Experimental study reveals aluminum evaporation above 900°C and low deuterium retention in an Al–AlN–TiB2 composite, suggesting limited compatibility with fusion plasma environments.
This study investigates the behavior of an Al–AlN–TiB2 ceramic composite during heating and provides a preliminary assessment of its compatibility with hydrogen plasma. The study included an analysis of the atomic flux from the surface during heating, sample mass loss, and deuterium retention during plasma irradiation. It was found that free aluminum diffuses to the surface at approximately 600°C and evaporates from the material at temperatures above 900°C. Regular surface breakdowns and microparticle emission were observed during exposure to deuterium plasma. Deuterium retention in the material was relatively low and varied little with fluence at low irradiation temperatures.
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Solarevic et al. (2026) studied this question.
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