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

Ostrovskaya, Oxana; Badini, Claudio Francesco; Deambrosis, Silvia Maria; Miorin, Enrico; Biamino, Sara; Padovano, Elisa

doi:10.1016/j.matdes.2021.109905

Cited by 22 publications

(5 citation statements)

References 48 publications

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“…And the oxide film is exfoliated, due to the difference in the generated volume and thermal expansion coefficient between the generated oxide product and the substrate. The growth stress and thermal stress in the oxidation process could not be fully released through the small deformation of the oxide film, resulting in the cracking and exfoliation of the oxide film surface [6]. At this time, the protective effect of the oxide film is seriously reduced.…”

Section: Influence Of Time and Temperature On Surface Morphology Of O...mentioning

confidence: 99%

“…But its oxidation resistance decreases rapidly above 900 °C, which will not meet the performance requirements of practical applications and seriously restricts its wide application [5]. The competitive oxidation of Ti and Al in the TiAl alloy makes it difficult to form protective Al 2 O 3 , so the alloy matrix will be oxidised [6,7]. At present, there are many researches about this alloy's oxidation performance and mechanism [3,8,9].…”

Section: Introductionmentioning

confidence: 99%

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Oxidation properties of Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy at 950–1050 °C

Lin

Huang

Yuan

et al. 2023

Materials Science and Technology

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Oxidation experiments of a Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy were carried out at 950, 1000 and 1050 °C. The alloy's oxidation kinetics curve, oxidation products, oxide film structure and oxidation mechanism at different oxidation temperatures and times were studied systematically. The oxide film has an obvious multilayer structure. Oxygen diffuses into the matrix alloy, and two oxides (TiO2 and Al2O3) grow alternately in layers to produce multilayer structures. As the oxidation process continues, oxygen atoms continue to diffuse in the matrix, there are holes and cracks in the oxide film, and the oxidation resistance of the oxide film is weakened.

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Section: Influence Of Time and Temperature On Surface Morphology Of O...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oxidation properties of Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy at 950–1050 °C

Lin

Huang

Yuan

et al. 2023

Materials Science and Technology

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“…Physical vapor deposition (PVD) is the most versatile technology for depositing oxidation-resistant Al-rich coatings onto TNM alloys. A wide range of different oxidationresistant PVD coatings has been obtained [13,26,27]. However, the thickness of these coatings does not exceed 10 µm, which significantly limits their use for long-term hightemperature applications.…”

Section: Introductionmentioning

confidence: 99%

TiAl-Based Oxidation-Resistant Hard Coatings with Different Al Contents Obtained by Vacuum-Pulse-Arc Granule Melting

Sheveyko,

Kuptsov,

Kiryukhantsev-Korneev

et al. 2023

Coatings

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A method was proposed for increasing the oxidation resistance of promising wrought Ti2AlNb ortho-alloys by depositing γ-TiAl-based coatings. Using original vacuum pulse-arc melting of 100 μm thick granule layers, coatings with different Al/Ti ratios and a thickness of 50–60 µm were obtained on the surface of the Ti50Al25Nb25 alloy. Granules Ti50Al44Nb4.9Mo1B0.1 (at.%), 20–60 μm in size, were employed. To vary Al content, initial granules and their mixture with Al powder were used. Excellent adhesion of the coatings is ensured by the similar chemical composition and structure of the substrate and coatings, as well as micro-metallurgical reactions between granules and the substrate that occur during treatment. The resulting coatings had a submicron gradient structure consisting of TiAl and Ti3Al intermetallic compounds. During oxidation at 850 °C for 10 h, an oxide layer consisting of a mixture of α-Al2O3, TiO2, and AlNbO4 was formed on the coating surfaces. With an increase in the annealing duration to 100 h, a dense α-Al2O3 oxide layer, approximately 0.5 µm thick, was formed over the primary oxide mixture, the quality of which was higher in coatings enriched with aluminum.

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“…Increasing the nitrogen potential and adding methane preferably leads to the formation of a layer of (3N-Fe 2 ) type nitride compounds. It is very important to remember that the chemical composition of the substrate plays an important role in the metallurgy of the nitrided surface 47,49,[55][56][57][58][59][60] .…”

Section: Introductionmentioning

confidence: 99%

Deposition of Ti-Based Thin Films on AISI 1020 Steel Substrates Using the Cathodic Cage Plasma Deposition Technique

Silva,

Cardoso,

Gontijo

et al. 2023

Mat. Res.

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The automotive industry is one of the largest industrial segments in the world market. The exhaust system of motor vehicles is responsible for the emission and treatment of toxic gasses released by the engine. In this sense, the application of titanium on an AISI 1020 steel substrate was carried out by plasma deposition using a cathode cage. The aim of this research was to evaluate the application of this material in the exhaust system of motor vehicles. The samples were characterized by scanning electron microscopy (SEM), confocal microscopy (CM), microhardness tests and corrosion resistance tests. The samples exhibited a thin film with higher titanium content and hardness than the uncoated sample. The corrosion potential also increased and the current density was lower than the uncoated sample. The conclusion is that the deposition of thin titanium films on AISI 1020 steel with CCPD has the potential to produce thin films.

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

Cited by 22 publications

References 48 publications

Oxidation properties of Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy at 950–1050 °C

Oxidation properties of Ti-47.5Al-2.5V-1.0Cr-0.2Zr alloy at 950–1050 °C

TiAl-Based Oxidation-Resistant Hard Coatings with Different Al Contents Obtained by Vacuum-Pulse-Arc Granule Melting

Deposition of Ti-Based Thin Films on AISI 1020 Steel Substrates Using the Cathodic Cage Plasma Deposition Technique

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