Nickel alloys belong to the group of most resistant materials when used under the extreme operating conditions, including chemically
aggressive environment, high temperature, and high loads applied over a long period of time. Although in the global technology market
one can find several standard cast nickel alloys, the vast majority of components operating in machines and equipment are made from
alloys processed by the costly metalworking operations. Analysis of the available literature and own studies have shown that the use of
casting technology in the manufacture of components from nickel alloys poses a lot of difficulty. This is due to the adverse technological
properties of these alloys, like poor fluidity, high casting shrinkage, and above all, high reactivity of liquid metal with the atmospheric air
over the bath and with the ceramic material of both the crucible and foundry mold. The scale of these problems increases with the expected
growth of performance properties which these alloys should offer to the user.
This article presents the results of studies of physico-chemical interactions that occur between theH282alloy melt and selected refractory
ceramic materials commonly used in foundry. Own methodology for conducting micro-melts on a laboratory scale was elaborated and
discussed. The results obtained have revealed that the alumina-based ceramics exhibits greater reactivity in contact with the H282 alloy
melt than the materials based on zirconium compounds. In the conducted experiments, the ceramic materials based on zirconium silicate
have proved to be a much better choice than the zirconia-silica mixture. Regardless of the type of the ceramic materials used, the time and
temperature of their contact with the nickel alloy melt should always be limited to an absolutely necessary minimum required by the
technological regime.