Compositions and properties of Alumina (Al2O3) ceramic used for experimentation.
|Material type||Recrystalised Alumina|
|Percentages of compositions|
|Iron oxide (Fe2O3)||0.07|
|Sodium oxide, Calcia||Rest|
|Volume density gm/cc||3.85|
|Apparent porosity %||Nil – 0.1|
|Expansion coefficient 20–1000 °C||8.4 × 10−6/°C|
|Melting point||2000 °C|
|Limit of use||1900 °C|
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