Abstract
Low Z boron coatings have been tested for stability under simulated fusion reactor conditions including simultaneous temperature cycling and ion implantation from the 10B (n,α) 7 Li reaction. Boron coatings several microns thick, produced by vacuum evaporation onto heated titanium substrates, exhibited reasonable stability after doses of 3.8 × 10 18 α/ cm 2 and 1320 temperature cycles from 165–490°C. These conditions correspond to exposures at the first wall of the fusion reactor, ranging from a few weeks to about six months, depending on the reactor design.
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