Sounds promising. I work in metal cladding, and there is significant interest in molten salt resistant coatings. It doesn't sound like this solution would work for molten salt nuclear reactors, which is a shame because they could be revolutionary if perfected.
IIRC the seaborg reactor design uses a "traditional" flouride based salt for the fuel salt. The NaOH is a separate circuit used as the moderator, instead of a graphite block like other thermal spectrum molten salt reactors. Being a liquid, this sidesteps the problem of radiation damage to the graphite with associated swelling, cracking etc. etc.