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Chemical states and deuterium retention behavior of vacuum plasma sprayed tungsten coatings
- Source :
- Journal of Nuclear Materials. 417:551-554
- Publication Year :
- 2011
- Publisher :
- Elsevier BV, 2011.
-
Abstract
- Tungsten (W) coatings were prepared using vacuum plasma spraying (VPS) technology and then the chemical states and retention behaviors of deuterium in VPS-W coatings were analyzed by X-ray photoelectron spectroscopy (XPS) and thermal desorption spectroscopy (TDS). The results showed that chemical reacted oxygen (W–O bonds) and chemisorbed oxygen (O–O bonds) existed both on the surface and interior of tungsten coatings. Oxygen was chemically sputtered during D 2 + implantation. Two deuterium desorption stages at the temperature ranges around 300–700 K and 800–1150 K were observed for tungsten coatings. The retention behavior of deuterium in tungsten coatings was greatly different from that of bulk tungsten, which was related to the existence of oxygen.
- Subjects :
- Nuclear and High Energy Physics
Materials science
Thermal desorption spectroscopy
Analytical chemistry
Refractory metals
chemistry.chemical_element
Tungsten
Electron spectroscopy
Oxygen
Chemical state
Nuclear Energy and Engineering
chemistry
X-ray photoelectron spectroscopy
Desorption
General Materials Science
Subjects
Details
- ISSN :
- 00223115
- Volume :
- 417
- Database :
- OpenAIRE
- Journal :
- Journal of Nuclear Materials
- Accession number :
- edsair.doi...........8726639f6bc9e680fd6c473c1e6a050f