Digitalfire will shut down on June 26. I no longer have the authority to grant exemption to a section in the Terms and Conditions of using material in the Insight-Live account from which I built the source material. While there are ways to comply with the take-down order, they are beyond my means because of how complex and large the site has become in the past 35+ years. It has been a wild ride for a shy prairie boy, thanks to everyone for your support. Insight-live.com is not affected by this.
It is made from 96.5% calcined alumina (plus 3.5% Veegum to provide plasticity for forming). At cone 6, with no prior firing to a higher temperature, a 5mm thick slice can support a piece like this. Of course, prefiring to a higher temperature for extra hot strength is a better idea. A caution: This is just typical sintered alumina, it does not have nearly the thermal shock resistance that fully crystallized tabular alumina has.
| Materials |
Calcined Alumina
A high-purity Al2O3 used in technical ceramics, refractories, glazes, and bodies for its extreme hardness, high-temperature strength, and chemical stability. |
| Glossary |
Refractory
In the ceramic industry, refractory materials are those that can withstand a high temperature without deforming or melting. Or can be sintered into super materials. |
![]() PayPal | No tracking, No ads, No paywall, No transient content! Just organized, concise information constantly updated and improved. Was this helpful? Consider supporting me. |
Buy me a coffee and we can talk