16. 07. 2006
I. López-Galilea, Q.G. Guo, C. García-Rosalesa and P. Wolber
Fine-grained isotropic graphites are attractive materials for many high performance applications requiring high thermal stability. However, for some applications under extreme conditions, such as the first wall of nuclear fusion devices receiving highest thermal and particle loads (Loarte, 2004, Federici et al., 2001), or thrusters chambers in reusable air breathing propulsion systems (Kumar et al., 2001, Bouchez et al., 2003), or internal components of high or very high temperature gas cooled fission reactors (Gauthier et al., 2004), conventional poligranular isotropic graphites do not provide the required performance, mainly due to insufficient thermal shock resistance and/or low erosion resistance at oxidizing atmosphere or under hydrogen bombardment. In addition, some of the mentioned applications require the manufacturing of great amounts of large pieces.