RT Conference Proceedings
T1 Influence of 1 and 5 wt% TiC additions on the oxidation behaviour of pure tungsten
A1 Pérez, Pablo
A1 Monge Alcázar, Miguel Ángel
A1 Muñoz Castellanos, Ángel
A1 Adeva, Paloma
AB The influence of 1 and 5 wt% of TiC nanoparticles on the oxidation behaviour of reinforced tungsten has been evaluated up to 700 °C in dry air. Isothermal thermogravimetric tests prove that the addition of 5 wt% of TiC particles is detrimental, increasing the mass gain of pure tungsten by a factor of ten. TiC particles act as stress concentrators, facilitating microcracking events within the scale and promoting decohesion between TiC-free boundaries and TiC-containing regions of the material. Compared to pure tungsten, lowering TiC addition to 1 wt% significantly improves the oxidation resistance at 700 °C by reducing about seven times the mass gain, while at 600 °C both materials exhibit similar resistance. At 700 °C, the presence of 1 wt% of TiC particles inhibits massive microcracking events occurring in the scale formed on pure tungsten, rendering the oxide scale denser and more protective.
PB Elsevier
SN 2352-1791
YR 2020
FD 2020-08
LK https://hdl.handle.net/10016/36668
UL https://hdl.handle.net/10016/36668
LA eng
NO Proceedings of: 19th International Conference on Fusion Reactor Materials (ICFRM-19), 27 October-01 November 2019, La Jolla, California, U.S.A
NO This research has been supported by the Regional Government of Madrid through TECHNOFUSIÓN(III)CM (S2018/EMT-4437) and the Ministerio de Economía y Competitividad of Spain (ENE2015-70300-C3-2-R MINECO/FEDER) and programs. The authors acknowledge the expert support of A. García and A. Tomás from the CENIM Microscopy Laboratory.
DS e-Archivo
RD 30 jun. 2024