Nanolaminated ternary carbide (MAX phase) materials for high temperature applications

T. Lapauw, A. K. Swarnakar, B. Tunca, K. Lambrinou, J. Vleugels

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

There is a clear need for high-strength (≥ 300 MPa), thermally stable, conductive materials that are also thermal shock resistant. Some MAX phases – ternary nano-laminated carbides and nitrides – are reported to fulfil all these requirements and can be considered as potential structural materials for high-temperature applications. In this work, a set of quaternary (M,M′)AX phase materials based on the Nb-Al-C system were synthesized by reactive hot pressing, starting from M-hydride powders. The possibility to substitute Nb with at least 10 at% of other M elements (M′ = Ti, Zr, Hf and Ta) in the crystal lattice was investigated. The crystal structure of the produced solid solutions was studied by X-ray diffraction and the lattice parameters were calculated by Rietveld refinement. The material behaviour in an inert atmosphere was tested by measuring the elastic properties – Young's Modulus and internal friction – as a function of temperature up to 1500 °C, and the effect of the substitution on the room temperature flexural strength was assessed.

LanguageEnglish
Pages51-55
Number of pages5
JournalInternational Journal of Refractory Metals and Hard Materials
Volume72
Early online date2 Dec 2017
DOIs
Publication statusPublished - Apr 2018
Externally publishedYes

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High temperature applications
Carbides
Conductive materials
Rietveld refinement
Internal friction
Thermal shock
Hot pressing
Hydrides
Crystal lattices
Nitrides
Bending strength
Powders
Lattice constants
Solid solutions
Substitution reactions
Crystal structure
Elastic moduli
X ray diffraction
Temperature

Cite this

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Nanolaminated ternary carbide (MAX phase) materials for high temperature applications. / Lapauw, T.; Swarnakar, A. K.; Tunca, B.; Lambrinou, K.; Vleugels, J.

In: International Journal of Refractory Metals and Hard Materials, Vol. 72, 04.2018, p. 51-55.

Research output: Contribution to journalArticle

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