期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 120, 期 1-3, 页码 265-269出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2004.10.028
关键词
fly ash; alpha-cordierite; glass-ceramics; low thermal expansion coefficients
Batches of alpha-cordierite glass-ceramics, designated as GC-I and GC-II, containing 68 and 64 wt.% fly ash, respectively, were crystallized in the temperature range of 1125-1320 degrees C. The XRD (X-ray powder diffractometer) of the glass-ceramics show that alpha-cordierite became the dominant phase in GC-I and GC-II at 1200 degrees C. GC-I and GC-II, whose solid parts contain 74 and 78 vol.% alpha-cordierite and whose compressive strengths are 35 and 50 MPa, respectively, have the respective linear thermal expansion coefficients of 1.51 x 10(-6) and 1.43 x 10(-6)/degrees C. The fly ash alpha-cordierite glass-ceramics can be employed as kiln furniture, honeycomb substrates for catalysts, and heat exchangers. (c) 2005 Elsevier B.V. All rights reserved.
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