by Gordillo, N., Gómez de Castro, C., Tejado, E., Pastor, J. Y., Balabanian, G., Panizo-Laiz, M., Gonzalez-Arrabal, R., Perlado, J. M. and del Rio, J.
Abstract:
Tungsten is a candidate to be used as plasma facing materials in future fusion nuclear reactors. There, the material has to withstand large radiation fluxes and thermal loads. Nowadays, nanostructured tungsten (NW) seems to exhibit a better radiation-resistance than the coarse grained. However, the thermal stability of NW is still an open question. On these bases, the thermal stability of NW coatings is studied in the temperature range from 1000 to 1473K. For this purpose, Samples were isothermally annealed in vacuum at temperatures from 298 to 1473K. The morphological and microstructural properties of the samples were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-Ray diffraction (XRD), respectively. For Ttextless1000K nanostructured are preserved and only a small reduction in the internal stress of the films is observed. For Ttextgreater100K, nanostructures start to grow in a bimodal fashion with activation energy of 0.259eV, reaching a submicron-sized threshold at T≈1473K.
Reference:
On the thermal stability of the nanostructured tungsten coatings (Gordillo, N., Gómez de Castro, C., Tejado, E., Pastor, J. Y., Balabanian, G., Panizo-Laiz, M., Gonzalez-Arrabal, R., Perlado, J. M. and del Rio, J.), In Surface and Coatings Technology, volume 325, 2017.
Bibtex Entry:
@article{gordillo_thermal_2017,
title = {On the thermal stability of the nanostructured tungsten coatings},
volume = {325},
issn = {0257-8972},
url = {https://www.sciencedirect.com/science/article/pii/S0257897217306849},
doi = {10.1016/j.surfcoat.2017.06.070},
abstract = {Tungsten is a candidate to be used as plasma facing materials in future fusion nuclear reactors. There, the material has to withstand large radiation fluxes and thermal loads. Nowadays, nanostructured tungsten (NW) seems to exhibit a better radiation-resistance than the coarse grained. However, the thermal stability of NW is still an open question. On these bases, the thermal stability of NW coatings is studied in the temperature range from 1000 to 1473K. For this purpose, Samples were isothermally annealed in vacuum at temperatures from 298 to 1473K. The morphological and microstructural properties of the samples were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-Ray diffraction (XRD), respectively. For T{textless}1000K nanostructured are preserved and only a small reduction in the internal stress of the films is observed. For T{textgreater}100K, nanostructures start to grow in a bimodal fashion with activation energy of 0.259eV, reaching a submicron-sized threshold at T≈1473K.},
language = {en},
urldate = {2021-07-09},
journal = {Surface and Coatings Technology},
author = {Gordillo, N. and Gómez de Castro, C. and Tejado, E. and Pastor, J. Y. and Balabanian, G. and Panizo-Laiz, M. and Gonzalez-Arrabal, R. and Perlado, J. M. and del Rio, J.},
month = sep,
year = {2017},
note = {No CMAM},
keywords = {HiPIMS, Nanostructured tungsten, Thermal stability, Thermo-diffraction},
pages = {588--593},
file = {Gordillo et al. - 2017 - On the thermal stability of the nanostructured tun.pdf:E:\Usuarios\Administrator\Zotero\storage\LA2SV8L6\Gordillo et al. - 2017 - On the thermal stability of the nanostructured tun.pdf:application/pdf},
}