Abstract
Tribo- and photo-stimuated exoelectron emission from reactor graphite has been investigated, because an increase in tribo-stimulated exoelectron emission from graphite signifies large friction. Selective deformation of graphite fibrils was identified with transmission electron microscopy. The exothermic process during the preferred orientation caused emission of tribo-stimulated electrons. Photo-stimulated exoelectron emission from reactor graphite was also detected. However, the mechanisms of photo-stimulated exoelectron emission were different from that of tribo-stimulated exoelectron emission, and photo-stimulated exoelectron emission does not relate to a change in tribological characteristics.
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