Title :
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
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;
Conference_Titel :
Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9172-8
DOI :
10.1109/RSETE.2011.5965347
