abstract |
A crucible for melting titanium alloys has a facecoat (16) including at least one facecoat layer (18) containing an oxide selected from scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series oxide, and combinations thereof, and a backing (22) including at least one backing layer where the crucible has a backing (22) to facecoat (16) thickness ratio of from 6.5:1 to 20:1. |