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The main regularities and features of steel surface alloying by means of compression plasma flows treatment of coating/substrate systems are investigated in this work. Ti, Zr, Mo and Cr were used as alloying elements. The thickness of the alloyed layer is about 8–15μm. The mixed layer contains iron solid solutions, nitrides and possesses mechanical properties improvement. The peculiarities of alloying...
Changes in the phase and element composition, tribological properties of the Zr/AISI M2 steel system after treatment with compression plasma flows are studied in this work. It was found that the treatment resulted in the formation of a mixed layer containing atoms of a coating (Zr), a substrate (M2 steel) and a plasma-forming gas (N). The zirconium concentration in the mixed layer depends on treatment...
The influence of the nitrogen compression plasma flow impact on the phase and element composition and tribological properties of AISI M2 and AISI T1 high-speed steels was investigated in this work. The bank capacitor initial voltage, the number of pulses and nitrogen pressure in the vacuum chamber varied during experiments, providing the change of energy deposited in the surface layer within the limits...
The microstructure, phase and element composition as well as mechanical properties of plasma mixed chromium/carbon steel have been investigated. Surface alloying of carbon steel with chromium has been performed with the use of the compressive plasma flow (CPF). In this technique, the action of relatively short, intense (∼100μs and 13–18J/cm 2 ) plasma pulses leads to a melting of the near-surface...
The changes in the phase and element composition in the near-surface layer of high-speed AISI T1 steel after treatment with a nitrogen compression plasma flow are studied in this work. It was found that the treatment resulted in the partial dissolution of hardening carbides and the formation of γ-Fe phase. The nitrogen concentration is strongly dependent on the treatment parameters: the nitrogen pressure...
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