TY - JOUR
T1 - Nanolaminated ternary carbide (MAX phase) materials for high temperatureapplications
AU - Lapauw, Thomas
AU - Kumar Swarnakar, Akhilesh
AU - Tunca, Bensu
AU - Lambrinou, Konstantza
AU - Vleugels, Jozef
N1 - Score=10
PY - 2018/4/5
Y1 - 2018/4/5
N2 - 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.
AB - 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.
KW - MAX phases
KW - Solid solutions
KW - X-ray diffraction
KW - Elastic properties
UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/34781271
U2 - 10.1016/j.ijrmhm.2017.11.038
DO - 10.1016/j.ijrmhm.2017.11.038
M3 - Article
SN - 0263-4368
VL - 72
SP - 51
EP - 55
JO - International Journal of Refractory Metals & Hard Materials
JF - International Journal of Refractory Metals & Hard Materials
ER -