Abstract
A cordierite was synthesized from calcined bauxite, talcum, and quartz. The properties and microstructure of the cordierite sintered samples were characterized by Archimedes’ method, thermal dilatometry, X-ray diffraction (XRD), scanning electron microscopy (SEM), and so on. The experimental results showed that calcined bauxite could broaden the range of synthesizing temperature from 1300 °C to 1420 °C and get pure cordierite. The bulk density and linear thermal expansion coeffi cient of the sample synthesized at 1420 °C for 2 h were 1.97 g·cm−3 and 2.1×10−6 °C−1, respectively. The XRD analysis showed that the major crystalline phase was α-cordierite with almost no glassy matters, the SEM images illustrated a small vent hole and the size were 5–100 μm, the well-grown hexagonal and granular cordierite grains had the sizes distributed among 0.1–8 μm, and providing high mechanical strength and lower linear thermal expansion coeffi cient.
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Funded by the National Basic Research Program (“973” Program) (2010CB227105)
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Wu, J., Fang, B., Xu, X. et al. Synthesis of refractory cordierite from calcined bauxite, talcum and quartz. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 28, 329–333 (2013). https://doi.org/10.1007/s11595-013-0688-3
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DOI: https://doi.org/10.1007/s11595-013-0688-3