| Abstract |
| Cordierite was synthesized using multi-component materials based on a tal0alumina-clay system. The cordierite sintered at 1360°C showed a high relative density of 98.8% and a low thermal expansion coefficient of 1.59×10-6/°C. To study the effect of adding alkaline-earth minerals on the cordierite properties, petalite, potash-feldspar, and dicalciu, phosphate were added to the synthesized cordierite. In the case of 9 wt% petalite or potash-feldspar addition, the cordierite was more densified; however, the thermal expansion coefficient and the pyroplasticity index were increased. In particular, a 5 μm thick self-glazed coating was formed with the addition of 9 wt% potash-feldspar. In the case of adding dicalcium phosphate, a glass phase was formed at low temperature and gas bubbles formed at high temperature above 1320 °C. The cordierite synthesized using multi-component materials is expected to be employed a as materials for high thermal shock, dense-microstructure flameware. |
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| Key Words |
| cordierite, flameware, thermal expansion, densification, thermal shock |
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