To improve corrosion resistance of a forced cooling type induction- heating crucible made from copper, used for reprocessing of a spent nuclear fuel.
The method for preventing corrosion of a forced cooling type induction-heating crucible made from copper, used for dissolving a halogen compound, is characterized by arranging an anticorrosion layer of a metal with thermal conductivity of 5 W/m.K or higher, on the surface of the above crucible. The metal is preferably a Ni-based high alloy. The anticorrosion layer preferably comprises three layers consisting of a layer closest to the surface of the crucible having void fraction of 7.5%, a layer having void fraction of 8.5% or higher thereon, and a layer having void fraction of 5.5% or lower further thereon.
SUENAGA HIROYOSHI
URABE NAMIO
