METHOD OF MANUFACTURING COMPOSITE CRUCIBLE AND METHOD OF MANUFACTURING SILICON CRYSTAL
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United States of America Patent
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Aug 4, 2015
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Sep 9, 2009
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A composite crucible 10 is characterized in the use of mullite (3Al2O3.2SiO2) as the basic material of the crucible. The composite crucible 10 has a crucible body 11 made of mullite material whose main component is alumina and silica, and a transparent vitreous silica layer 12 formed on the inner surface of the crucible body 11. The thickness of the transparent vitreous silica layer 12 is smaller than that of the crucible body 11. The crucible body 11 is formed by the slip casting method, and the transparent vitreous silica layer 12 is formed by the thermal spraying method.
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