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Microstructural inf...
Microstructural influence of the thermal behavior of arc deposited TiAlN coatings with high aluminum content
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- Broering Chaar, Ana Beatriz (author)
- Linköpings universitet,Nanostrukturerade material,Tekniska fakulteten,Saarland Univ, Germany
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- Rogström, Lina (author)
- Linköpings universitet,Nanostrukturerade material,Tekniska fakulteten
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- Johansson, Mats (author)
- Linköpings universitet,Nanostrukturerade material,Tekniska fakulteten,Seco Tools AB, Sweden
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- Barrirero, Jenifer (author)
- Linköpings universitet,Nanostrukturerade material,Tekniska fakulteten,Saarland Univ, Germany
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- Aboulfadl, Hisham, 1986 (author)
- Universität des Saarlandes,Chalmers tekniska högskola,Chalmers University of Technology,Saarland Univ, Germany; Chalmers Univ Technol, Sweden
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- Schell, N. (author)
- Helmholtz Zentrum,Helmholtz Center,Helmholtz Zentrum Geesthacht, Germany
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- Ostach, D. (author)
- Helmholtz Zentrum,Helmholtz Center,Helmholtz Zentrum Geesthacht, Germany
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- Mücklich, Frank (author)
- Universität des Saarlandes,Saarland Univ, Germany
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- Odén, Magnus (author)
- Linköpings universitet,Nanostrukturerade material,Tekniska fakulteten
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388 .- 1873-4669. ; 854
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Abstract
Subject headings
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- The influence of the microstructure on the thermal behavior of cathodic arc deposited TiAlN coatings was studied as a function of isothermal annealing. Two compositionally similar but structurally different coatings were compared, a Ti0·34Al0·66N0.96 coating with a fine-grain structure consisting of a mixture of cubic (c) and hexagonal (h) phases, and a Ti0·40Al0·60N0.94 coating with a coarse-grain structure of cubic phase. By in situ wide-angle synchrotron x-ray scattering, spinodal decomposition was confirmed in both coatings. The increased amount of internal interfaces lowered the decomposition temperature by 50 °C for the dual-phase coating. During the subsequent isothermal anneal at 1000 °C, a transformation from c-AlN to h-AlN took place in both coatings. After 50 min of isothermal annealing, atom probe tomography detected small amounts of Al (∼2 at.%) in the c-TiN rich domains and small amounts of Ti (∼1 at.%) in the h-AlN rich domains of the coarse-grained single-phase Ti0·40Al0·60N0.94 coating. Similarly, at the same conditions, the fine-grained dual-phase Ti0·34Al0·66N0.96 coating exhibits a higher Al content (∼5 at.%) in the c-TiN rich domains and higher Ti content (∼15 at.%) in the h-AlN rich domains. The study shows that the thermal stability of TiAlN is affected by the microstructure and that it can be used to tune the reaction pathway of decomposition favorably.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Vapor deposition
- Synchrotron radiation
- Microstructure
- Coating materials
Publication and Content Type
- art (subject category)
- ref (subject category)
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