Abstract
The wettability of graphite by the molten Al-Li alloy was measured using the sessile drop method, and the relationship between the thickness of reaction layer at the interface and the wettability was discussed. The contact angle of the molten aluminum on the graphite decreased with the increase in temperature, and the thickness of reaction layer increased with the rise in temperature. The wettability of graphite by the molten aluminum was considerably improved by the addition of lithium in aluminum. The addition of lithium suppressed the formation of reaction layer. The contact angle of the molten aluminum on the graphite in He-H2 atmosphere was larger than that under reduced pressure.
