Core material for precision casting and finished casting of metals and metal alloys contains open pore aerogels and inorganic fillers obtained by sol-gel polymerization of inorganic silica gel

摘要

Core material contains open pore aerogels and at least 50 vol.% inorganic fillers obtained by sol-gel polymerization of inorganic silica gel. An Independent claim is also included for a process for the production of cores for precision casting and finished casting.