Abstract
At present, the formation conditions of cordierite were relatively harsh, the formation temperature was close to the decomposition temperature, and it was difficult to control the sintering temperature. In order to solve the problem of cordierite synthesis, cordierite powders were synthesized by chemical coprecipitation–rotation evaporation and solid reaction sintering. The thermodynamics, thermal analysis, phase composition, specific surface area, morphology, and grain size distribution of the samples sintered at different temperatures were systematically studied. SEM micrographs showed that the crystal structural evolution of cordierite was divided into three processes; the temperatures of 1000 °C (the formation of hexagonal flake–like grain) and 1200 °C (the formation of flaky texture grain) were two important sintering transition points. The specific surface area of the sample sintered at 1400 °C was 1.76 m2/g, and the grain size was well developed with the range of 196.5–222.7 nm. Phase analysis revealed that the main crystal phase of samples sintered at 1200 °C was cordierite phase and a little spinel phase and mullite phase, and the peak intensity of the characteristic peaks at 1400 °C was more intense.
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The work is supported by National Natural Science Foundation of China (51772139).
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Hou, Q., Luo, X., Liu, X. et al. Preparation of cordierite powder by chemical coprecipitation–rotation evaporation and solid reaction sintering. J Aust Ceram Soc 56, 1575–1582 (2020). https://doi.org/10.1007/s41779-020-00496-8
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DOI: https://doi.org/10.1007/s41779-020-00496-8