Community Research and Development Information Service - CORDIS

Abstract

The use of Carbon Fibre Composites (CFCs) for fusion applications requires differentiating the contribution to the hydrogen transport constants of the CFC fibres and matrix. The apparent transport constants for three CFCs (N112, NS1 and N11 from SEP) were derived using a newly developed non-stationary model for Isovolumetric Desorption Experiments (IDE). The model was validated with a well-characterized homogenous material (Ni). However, the experimental release curve shows two overlapping time constants. The analysis of the hydrogen paths in the CFCs served to build a non-homogenous material (Ni). However, the experimental release curve shows two overlapping time constants. The analysis of the hydrogen paths in the CFCs served to build a non-homogenous diffusive model that seperates both contributions. Values for the hydrogen diffusivity in the matrix are 6-7 orders of magnitude higher than in the fibres.

Additional information

Authors: SEDANO L A, Environment Institute, Ispra (IT);PERUJO A, Environment Institute, Ispra (IT);WU C H, Max-Planck-Institut, Garching bei Munchen (DE)
Bibliographic Reference: Article: Journal of Nuclear Material (1998)
Record Number: 199910696 / Last updated on: 1999-05-08
Category: PUBLICATION
Original language: en
Available languages: en