Surface nitriding and alloying of steels with Ti and Nb atoms by compression plasma flows treatment

N. N. Cherenda, V. V. Uglov, A. K. Kuleshov, V. M. Astashynski, A. M. Kuzmitski

Результат исследований: Материалы для журналаСтатья

7 Цитирования (Scopus)

Выдержка

Phase and element composition, microhardness of Ti/steel and Nb/steel systems treated by compression plasma flows have been investigated in this work. Auger electron spectroscopy, X-ray diffraction, scanning electron microscopy, energy-dispersion X-ray microanalysis and Vickers microhardness measurements were used for sample characterization. The findings showed that treatment of a "coating/steel" system by compression plasma flows generated in nitrogen atmosphere allowed alloying of the surface layer of steel by the coating element and nitriding it simultaneously. The variation of the pulses number (1-6) resulted in change of the alloying element concentration and formation of a number of phases in the alloyed layer: Fe2Ti, a supersaturated solid solution α-Fe(Ti,C) in the Ti alloyed layer and a supersaturated solid solution α-Fe(Nb,C) in the Nb alloyed layer. The formation of Ti(C,N) and Nb(C,N) carbonitrides with fcc crystal structure at the surface was also found. The change of phase composition and quenching effects resulted in substantial increase of microhardness.

Язык оригиналаАнглийский
Страницы (с-по)170-177
Число страниц8
ЖурналVacuum
Том129
DOI
СостояниеПринято/в печати - 7 окт 2015

Отпечаток

Plasma flow
nitriding
Steel
Nitriding
magnetohydrodynamic flow
Alloying
alloying
steels
Microhardness
microhardness
Atoms
atoms
Solid solutions
solid solutions
coatings
Coatings
Carbon nitride
Microanalysis
Auger electron spectroscopy
Alloying elements

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Instrumentation
  • Surfaces, Coatings and Films

Цитировать

Surface nitriding and alloying of steels with Ti and Nb atoms by compression plasma flows treatment. / Cherenda, N. N.; Uglov, V. V.; Kuleshov, A. K.; Astashynski, V. M.; Kuzmitski, A. M.

В: Vacuum, Том 129, 07.10.2015, стр. 170-177.

Результат исследований: Материалы для журналаСтатья

Cherenda, N. N. ; Uglov, V. V. ; Kuleshov, A. K. ; Astashynski, V. M. ; Kuzmitski, A. M. / Surface nitriding and alloying of steels with Ti and Nb atoms by compression plasma flows treatment. В: Vacuum. 2015 ; Том 129. стр. 170-177.
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AU - Uglov, V. V.

AU - Kuleshov, A. K.

AU - Astashynski, V. M.

AU - Kuzmitski, A. M.

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AB - Phase and element composition, microhardness of Ti/steel and Nb/steel systems treated by compression plasma flows have been investigated in this work. Auger electron spectroscopy, X-ray diffraction, scanning electron microscopy, energy-dispersion X-ray microanalysis and Vickers microhardness measurements were used for sample characterization. The findings showed that treatment of a "coating/steel" system by compression plasma flows generated in nitrogen atmosphere allowed alloying of the surface layer of steel by the coating element and nitriding it simultaneously. The variation of the pulses number (1-6) resulted in change of the alloying element concentration and formation of a number of phases in the alloyed layer: Fe2Ti, a supersaturated solid solution α-Fe(Ti,C) in the Ti alloyed layer and a supersaturated solid solution α-Fe(Nb,C) in the Nb alloyed layer. The formation of Ti(C,N) and Nb(C,N) carbonitrides with fcc crystal structure at the surface was also found. The change of phase composition and quenching effects resulted in substantial increase of microhardness.

KW - Alloying

KW - Carbon steel

KW - Compression plasma flow

KW - Microhardness

KW - Niobium

KW - Nitriding

KW - Titanium

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