, Vol. 47, pp. 103-106.
Bartkowska A., et al. Laser production of B-Ni complex layers. Surf.Coat.Technol., 2014, Vol.248, pp. 23-29.
Bartkowska A., Swadźba R., Popławski M., Bartkowski D. Microstructure, microhardness, phase analysis and chemical composition of laser remelted FeB-Fe2B surface layers produced on Vanadis-6 steel. Opt. Laser Technol., 2016, Vol. 86, pp. 115–125.
Safonov A.N. Special features of boronizing iron and steel using a continuous-wave CO2 laser. Met. Sci. Heat Treat. 1998, Vol. 40, No.1 - 2, pp. 6 – 10.
Dombrovskii Yu.M., Stepanov M.S. Creation of composite diffusion boride coatings with microarc hardening in powder media. Izv. Volgograd. Gos. Tekh. Univ., 2014, Vol.10, No.23, pp. 41–42.
Report on the Project no. AP08052699 Development and creation of an experimental site for strengthening heavy-loaded parts of soil-cutting machines using innovative plasma technology, Nur-Sultan, S.Seifullin Kazakh Agro Technical University, 2020, 89p.
Ishkov A.V., Malikov V.N. The study of the wear of the control knives of the straw chopper Journal of Physics: Conference Series. 2020, 1515 (5), pp. 052026.
