Compatibility tests of hot‐pressed, high purity
normalAlN
of 90–99% of theoretical density were carried out in molten lithium, lithium‐saturated
normalLiCl‐normalKCl
, lithium saturated
normalLiF‐normalLiCl‐normalKCl
, molten 30 weight per cent (w/o)
Li2S‐S
and molten S at 400°C for up to 10,000 hr, and lithium‐saturated
normalLiCl
and chlorine‐saturated
normalLiCl
at 650°C for up to 1430 hr. At 400°C, the
normalAlN
was not attacked to any significant extent (<0.5 w/o), whereas at 650°C,
normalAlN
experienced intergranular attack by lithium and reacted at a rate of 1% per 100 hr in
Cl2‐normalLiCl
.