Structure and phase composition of Nb/Ti system subjected to compression plasma flow impact

Abstract

The results of structure, phase composition and mechanical properties of titanium alloyed with niobium atoms by means of compression plasma flow (CPF) impact on the "Nb coating (2.5μm)/Ti substrate" system are presented. The CPF treatment with the pulse duration of 100μs was carried out at the absorbed energy density of 13J/cm² which is sufficient for melting of both niobium coating and some part of titanium substrate. The cross-section analysis by means of scanning electron microscopy revealed the formation of the alloyed layer with the thickness of 14μm and relatively uniform distribution of Nb along the depth (Nb concentration obtained by means of the EDX analysis was about 17at.%). Alloying of titanium with Nb atoms resulted in stabilization of a high-temperature β-Ti phase as a β-Ti(Nb) solid solution. In the near surface layer the niobium interacted with impurity atoms (N and C) providing carbonitride (Nb(C,N) and carbide and Nb₂C) possible formation. Phase transformation in the surface layer of titanium led to microhardness increase up to 4.7GPa.

Original language	English
Pages (from-to)	183-189
Number of pages	7
Journal	Surface and Coatings Technology
Volume	278
DOIs	https://doi.org/10.1016/j.surfcoat.2015.08.014
Publication status	Published - 25 Sep 2015

Keywords

Alloying
Compression plasma flow
Microhardness
Niobium
Phase composition
Solid solution
Structure
Surface morphology
Titanium

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry
Surfaces, Coatings and Films
Surfaces and Interfaces

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10.1016/j.surfcoat.2015.08.014

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Shymanski, V. I., Cherenda, N. N., Uglov, V. V., Astashynski, V. M., & Kuzmitski, A. M. (2015). Structure and phase composition of Nb/Ti system subjected to compression plasma flow impact. Surface and Coatings Technology, 278, 183-189. https://doi.org/10.1016/j.surfcoat.2015.08.014

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title = "Structure and phase composition of Nb/Ti system subjected to compression plasma flow impact",

abstract = "The results of structure, phase composition and mechanical properties of titanium alloyed with niobium atoms by means of compression plasma flow (CPF) impact on the {"}Nb coating (2.5μm)/Ti substrate{"} system are presented. The CPF treatment with the pulse duration of 100μs was carried out at the absorbed energy density of 13J/cm2 which is sufficient for melting of both niobium coating and some part of titanium substrate. The cross-section analysis by means of scanning electron microscopy revealed the formation of the alloyed layer with the thickness of 14μm and relatively uniform distribution of Nb along the depth (Nb concentration obtained by means of the EDX analysis was about 17at.%). Alloying of titanium with Nb atoms resulted in stabilization of a high-temperature β-Ti phase as a β-Ti(Nb) solid solution. In the near surface layer the niobium interacted with impurity atoms (N and C) providing carbonitride (Nb(C,N) and carbide and Nb2C) possible formation. Phase transformation in the surface layer of titanium led to microhardness increase up to 4.7GPa.",

keywords = "Alloying, Compression plasma flow, Microhardness, Niobium, Phase composition, Solid solution, Structure, Surface morphology, Titanium",

author = "Shymanski, {V. I.} and Cherenda, {N. N.} and Uglov, {V. V.} and Astashynski, {V. M.} and Kuzmitski, {A. M.}",

year = "2015",

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journal = "Surface and Coatings Technology",

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T1 - Structure and phase composition of Nb/Ti system subjected to compression plasma flow impact

AU - Shymanski, V. I.

AU - Cherenda, N. N.

AU - Uglov, V. V.

AU - Astashynski, V. M.

AU - Kuzmitski, A. M.

PY - 2015/9/25

Y1 - 2015/9/25

N2 - The results of structure, phase composition and mechanical properties of titanium alloyed with niobium atoms by means of compression plasma flow (CPF) impact on the "Nb coating (2.5μm)/Ti substrate" system are presented. The CPF treatment with the pulse duration of 100μs was carried out at the absorbed energy density of 13J/cm2 which is sufficient for melting of both niobium coating and some part of titanium substrate. The cross-section analysis by means of scanning electron microscopy revealed the formation of the alloyed layer with the thickness of 14μm and relatively uniform distribution of Nb along the depth (Nb concentration obtained by means of the EDX analysis was about 17at.%). Alloying of titanium with Nb atoms resulted in stabilization of a high-temperature β-Ti phase as a β-Ti(Nb) solid solution. In the near surface layer the niobium interacted with impurity atoms (N and C) providing carbonitride (Nb(C,N) and carbide and Nb2C) possible formation. Phase transformation in the surface layer of titanium led to microhardness increase up to 4.7GPa.

AB - The results of structure, phase composition and mechanical properties of titanium alloyed with niobium atoms by means of compression plasma flow (CPF) impact on the "Nb coating (2.5μm)/Ti substrate" system are presented. The CPF treatment with the pulse duration of 100μs was carried out at the absorbed energy density of 13J/cm2 which is sufficient for melting of both niobium coating and some part of titanium substrate. The cross-section analysis by means of scanning electron microscopy revealed the formation of the alloyed layer with the thickness of 14μm and relatively uniform distribution of Nb along the depth (Nb concentration obtained by means of the EDX analysis was about 17at.%). Alloying of titanium with Nb atoms resulted in stabilization of a high-temperature β-Ti phase as a β-Ti(Nb) solid solution. In the near surface layer the niobium interacted with impurity atoms (N and C) providing carbonitride (Nb(C,N) and carbide and Nb2C) possible formation. Phase transformation in the surface layer of titanium led to microhardness increase up to 4.7GPa.

KW - Alloying

KW - Compression plasma flow

KW - Microhardness

KW - Niobium

KW - Phase composition

KW - Solid solution

KW - Structure

KW - Surface morphology

KW - Titanium

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