The influence of Al2O3 / SiO2 ratio on properties of pegmatite porous glass-ceramics

Author

Yang, Mei ; Huang, Feng-yuan ; Chen, Hao

Author_Institution

Coll. of Chem. Eng. & Mater., Eastern Liaoning Univ., Dandong, China

fYear

2011

fDate

24-26 June 2011

Firstpage

4627

Lastpage

4630

Abstract

CaO-Al₂O₃-SiO₂ porous glass-ceramic was synthesized with different Al₂O₃/SiO₂ ratios. DTA, XRD, SEM, 3-point bending and acid resistance as well as alkali resistance were tested in the paper to focus the effect of Al₂O₃/SiO₂ ratio on the properties of porous pegmatite glass-ceramics. The results show that parawollastonite as the main crystal phase is kept stable with the increasing of Al₂O₃/SiO₂ ratio, while the amounts of parawollastonite decrease. The compressive strength and flexural strength of the samples were dropped with the increasing of the ratio. The maximum flexural strength loss of the samples after acid resistance and alkali resistance tests achieved 0.2945 and 0.301, respectively.

Keywords

X-ray diffraction; aluminium compounds; bending; bending strength; calcium compounds; compressive strength; differential thermal analysis; glass ceramics; porous materials; scanning electron microscopy; silicon compounds; 3-point bending; CaO-Al₂O₃-SiO₂; DTA; SEM; XRD; acid resistance; alkali resistance tests; compressive strength; crystal phase; flexural strength; parawollastonite; pegmatite porous glass-ceramics; Aluminum oxide; Ceramics; Conductivity; Educational institutions; Resistance; X-ray scattering; Parawollastonite; Porous glass-ceramics; acid resistance; alkali resistance; compressive strength; flexural strength;

fLanguage

English

Publisher

ieee

Conference_Titel

Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-9172-8

Type

conf

DOI

10.1109/RSETE.2011.5965347

Filename

5965347