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Título

Stardust's Hydrazine (N2H4) Fuel: A Potential Contaminant for the Formation of Titanium Nitride (Osbornite)

Autor Martínez-Frías, J.; Nna Mvondo, Delphine ; Rodríguez-Losada, José A.
Palabras clave Hydrazine (N2H4) monopropellant
Stardust space mission
Comet dust
Osbornite
Titanium nitride
Sample contamination
Nitridation processes
Fecha de publicación 14-mar-2007
EditorAmerican Chemical Society
Citación Energy & Fuels 21(3): 1822-1823 (2007)
ResumenHundreds of space probes, satellites, and shuttles use ultrapure hydrazine monopropellant for guidance once in orbit. Stardust is the first U.S. mission devoted to exploring a comet and is the first U.S. mission designed to capture samples robotically from a comet and return them to Earth. The spacecraft is equipped with two sets of thrusters that use ultrapure hydrazine as a monopropellant.2,3 One of the biggest scientific surprises of this mission was the detection of tiny (sub-100-nm-size) grains of vanadium-bearing titanium nitride (osbornite).4,5 The use of hydrazine is one of the best significant methods of nitridation, which, precisely, has been used for the specific formation of titanium nitride. Stardust's hydrazine could have acted as a potential contaminant, coreacting with Ti compounds (either from the comet or the spacecraft), for the formation of the titanium nitride (osbornite) particles.
Descripción 2 pages.
Versión del editorhttp://dx.doi.org/10.1021/ef070014r
URI http://hdl.handle.net/10261/8218
DOI10.1021/ef070014r
ISSN0887-0624
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