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Santisteban, J.R.; Granada, J.R.; Mayer, R.E.
Proceedings CORENDE: Regional congress on nondestructive and structural evaluation1997
Proceedings CORENDE: Regional congress on nondestructive and structural evaluation1997
AbstractAbstract
[en] The commonly available techniques for the determination of hydrogen dissolved in solids are usually destructive from the point of view of the sample. A new, nondestructive method for this kind of measurements has been developed at our laboratory, with the requirement of improved sensitivity for massive samples. This scattering method is based on the use of epithermal neutrons, and has been implemented through the design and construction of a spectrometer dedicated to that task. In addition, the traditional transmission method has been employed to determine hydrogen content in metals, using the full sub thermal and thermal neutron energy ranges. A pulsed neutron source based on an electron LINAC is employed, together with time-of-flight techniques. In this work we will present some results illustrative of the sensitivity achieved by these neutron techniques in different systems and for a wide range of hydrogen concentrations. (author)
[es]
Las tecnicas usualmente disponibles para la determinacion del contenido de hidrogeno disuelto en solidos son destructivas desde el punto de vista de la muestra. Un metodo nuevo, no destructivo, ha sido desarrollado en nuestro laboratorio, con el requerimiento de conseguir una maxima sensibilidad en muestras masivas. Este metodo esta basado en la dispersion de neutrones epitermicos, y ha sido implementado a traves del diseno y la construccion de un espectrometro dedicado a esta tarea. Ademas, el metodo tradicional de transmision de neutrones ha sido empleado para determinar el contenido de hidrogeno en metales, utilizando neutrones en los rangos termico y subtermico de energias. Los experimentos se realizaron empleando una fuente pulsada de neutrones basada en un acelerador lineal de electrones (LINAC) en conjuncion con tecnicas de tiempo de vuelo. En este trabajo se presentan resultados ilustrativos que dan cuenta de la sensibilidad conseguida por ambos metodos en un amplio rango de concentraciones de hidrogeno y para diversos sistemas. (autor)Original Title
Determinacion del contenido de hidrogeno en materiales mediante tecnicas neutronicas
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Comision Nacional de Energia Atomica, Buenos Aires (Argentina); Universidad Tecnologica Nacional, Mendoza (Argentina). Facultad Regional; 424 p; 1997; p. 367-372; CORENDE: Regional congress on nondestructive and structural evaluation; CORENDE: Congreso regional de ensayos no destructivos y estructurales; Mendoza (Argentina); 27-30 Oct 1997; 12 refs., 10 figs.
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