Synthesis of TiC–NiCrBSi Binder Alloy Composite Powders for Cladding and Deposition of Wear-Resistant Coatings

G. A. Pribytkov, I. A. Firsina, V. V. Korzhova, M. G. Krinitcyn, A. A. Polyanskaya

Research output: Contribution to journalArticle

Abstract

TiC–NiCrBSi binder metal matrix composites are fabricated by self-propagating high-temperature synthesis (SHS) in reaction powder mixtures of titanium, carbon (carbon black), and NiCrBSi alloy. It is established that stable combustion in a steady-state mode is possible with the content of a thermally inert metal binder in reaction mixtures up to 50%. Porous SHS cakes are crushed easily for subsequent separation by screening the composite-powder fraction necessary for the coating deposition. The synthesis products are studied by optical and scanning electron microscopy, X-ray diffraction (XRD), and electron probe microanalysis (EPMA). It is found that the average size of carbide inclusions in the composite structure depends on the content of thermally inert alloy powder in reaction mixtures and can be intentionally controlled in a wide range. The microhardness of granules of the composite powder formed by crushing SHS cakes decreases monotonically with an increase in the content of the metal binder softer than titanium carbide. The crystal lattice parameter of titanium carbide determined by XRD turned out considerably smaller than known values for equiatomic titanium carbide. It is established using local EPMA of carbide inclusions in the composite structure that the carbon-to-titanium weight ratio is 0.21 instead of 0.25 for equiatomic titanium carbide. Iron and silicon concentrations in carbide are negligibly low, those of oxygen and nickel are lower than 1%, and that of chromium is 2.5 wt %. It is concluded based on the analysis of the known data on the influence of all listed impurities on the titanium carbide lattice that the deficit of carbon is the main cause of a decrease in the lattice parameter.

Original languageEnglish
Pages (from-to)282-289
Number of pages8
JournalRussian Journal of Non-Ferrous Metals
Volume60
Issue number3
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Titanium carbide
Powders
Binders
Wear of materials
Coatings
Composite materials
Carbides
Carbon
Metals
Electron probe microanalysis
Composite structures
Titanium
Lattice constants
Soot
X ray diffraction
Crushing
Chromium
Silicon
Carbon black
Nickel

Keywords

  • dispersity
  • elemental composition
  • hardness
  • lattice parameter
  • metal matrix composite
  • self-propagating high-temperature synthesis
  • structure
  • titanium carbide

ASJC Scopus subject areas

  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Metals and Alloys

Cite this

Synthesis of TiC–NiCrBSi Binder Alloy Composite Powders for Cladding and Deposition of Wear-Resistant Coatings. / Pribytkov, G. A.; Firsina, I. A.; Korzhova, V. V.; Krinitcyn, M. G.; Polyanskaya, A. A.

In: Russian Journal of Non-Ferrous Metals, Vol. 60, No. 3, 01.05.2019, p. 282-289.

