Structure and defects evolution at temperature and activation treatments of the TiCr 2 intermetallic compound of Laves phase C36-type

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Abstract

In this work, microstructure and defect evolution at a temperature and activation treatment of the TiCr 2 intermetallic compound of Laves phase C36-type synthesized in the abnormal glow discharge plasma were investigated. The crystalline structure of the C36[sbnd]TiCr 2 powder crushed by hydrogenation-dehydrogenation (HD) method is characterized by the following lattice parameters: a = 4.932 Å and c = 16.059 Å. The dilatation of the crystal lattice under the hydrogenation at the HD crushing process leads to the formation of partial dislocations. For the first time ever the experimental value of the positron lifetime of the synthesized compound of the C36[sbnd]TiCr 2 Laves phase, this amounted to (141 ± 2) ps, established by the positron spectroscopy. The optimal activation parameters of the HD-crushing C36[sbnd]TiCr 2 powder were established: the temperature should be in the range from 450 to 500 °C, the exposure time in a hydrogen atmosphere at a pressure of (1–8) atm. must be at least 10 min.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Laves phases
Hydrogenation
hydrogenation
Intermetallics
intermetallics
Dehydrogenation
dehydrogenation
Chemical activation
activation
crushing
Defects
defects
Crushing
Positrons
positrons
Powders
Temperature
temperature
Glow discharges
crystal lattices

Keywords

  • Activation treatment
  • Defect structure
  • In situ synchrotron XRD
  • Laves phase
  • Positron annihilation spectroscopy
  • TiCr intermetallic compound

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

@article{aa0a8d9dcd7b4bceb72cd736e0362cbe,
title = "Structure and defects evolution at temperature and activation treatments of the TiCr 2 intermetallic compound of Laves phase C36-type",
abstract = "In this work, microstructure and defect evolution at a temperature and activation treatment of the TiCr 2 intermetallic compound of Laves phase C36-type synthesized in the abnormal glow discharge plasma were investigated. The crystalline structure of the C36[sbnd]TiCr 2 powder crushed by hydrogenation-dehydrogenation (HD) method is characterized by the following lattice parameters: a = 4.932 {\AA} and c = 16.059 {\AA}. The dilatation of the crystal lattice under the hydrogenation at the HD crushing process leads to the formation of partial dislocations. For the first time ever the experimental value of the positron lifetime of the synthesized compound of the C36[sbnd]TiCr 2 Laves phase, this amounted to (141 ± 2) ps, established by the positron spectroscopy. The optimal activation parameters of the HD-crushing C36[sbnd]TiCr 2 powder were established: the temperature should be in the range from 450 to 500 °C, the exposure time in a hydrogen atmosphere at a pressure of (1–8) atm. must be at least 10 min.",
keywords = "Activation treatment, Defect structure, In situ synchrotron XRD, Laves phase, Positron annihilation spectroscopy, TiCr intermetallic compound",
author = "Murashkina, {T. L.} and Syrtanov, {M. S.} and Laptev, {R. S.} and Stepanova, {E. N.} and Lider, {A. M.}",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.ijhydene.2019.02.154",
language = "English",
journal = "International Journal of Hydrogen Energy",
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T1 - Structure and defects evolution at temperature and activation treatments of the TiCr 2 intermetallic compound of Laves phase C36-type

AU - Murashkina, T. L.

AU - Syrtanov, M. S.

AU - Laptev, R. S.

AU - Stepanova, E. N.

AU - Lider, A. M.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - In this work, microstructure and defect evolution at a temperature and activation treatment of the TiCr 2 intermetallic compound of Laves phase C36-type synthesized in the abnormal glow discharge plasma were investigated. The crystalline structure of the C36[sbnd]TiCr 2 powder crushed by hydrogenation-dehydrogenation (HD) method is characterized by the following lattice parameters: a = 4.932 Å and c = 16.059 Å. The dilatation of the crystal lattice under the hydrogenation at the HD crushing process leads to the formation of partial dislocations. For the first time ever the experimental value of the positron lifetime of the synthesized compound of the C36[sbnd]TiCr 2 Laves phase, this amounted to (141 ± 2) ps, established by the positron spectroscopy. The optimal activation parameters of the HD-crushing C36[sbnd]TiCr 2 powder were established: the temperature should be in the range from 450 to 500 °C, the exposure time in a hydrogen atmosphere at a pressure of (1–8) atm. must be at least 10 min.

AB - In this work, microstructure and defect evolution at a temperature and activation treatment of the TiCr 2 intermetallic compound of Laves phase C36-type synthesized in the abnormal glow discharge plasma were investigated. The crystalline structure of the C36[sbnd]TiCr 2 powder crushed by hydrogenation-dehydrogenation (HD) method is characterized by the following lattice parameters: a = 4.932 Å and c = 16.059 Å. The dilatation of the crystal lattice under the hydrogenation at the HD crushing process leads to the formation of partial dislocations. For the first time ever the experimental value of the positron lifetime of the synthesized compound of the C36[sbnd]TiCr 2 Laves phase, this amounted to (141 ± 2) ps, established by the positron spectroscopy. The optimal activation parameters of the HD-crushing C36[sbnd]TiCr 2 powder were established: the temperature should be in the range from 450 to 500 °C, the exposure time in a hydrogen atmosphere at a pressure of (1–8) atm. must be at least 10 min.

KW - Activation treatment

KW - Defect structure

KW - In situ synchrotron XRD

KW - Laves phase

KW - Positron annihilation spectroscopy

KW - TiCr intermetallic compound

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