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Microstructural and durability evaluation of TiAlSiN coatings deposited on Ti6Al4V alloy under high-temperature conditions.

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Title: Microstructural and durability evaluation of TiAlSiN coatings deposited on Ti6Al4V alloy under high-temperature conditions.
Authors: Ceper, Burak1 (AUTHOR) ceperburak@gantep.edu.tr, Ozgurluk, Ozge2,3 (AUTHOR), Calıs, Ibrahim4 (AUTHOR), Icın, Kursat5 (AUTHOR), Ozgurluk, Yasin6 (AUTHOR), Tuncay, Mehmet Masum7 (AUTHOR)
Source: Surface & Coatings Technology. Jun2026, Vol. 529, pN.PAG-N.PAG. 1p.
Subjects: Protective coatings, Titanium alloys, Corrosion resistance, Scanning electron microscopy, Physical vapor deposition, X-ray diffraction, Energy dispersive X-ray spectroscopy, Oxidation
Abstract: Titanium-based alloys are widely used in the defense and aerospace industries due to their high specific strength. However, their resistance to oxidation and hot corrosion under high-temperature service conditions remains limited. In this study, a TiAlSiN coating with an approximate thickness of 1.5 μm was deposited on a Ti6Al4V alloy substrate by physical vapor deposition (PVD) to enhance its high-temperature performance. The coated specimens were subjected to isothermal oxidation tests at 900 °C for durations of 5, 25, and 50 h. In addition, isothermal hot corrosion tests were conducted for 1, 3, 5, and 10 h in the presence of molten salts composed of 45 wt% Na 2 SO 4 and 55 wt% V 2 O 5 The coating systems were comprehensively characterized before and after the oxidation and hot corrosion tests using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), elemental mapping, and X-ray diffraction (XRD) analyses. The results demonstrated that the TiAlSiN coating formed a stable and protective surface layer under high-temperature conditions, significantly improving the oxidation and hot corrosion resistance of the Ti6Al4V alloy. These findings indicate that TiAlSiN-coated Ti6Al4V alloys exhibit promising potential for high-temperature applications, particularly in the defense and aerospace sectors. • TiAlSiN coatings (∼1.5 μm) were deposited on Ti6Al4V alloy using PVD to enhance high-temperature durability. • Coatings were systematically evaluated under 900 °C isothermal oxidation and Na 2 SO 4 –V 2 O 5 molten salt hot corrosion. • SEM, EDS, elemental mapping, and XRD analyses revealed the formation of a stable and protective surface layer. • Si addition in TiAlSiN coatings significantly improves thermal stability and oxidation/hot corrosion resistance. • Results provide practical guidance for designing durable coatings for aerospace and defense applications. [ABSTRACT FROM AUTHOR]
Copyright of Surface & Coatings Technology 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.)
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DbLabel: Engineering Source
An: 193368713
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  Label: Title
  Group: Ti
  Data: Microstructural and durability evaluation of TiAlSiN coatings deposited on Ti6Al4V alloy under high-temperature conditions.
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  Data: <searchLink fieldCode="AR" term="%22Ceper%2C+Burak%22">Ceper, Burak</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ceperburak@gantep.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Ozgurluk%2C+Ozge%22">Ozgurluk, Ozge</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Calıs%2C+Ibrahim%22">Calıs, Ibrahim</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Icın%2C+Kursat%22">Icın, Kursat</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ozgurluk%2C+Yasin%22">Ozgurluk, Yasin</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tuncay%2C+Mehmet+Masum%22">Tuncay, Mehmet Masum</searchLink><relatesTo>7</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Surface+%26+Coatings+Technology%22">Surface & Coatings Technology</searchLink>. Jun2026, Vol. 529, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Protective+coatings%22">Protective coatings</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+alloys%22">Titanium alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Corrosion+resistance%22">Corrosion resistance</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+vapor+deposition%22">Physical vapor deposition</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+dispersive+X-ray+spectroscopy%22">Energy dispersive X-ray spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation%22">Oxidation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Titanium-based alloys are widely used in the defense and aerospace industries due to their high specific strength. However, their resistance to oxidation and hot corrosion under high-temperature service conditions remains limited. In this study, a TiAlSiN coating with an approximate thickness of 1.5 μm was deposited on a Ti6Al4V alloy substrate by physical vapor deposition (PVD) to enhance its high-temperature performance. The coated specimens were subjected to isothermal oxidation tests at 900 °C for durations of 5, 25, and 50 h. In addition, isothermal hot corrosion tests were conducted for 1, 3, 5, and 10 h in the presence of molten salts composed of 45 wt% Na 2 SO 4 and 55 wt% V 2 O 5 The coating systems were comprehensively characterized before and after the oxidation and hot corrosion tests using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), elemental mapping, and X-ray diffraction (XRD) analyses. The results demonstrated that the TiAlSiN coating formed a stable and protective surface layer under high-temperature conditions, significantly improving the oxidation and hot corrosion resistance of the Ti6Al4V alloy. These findings indicate that TiAlSiN-coated Ti6Al4V alloys exhibit promising potential for high-temperature applications, particularly in the defense and aerospace sectors. • TiAlSiN coatings (∼1.5 μm) were deposited on Ti6Al4V alloy using PVD to enhance high-temperature durability. • Coatings were systematically evaluated under 900 °C isothermal oxidation and Na 2 SO 4 –V 2 O 5 molten salt hot corrosion. • SEM, EDS, elemental mapping, and XRD analyses revealed the formation of a stable and protective surface layer. • Si addition in TiAlSiN coatings significantly improves thermal stability and oxidation/hot corrosion resistance. • Results provide practical guidance for designing durable coatings for aerospace and defense applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Surface & Coatings Technology 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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    Identifiers:
      – Type: doi
        Value: 10.1016/j.surfcoat.2026.133513
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Protective coatings
        Type: general
      – SubjectFull: Titanium alloys
        Type: general
      – SubjectFull: Corrosion resistance
        Type: general
      – SubjectFull: Scanning electron microscopy
        Type: general
      – SubjectFull: Physical vapor deposition
        Type: general
      – SubjectFull: X-ray diffraction
        Type: general
      – SubjectFull: Energy dispersive X-ray spectroscopy
        Type: general
      – SubjectFull: Oxidation
        Type: general
    Titles:
      – TitleFull: Microstructural and durability evaluation of TiAlSiN coatings deposited on Ti6Al4V alloy under high-temperature conditions.
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            NameFull: Ceper, Burak
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            NameFull: Ozgurluk, Ozge
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            NameFull: Calıs, Ibrahim
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            NameFull: Ozgurluk, Yasin
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          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 02578972
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              Value: 529
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