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Centimetric CrSi2 crystal grown by the vertical gradient Freeze method.

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Title: Centimetric CrSi2 crystal grown by the vertical gradient Freeze method.
Authors: Moll, A.1 (AUTHOR) moll.adrien@orange.fr, Laborde, S.1 (AUTHOR), Barou, F.2 (AUTHOR), Beaudhuin, M.1 (AUTHOR) mickael.beaudhuin@umontpellier.fr
Source: Journal of Crystal Growth. Mar2020, Vol. 534, pN.PAG-N.PAG. 1p.
Subjects: Boron, Boron nitride, Liquid alloys, Single crystals, Boriding, Boron compounds, Crystals
Abstract: • Vertical Gradient Freeze method enables to grow CrSi 2 ingots. • High quality single crystal was obtained with a mosaicity lower than 2°. • The growth conditions are 10 mm/h, 0.6 K/mm in pBN crucible. • SiO 2 BN-coated crucibles are not suitable to grow CrSi 2 in presence of carbon. • Increasing the growth rate favor random grain orientation of polycrystalline CrSi 2. CrSi 2 ingots were grown by the Vertical Gradient Freeze (VGF) method in silica (SiO 2) crucibles with boron nitride (BN) coating and in pyrolytic boron nitride (pBN) crucibles in order to minimize the sticking and the reaction with the molten Cr-Si alloy. High quality chromium disilicide single crystal was obtained with a mosaicity of 1–2° using pBN crucible with a thermal gradient of 0.6 K/mm and a growth rate of 10 mm/h. To recycle the crucibles and so to reduce the production costs, pBN crucibles were cleaned with hydrofluoric acid solution. As a result of this treatment, it was not possible to obtain CrSi 2 single crystals due to a modification of the crucible surface and the subsequent increase of boron compounds in the melt during the growth. The effect of the growth conditions on the microstructure of polycrystalline sample was also investigated using the texture analysis technique. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Crystal Growth is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 141775490
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Centimetric CrSi2 crystal grown by the vertical gradient Freeze method.
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  Data: <searchLink fieldCode="AR" term="%22Moll%2C+A%2E%22">Moll, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> moll.adrien@orange.fr</i><br /><searchLink fieldCode="AR" term="%22Laborde%2C+S%2E%22">Laborde, S.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Barou%2C+F%2E%22">Barou, F.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Beaudhuin%2C+M%2E%22">Beaudhuin, M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mickael.beaudhuin@umontpellier.fr</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Crystal+Growth%22">Journal of Crystal Growth</searchLink>. Mar2020, Vol. 534, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Boron%22">Boron</searchLink><br /><searchLink fieldCode="DE" term="%22Boron+nitride%22">Boron nitride</searchLink><br /><searchLink fieldCode="DE" term="%22Liquid+alloys%22">Liquid alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Single+crystals%22">Single crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Boriding%22">Boriding</searchLink><br /><searchLink fieldCode="DE" term="%22Boron+compounds%22">Boron compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Crystals%22">Crystals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Vertical Gradient Freeze method enables to grow CrSi 2 ingots. • High quality single crystal was obtained with a mosaicity lower than 2°. • The growth conditions are 10 mm/h, 0.6 K/mm in pBN crucible. • SiO 2 BN-coated crucibles are not suitable to grow CrSi 2 in presence of carbon. • Increasing the growth rate favor random grain orientation of polycrystalline CrSi 2. CrSi 2 ingots were grown by the Vertical Gradient Freeze (VGF) method in silica (SiO 2) crucibles with boron nitride (BN) coating and in pyrolytic boron nitride (pBN) crucibles in order to minimize the sticking and the reaction with the molten Cr-Si alloy. High quality chromium disilicide single crystal was obtained with a mosaicity of 1–2° using pBN crucible with a thermal gradient of 0.6 K/mm and a growth rate of 10 mm/h. To recycle the crucibles and so to reduce the production costs, pBN crucibles were cleaned with hydrofluoric acid solution. As a result of this treatment, it was not possible to obtain CrSi 2 single crystals due to a modification of the crucible surface and the subsequent increase of boron compounds in the melt during the growth. The effect of the growth conditions on the microstructure of polycrystalline sample was also investigated using the texture analysis technique. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Crystal Growth is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jcrysgro.2020.125505
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
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      – SubjectFull: Boron
        Type: general
      – SubjectFull: Boron nitride
        Type: general
      – SubjectFull: Liquid alloys
        Type: general
      – SubjectFull: Single crystals
        Type: general
      – SubjectFull: Boriding
        Type: general
      – SubjectFull: Boron compounds
        Type: general
      – SubjectFull: Crystals
        Type: general
    Titles:
      – TitleFull: Centimetric CrSi2 crystal grown by the vertical gradient Freeze method.
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            NameFull: Moll, A.
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            NameFull: Laborde, S.
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            NameFull: Barou, F.
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            – D: 15
              M: 03
              Text: Mar2020
              Type: published
              Y: 2020
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              Value: 534
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