Investigation of Carbon and Boron-Carbon Materials under High Transient Surface Heat Loads

Abstract

For the design of next generation fusion devices, a data base for materials which are considered as prime candidates for plasma facing applications is needed. With regard to the material behaviour under off-normal operation conditions of the plasma, especially data on the performance of these materials under short heat pulses with an energy deposition of several MJ/m2 are required. In an initial test series, both electron beam and laser beam facilities were used to perform disruption simulation tests on graphites, pyrolytic carbon, carbon fiber reinforced carbon (CFCs), and boron doped carbon materials. After theex=periments, morphological changes on the specimens were examined and the thermal erosion loss of the materials under the applied heat loads was measured and compared to numerical predictions.