Nano-crystal glass-ceramics obtained by crystallization of vitrified red mud.

Abstract:

:Glass has been obtained by melting red mud from Shandong Province in China with different additives. Suitable thermal treatments were employed to convert the obtained glass into nano-crystal glass-ceramics. X-ray diffraction (XRD) patterns showed that the main crystalline phase in both the glass-ceramics is wollastonite (CaSiO3). These crystals are homogeneously dispersed within the parent glass, with an average crystal size of less than 100 nm. The size of nano-crystals varies when different thermal processes were used. Physical and mechanical properties, such as density, thermal expansion coefficient, hardness, and bending strength, of the two glasses have been examined and the corresponding microstructures are discussed. These results demonstrate that both glass-ceramics have potential for a wide range of construction application.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Peng F,Liang KM,Shao H,Hu AM

doi

10.1016/j.chemosphere.2004.11.002

subject

Has Abstract

pub_date

2005-05-01 00:00:00

pages

899-903

issue

6

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(04)01050-1

journal_volume

59

pub_type

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