| 摘要 |
Methods for making refractory crucibles for melting titanium alloys including providing a form, applying a facecoat to the form, and applying a backing to the facecoat where the facecoat has at least one facecoat layer including an oxide selected from the group consisting of scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series oxide, and combinations thereof and where the backing to the facecoat has a thickness ratio of from about 6.5:1 to about 20:1.
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