Journal Article

FZJ-2015-00690

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Enhanced oxidation resistance of ZrB$_{2}$/SiC Composite through in situ reaction of gadolinium oxide in patterned surface cavities

Gonzalez, J. (Corresponding Author)FZJ* ; Cedillos-Barraza, O. ; Döring, S.FZJ* ; Nolte, S. ; Guillon, O.FZJ* ; Lee, W. E.

2014
Elsevier Science Amsterdam [u.a.]

This record in other databases:  

Please use a persistent id in citations: doi:10.1016/j.jeurceramsoc.2014.07.015

Abstract: Micro-cavities on the surface of dense ZrB2/20 vol.% SiC composites, machined by ultra-fast laser ablation, were filled with Gd2O3 nanopowder and oxidized in static air at 1600 °C. Optimized rectangular pattern of cavities, 10 μm diameter and deep, 20 μm apart conferred improved oxidation resistance compared to the untreated ZrB2/20 vol.% SiC due to the formation of glasses of higher viscosity with lower oxygen diffusivities. Reduction of the oxidized depth was revealed by a significant decrease of 10 μm (60%) in the extent of the protective layer. The filled-cavity strategy leads to better protection against oxygen diffusivity into the composite without altering the bulk properties.

---

Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 899 - ohne Topic (POF2-899) (POF2-899)

Appears in the scientific report 2014

---

Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---