Effects of SiO2 and Fe2O3 on Morphological of Mullite

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Effects of SiO2 and Fe2O3 on morphological of mullite were investigated for a special use related to mullite containing SiO2 and Fe2O3. It was concluded that, when Al2O3/SiO2 ratio near the theoretical component of mullite, the composites cannot been sintered at 1600°C. The normal morphology of mullite presents granule form with Fe2O3 addition, while takes a long column shape with the condition of excessive. SiO2 presenting. Fe2O3 can promote sintering of mullite, as well as growing in needle-like morphology.

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Edited by:

Wei Pan and Jianghong Gong

Pages:

64-65

DOI:

10.4028/www.scientific.net/KEM.434-435.64

Citation:

C. S. Huang et al., "Effects of SiO2 and Fe2O3 on Morphological of Mullite", Key Engineering Materials, Vols. 434-435, pp. 64-65, 2010

Online since:

March 2010

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$35.00

[1] T.I. Ma, K.S. Mazdiyasni: J. Am. Ceram. Soc. Vol. 66 (1983), p.699.

[2] S. Kanzaki, H. Tabata, T. Kumazawa, et al.: J. Am. Ceram. Soc. Vol. 68 (1985), p. C6.

[3] J . Wu. H . Lin, J.B. Li, et al.: Materials Letters Vol . 63 (2009), p.2309. (a) (b) (c) Fig. 1 the SEM of specimens (a) SEM of 2#, the weight-ratio of mullite but added some Fe2O3 (b) SEM of 3# (more SiO2) (c) SEM of 4# (more Fe2O3).

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