Oxidation behaviour of an intermetallic Ti–Al–Cr–Zr bond coat on a γ–TiAl based TNB alloy with 7YSZ thermal barrier coating

Laska, Nadine; Watermeyer, Philipp; Koliotassis, Lisa; Braun, Reinhold

doi:10.1080/09603409.2017.1404691

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Similarly, highly adherent TBCs made of a NiCrAlY bond coat and a YSZ top coat, together with a thin Ti adhesion layer between the substrate and the bond coat, have been tested on the Ti-6Al-4V alloy [ 140 ]. Titanium aluminide TiAl 3 or other intermetallic materials like Ti-Al-Cr-Zr [ 263 , 264 ] have been also investigated as bond coats for YSZ top coats, with the aim to improve the high-temperature oxidation protection of Ti alloys and the adhesion of the thermal barrier coatings. However, degradation and formation of oxide layers at the interfaces, associated with cracking and delamination effects, have been observed at high temperature due to interdiffusion phenomena between the alloy and the coatings, thus indicating the need of additional diffusion barrier layers [ 261 ].…”

Section: Coatings For Ni- and Ti-based Alloys For Aerospace Enginementioning

confidence: 99%

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

et al. 2021

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Several applications where extreme conditions occur require the use of alloys often containing many critical elements. Due to the ever increasing prices of critical raw materials (CRMs) linked to their high supply risk, and because of their fundamental and large utilization in high tech products and applications, it is extremely important to find viable solutions to save CRMs usage. Apart from increasing processes’ efficiency, substitution, and recycling, one of the alternatives to preserve an alloy and increase its operating lifetime, thus saving the CRMs needed for its manufacturing, is to protect it by a suitable coating or a surface treatment. This review presents the most recent trends in coatings for application in high temperature alloys for aerospace engines. CRMs’ current and future saving scenarios in the alloys and coatings for the aerospace engine are also discussed. The overarching aim of this paper is to raise awareness on the CRMs issue related to the alloys and coating for aerospace, suggesting some mitigation measures without having the ambition nor to give a complete overview of the topic nor a turnkey solution.

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Section: Coatings For Ni- and Ti-based Alloys For Aerospace Enginementioning

confidence: 99%

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

et al. 2021

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Protection from oxidation of second and third generation TiAl intermetallic alloys by magnetron sputtering deposition of a TiAl/TiAlN coating

et al. 2021

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Oxidation behavior of protective Ti-Al-Cr based coatings applied on the γ-TiAl alloys Ti-48-2-2 and TNM-B1

Laska

Braun

Knittel³

2018

Surface and Coatings Technology

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Oxidation behaviour of an intermetallic Ti–Al–Cr–Zr bond coat on a γ–TiAl based TNB alloy with 7YSZ thermal barrier coating

Cited by 3 publications

References 24 publications

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

Protection from oxidation of second and third generation TiAl intermetallic alloys by magnetron sputtering deposition of a TiAl/TiAlN coating

Oxidation behavior of protective Ti-Al-Cr based coatings applied on the γ-TiAl alloys Ti-48-2-2 and TNM-B1

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