Research output: Contribution to journalArticle

Pribytkov, G. A. ; Firsina, I. A. ; Korzhova, V. V. ; Krinitcyn, M. G. ; Polyanskaya, A. A. / Synthesis of TiC–NiCrBSi Binder Alloy Composite Powders for Cladding and Deposition of Wear-Resistant Coatings. In: Russian Journal of Non-Ferrous Metals. 2019 ; Vol. 60, No. 3. pp. 282-289.
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abstract = "TiC–NiCrBSi binder metal matrix composites are fabricated by self-propagating high-temperature synthesis (SHS) in reaction powder mixtures of titanium, carbon (carbon black), and NiCrBSi alloy. It is established that stable combustion in a steady-state mode is possible with the content of a thermally inert metal binder in reaction mixtures up to 50{\%}. Porous SHS cakes are crushed easily for subsequent separation by screening the composite-powder fraction necessary for the coating deposition. The synthesis products are studied by optical and scanning electron microscopy, X-ray diffraction (XRD), and electron probe microanalysis (EPMA). It is found that the average size of carbide inclusions in the composite structure depends on the content of thermally inert alloy powder in reaction mixtures and can be intentionally controlled in a wide range. The microhardness of granules of the composite powder formed by crushing SHS cakes decreases monotonically with an increase in the content of the metal binder softer than titanium carbide. The crystal lattice parameter of titanium carbide determined by XRD turned out considerably smaller than known values for equiatomic titanium carbide. It is established using local EPMA of carbide inclusions in the composite structure that the carbon-to-titanium weight ratio is 0.21 instead of 0.25 for equiatomic titanium carbide. Iron and silicon concentrations in carbide are negligibly low, those of oxygen and nickel are lower than 1{\%}, and that of chromium is 2.5 wt {\%}. It is concluded based on the analysis of the known data on the influence of all listed impurities on the titanium carbide lattice that the deficit of carbon is the main cause of a decrease in the lattice parameter.",
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N2 - TiC–NiCrBSi binder metal matrix composites are fabricated by self-propagating high-temperature synthesis (SHS) in reaction powder mixtures of titanium, carbon (carbon black), and NiCrBSi alloy. It is established that stable combustion in a steady-state mode is possible with the content of a thermally inert metal binder in reaction mixtures up to 50%. Porous SHS cakes are crushed easily for subsequent separation by screening the composite-powder fraction necessary for the coating deposition. The synthesis products are studied by optical and scanning electron microscopy, X-ray diffraction (XRD), and electron probe microanalysis (EPMA). It is found that the average size of carbide inclusions in the composite structure depends on the content of thermally inert alloy powder in reaction mixtures and can be intentionally controlled in a wide range. The microhardness of granules of the composite powder formed by crushing SHS cakes decreases monotonically with an increase in the content of the metal binder softer than titanium carbide. The crystal lattice parameter of titanium carbide determined by XRD turned out considerably smaller than known values for equiatomic titanium carbide. It is established using local EPMA of carbide inclusions in the composite structure that the carbon-to-titanium weight ratio is 0.21 instead of 0.25 for equiatomic titanium carbide. Iron and silicon concentrations in carbide are negligibly low, those of oxygen and nickel are lower than 1%, and that of chromium is 2.5 wt %. It is concluded based on the analysis of the known data on the influence of all listed impurities on the titanium carbide lattice that the deficit of carbon is the main cause of a decrease in the lattice parameter.

AB - TiC–NiCrBSi binder metal matrix composites are fabricated by self-propagating high-temperature synthesis (SHS) in reaction powder mixtures of titanium, carbon (carbon black), and NiCrBSi alloy. It is established that stable combustion in a steady-state mode is possible with the content of a thermally inert metal binder in reaction mixtures up to 50%. Porous SHS cakes are crushed easily for subsequent separation by screening the composite-powder fraction necessary for the coating deposition. The synthesis products are studied by optical and scanning electron microscopy, X-ray diffraction (XRD), and electron probe microanalysis (EPMA). It is found that the average size of carbide inclusions in the composite structure depends on the content of thermally inert alloy powder in reaction mixtures and can be intentionally controlled in a wide range. The microhardness of granules of the composite powder formed by crushing SHS cakes decreases monotonically with an increase in the content of the metal binder softer than titanium carbide. The crystal lattice parameter of titanium carbide determined by XRD turned out considerably smaller than known values for equiatomic titanium carbide. It is established using local EPMA of carbide inclusions in the composite structure that the carbon-to-titanium weight ratio is 0.21 instead of 0.25 for equiatomic titanium carbide. Iron and silicon concentrations in carbide are negligibly low, those of oxygen and nickel are lower than 1%, and that of chromium is 2.5 wt %. It is concluded based on the analysis of the known data on the influence of all listed impurities on the titanium carbide lattice that the deficit of carbon is the main cause of a decrease in the lattice parameter.

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