MACROSTRUCTURE AND MICROSTRUCTURE OF THE CARBON-FIBER COMPOSITE UAM92-5D-B

A number of methods (TEM, SEM, optical microscopy, EPMA, XRDA) was app lied to uncover the architecture and the microstructure of a carbon fi bre composite developed in the Russian Federation for application in I TER. The results, especially on microstructure and defects in the diff erent components of this composite enabled the formulation of relation s between the microstructural features and the manufacturing procedure s which should be representative also for other multidirectional CFCs. Because of their importance for fusion application, special emphasis was devoted (a) to the influence of the different types of inner free surfaces in CFCs on their hydrogen absorption and retention and (b) to the effect of irradiation on microstructural features which govern th e mechanical properties, as, for example, toughness.