In:
Solid State Phenomena, Trans Tech Publications, Ltd., Vol. 281 ( 2018-8), p. 242-248
Abstract:
This paper reports the effects of γ-Al 2 O 3 and α-Al 2 O 3 on the properties of lightweight insulation materials. The phase compositions, microstructure and mechanical properties of lightweight insulation materials are separately investigated by XRD, SEM and tabulate thermal conductivity apparatus methods. The results indicate that the increasing of the amount of γ-Al 2 O 3 is beneficial to improving the bulk density, compressive strength and acid resistance of the fired specimens. The fact negatively impacts on the increasing of the apparent porosity; however, it has no significant effect on the thermal conductivity of specimens. Meanwhile, the studies highlight that when the content of γ-Al 2 O 3 increases, the nucleation and growth of mullite is accelerated at high calcination temperature, which has positive effect on improving the physicochemical properties of lightweight insulation materials. And the γ-Al 2 O 3 -free SiO 2 glass phase system is guided by theoretical analysis of reaction conditions for non-catalytic system with Factsage modelling.
Type of Medium:
Online Resource
ISSN:
1662-9779
DOI:
10.4028/www.scientific.net/SSP.281
DOI:
10.4028/www.scientific.net/SSP.281.242
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2018
detail.hit.zdb_id:
2051138-3