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Kinetics of formation of carbide-chromium coatings on structural steels obtained by complex chemical thermal treatment
https://doi.org/10.22349/1994-6716-2025-123-3-21-30
Abstract
The paper considers the kinetics of formation of coatings based on chromium carbides obtained by the technology of complex chemical thermal treatment (CTT) on steels St3, 40Kh, 40Kh13, 12Kh18N10T. CTT consisted in preliminary cementation in vacuum and subsequent diffusion alloying with chromium in the medium of fusible liquid metal solutions (DALMS). As a result of the research, it was found that the concentration of chromium on the surface of the coated samples, the coating thickness and chromium distribution, the phase composition of the coatings were influenced by the material grade, temperature and duration of DALMS. The coatings consisted of Cr7C3 carbides or Cr7C3 + Cr23C6. The release of Cr23C6 chromium carbides was observed at DALMS temperatures of 1050°C and 1070°C in the range of 180 to 480 minutes.
About the Authors
E. E. Bobylyov
Kuban State Technological University,
Russian Federation
Russian Federation
Cand Sc.
2 Moskovskaya St, 350072 Krasnodar Region, Krasnodar
I. D. Storozhenko
Kuban State Technological University,
Russian Federation
Russian Federation
2 Moskovskaya St, 350072 Krasnodar Region, Krasnodar
R. A. Popov
Kuban State Technological University,
Russian Federation
Russian Federation
2 Moskovskaya St, 350072 Krasnodar Region, Krasnodar
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For citations:
Bobylyov E.E., Storozhenko I.D., Popov R.A. Kinetics of formation of carbide-chromium coatings on structural steels obtained by complex chemical thermal treatment. Voprosy Materialovedeniya. 2025;(3(123)):21-30. (In Russ.) https://doi.org/10.22349/1994-6716-2025-123-3-21-30
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