Nb2AlC-Particle-Reinforced ZrO2-Matrix Composites

Journal article
(Original article)


Publication Details

Author(s): Stumpf M, Biggemann J, Fey T, Kakimoto KI, Greil P
Journal: Journal of Ceramic Science and Technology
Publication year: 2018
Volume: 9
Journal issue: 3
Pages range: 271-278
ISSN: 2190-9385


Abstract

Nb2AlC-particle-loaded ZrO2-matrix composites were manufactured by means of pressureless sintering (PS) and spark plasma sintering (SPS) at 1300 °C. The MAX phase Nb2AlC was synthesized based on the reaction of Nb, NbC and Al powder mixtures at 1600 °C in Ar-atmosphere. Nb2AlC formation was confirmed with XRD and ICP-OES. Nano-particulate tetragonal 3Y-TZP powder was mixed with Nb2AlC powder with a mean particle size of 7.93 µm up to a volume fraction of 19.5 %. While the microstructure of the PS composites revealed a residual porosity of 20 – 22 %, almost dense materials with a residual porosity ≤ 2.35 % were obtained by means of SPS. With increasing Nb2AlC fraction a significant improvement of the mechanical properties was observed. An increase in fracture toughness of up to 46 % (PS) and 67 % (SPS) measured on composites loaded with 19.5 vol% Nb2AlC compared to pure 3Y-TZP was attributed to crack bridging of Nb2AlC particles which, depending on the orientation, may attain high strain values owing to basal slip and kink band formation.


FAU Authors / FAU Editors

Biggemann, Jonas
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)
Fey, Tobias Dr.
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)
Greil, Peter Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)
Stumpf, Martin
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)


External institutions with authors

Nagoya Institute of Technology / 名古屋工業大学 Nagoya Kōgyō Daigaku


How to cite

APA:
Stumpf, M., Biggemann, J., Fey, T., Kakimoto, K.-I., & Greil, P. (2018). Nb2AlC-Particle-Reinforced ZrO2-Matrix Composites. Journal of Ceramic Science and Technology, 9(3), 271-278. https://dx.doi.org/10.4416/JCST2018-00013

MLA:
Stumpf, Martin, et al. "Nb2AlC-Particle-Reinforced ZrO2-Matrix Composites." Journal of Ceramic Science and Technology 9.3 (2018): 271-278.

BibTeX: 

Last updated on 2019-05-06 at 12:34