Crucible material and crucible
A crucible material whose chemical composition consists essentially of, in weight %, about 93.5% to about 97.5% ZrO 2 , about 0.2% to about 1.0% MgO, about 1.0% to about 3.0% SiO 2 , and about 1.5% to about 2.5% Y 2 O 3 wherein the SiO 2 can be present as silica and a silicate of zirconium, magnesiu...
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| Sprache: | eng |
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| Zusammenfassung: | A crucible material whose chemical composition consists essentially of, in weight %, about 93.5% to about 97.5% ZrO
2
, about 0.2% to about 1.0% MgO, about 1.0% to about 3.0% SiO
2
, and about 1.5% to about 2.5% Y
2
O
3
wherein the SiO
2
can be present as silica and a silicate of zirconium, magnesium, and/or yttrium. When formed to a crucible shape and sintered (fired) at elevated temperature, the ceramic material provides a crucible with improved resistance to thermal shock when heated to over 1100 degrees C. |
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