Nb2AlC-particle induced accelerated crack healing in ZrO2–matrix composites

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Stumpf M, Fey T, Kakimoto K, Greil P
Zeitschrift: Ceramics International
Jahr der Veröffentlichung: 2018
Band: 44
Heftnummer: 16
Seitenbereich: 19352-19361
ISSN: 0272-8842


Abstract

The oxidation induced crack healing behavior of pre-cracked Nb2AlC particle loaded ZrO2-matrix composites was explored by annealing in air at 1200 °C for short periods of 10 and 20 min. Composites loaded with 0, 6.5, 13, and 19.5 vol. % Nb2AlC powder dispersed in 3Y-TZP matrix powder were manufactured by spark plasma sintering (SPS) at 1300 °C. Semi-elliptical artificial surface cracks with a length exceeding 220 µm were produced by Vickers indentation. The modulus of rupture of virgin, indented and annealed samples was measured in three-point bending mode. Compared to single phase 3Y-TZP strength recovery of the Nb2AlC loaded composite upon annealing at 1200 °C in air is accelerated and reaches > 60% of the initial strength after a short healing period of 10 min only. A semi-empirical oxidation cohesive zone healing model was derived which describes the crack microstructure evolution as a combined effect of 3Y-TZP-matrix healing superimposed by Nb2AlC particle oxidation induced healing.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

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


Zitierweisen

APA:
Stumpf, M., Fey, T., Kakimoto, K., & Greil, P. (2018). Nb2AlC-particle induced accelerated crack healing in ZrO2–matrix composites. Ceramics International, 44(16), 19352-19361. https://dx.doi.org/10.1016/j.ceramint.2018.07.164

MLA:
Stumpf, Martin, et al. "Nb2AlC-particle induced accelerated crack healing in ZrO2–matrix composites." Ceramics International 44.16 (2018): 19352-19361.

BibTeX: 

Zuletzt aktualisiert 2019-04-01 um 19:10

Link teilen