View in EDS

Comparison of hot corrosion behavior of Ti6Al4V and TiAlN-coated Ti6Al4V alloys in Na2SO4 -V2O5 environment.

Saved in:
Bibliographic Details
Title: Comparison of hot corrosion behavior of Ti6Al4V and TiAlN-coated Ti6Al4V alloys in Na2SO4 -V2O5 environment.
Authors: Ceper, Burak1 (AUTHOR) ceperburak@gantep.edu.tr, Ozgurluk, Ozge2,3 (AUTHOR), Calıs, Ibrahim4 (AUTHOR), Sunbul, Sefa Emre1 (AUTHOR), Ozgurluk, Yasin5 (AUTHOR), Tuncay, Mehmet Masum6 (AUTHOR)
Source: Surface & Coatings Technology. Mar2026, Vol. 523, pN.PAG-N.PAG. 1p.
Subjects: Corrosion resistance, Titanium alloys, High temperatures, Surface coatings, Oxidation, Aerospace materials, Corrosion engineering, Sodium sulfate
Abstract: Damage mechanisms such as oxidation and hot corrosion, which shorten life of the materials and system efficiency, occur in systems operating at high temperatures in the aviation, aerospace, automotive, and defense industries. In this study, Ti6Al4V and TiAlN-coated Ti6Al4V alloys, which have high specific strength and corrosion resistance, were subjected to isothermal hot corrosion tests at 900 °C in the presence of 45% Na 2 SO 4 and 55% V 2 O 5 hot corrosion salts for 1, 3, 5, and 10 h under open-to-atmosphere conditions. The changing phase, microstructure, and elemental distribution of the alloys were determined using advanced characterization techniques such as SEM, EDS, and XRD. Systems with a TiAlN coating layer were found to be more durable in short- and medium-term corrosive environments compared to the Ti6Al4V alloy. • TiAlN coatings were deposited on Ti6Al4V to assess hot corrosion resistance in Na 2 SO 4 –V 2 O 5 at 900 °C. • TiAlN acted as an effective diffusion barrier, reducing oxide scale growth and molten salt penetration. • Coated samples showed more stable oxides and improved surface integrity compared to uncoated Ti6Al4V. • TiAlN coatings significantly enhanced high-temperature corrosion resistance despite localized oxide formation. [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.)
Database: Engineering Source
Description
Abstract:Damage mechanisms such as oxidation and hot corrosion, which shorten life of the materials and system efficiency, occur in systems operating at high temperatures in the aviation, aerospace, automotive, and defense industries. In this study, Ti6Al4V and TiAlN-coated Ti6Al4V alloys, which have high specific strength and corrosion resistance, were subjected to isothermal hot corrosion tests at 900 °C in the presence of 45% Na 2 SO 4 and 55% V 2 O 5 hot corrosion salts for 1, 3, 5, and 10 h under open-to-atmosphere conditions. The changing phase, microstructure, and elemental distribution of the alloys were determined using advanced characterization techniques such as SEM, EDS, and XRD. Systems with a TiAlN coating layer were found to be more durable in short- and medium-term corrosive environments compared to the Ti6Al4V alloy. • TiAlN coatings were deposited on Ti6Al4V to assess hot corrosion resistance in Na 2 SO 4 –V 2 O 5 at 900 °C. • TiAlN acted as an effective diffusion barrier, reducing oxide scale growth and molten salt penetration. • Coated samples showed more stable oxides and improved surface integrity compared to uncoated Ti6Al4V. • TiAlN coatings significantly enhanced high-temperature corrosion resistance despite localized oxide formation. [ABSTRACT FROM AUTHOR]
ISSN:02578972
DOI:10.1016/j.surfcoat.2026.133246