Effect of irradiation with pulsed fluxes of high-temperature deuterium plasma and fast ions on the structure of the surface layer of W-1% La2O3 alloy

Autor:	Yu. E. Ugaste, S. A. Maslyaev, V. N. Pimenov, Tõnu Laas, E. V. Demina, M. D. Prusakova, Vladimir A. Gribkov, V. Shirokova
Rok vydání:	2014
Předmět:	Materials science Dense plasma focus Divertor General Engineering Analytical chemistry chemistry.chemical_element Plasma Fusion power Tungsten chemistry Melting point General Materials Science Irradiation Surface layer Atomic physics
Zdroj:	Inorganic Materials: Applied Research. 5:211-218
ISSN:	2075-115X 2075-1133
DOI:	10.1134/s2075113314030058
Popis:	Scanning electron microscopy, X-ray electron probe analysis, and X-ray phase analysis are used to investigate the surface structure of W-1% La2O3 alloy after irradiation with submicrosecond pulses of deuterium ions and high-temperature deuterium plasma in a Plasma Focus installation for simulation of a plasma disruption in the ITER tokamak. It is established that melting of the tungsten surface and formation of micro-cracks take place under irradiation with a power flux density up to 1012 W/cm2. Introduction of La2O3 particles in the alloy leads to the formation of complex La-W-O oxides with lower melting points, which results in the formation of a nonuniform structure affecting the high-temperature response of the material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::535b8a6e3a82f307dd4d7b9838c0d897 https://doi.org/10.1134/s2075113314030058 Zobrazit plný text záznamu Full text from SpringerLink