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Zirconium oxide (ZrO2)
Zirconium oxide is an extremely resistant material. It can withstand temperatures well above the melting point of aluminum and does not corrode. It also has a low thermal conductivity.
It is electrically conductive at temperatures above 600 ° C and is often used in oxygen sensor cells in high temperature induction furnaces.
Its characteristics are:
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highest edge strength
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temperature resistant up to 2400 ° C
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high density
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high flexural strength (tough)
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poor thermal conductivity (20% of aluminum)
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chemically inert
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highest surface quality
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high mass (density 6.0 g / cm3)
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high thermal expansion (similar to steel)
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extremely heat insulating
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electrically insulating
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Color: yellow, white or ivory