Y. Li, X. D. Cheng, R. F. Zhang, H. P. Zhang and Y. H. Wang (2015) Effect of Excess MgO on the Properties of Cordierite Ceramic Sintered by Solid-State Method. Journal/International Journal Of Applied Ceramic Technology 12 443-450. [In English]
Web link: http://dx.doi.org/10.1111/ijac.12174
Keywords: CRYSTALLIZATION BEHAVIOR, SYSTEM MGO-AL2O3-SIO2, GLASS-CERAMICS, SAPPHIRINE, KAOLIN, ROUTE, RATIO, TALC
Abstract: The effect of excess MgO mole ratio on the sintering behavior of cordierite ceramic was studied using XRD and SEM. The green bodies were sintered at 1100-1300 degrees C by solid-state method. The excess MgO did not obviously reduce the crystallization temperature but increased the production of liquid and densification. This effect has to be activated by a specific temperature. The starting material had little influence on the crystallization phase at 1200 degrees C or higher. As basic magnesium carbonate can also be used as a pore-forming agent, the shrinkage and porosity approached maximum value at 3.4 mole ratio of MgO.

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