Effects of Al2O3 on the Structure and Properties of Calcium-Magnesium-Silicate Glass Fiber

Hao Liu; Xi Tang Wang; Zhou Fu Wang; Bao Guo Zhang

doi:10.4028/www.scientific.net/AMR.450-451.42

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 450-451Effects of Al2O3 on the Structure and Properties...

Effects of Al₂O₃ on the Structure and Properties of Calcium-Magnesium-Silicate Glass Fiber

Abstract:

Calcium-magnesium-silicate glass fiber is a kind of candidate materials for aluminosilicate ceramic fiber in high temperature resistant field. However, the large thermal shrinkage limits its rapid development and industrial application in high temperature insulation field. It has been known that the shrinkage under high temperatures is mainly affected by the structure and crystallization mechanisms of glass fibers. Thus, Al2O3 was chosen as additive in the chemical composition of glass fiber to investigate the glassy network structure, crystallization and dissolution properties of calcium-magnesium-silicate glass fiber by DTA, XRD and ICP-AES techniques. The results show that with the addition of Al2O3, the glassy network structure was strengthened and the precipitation of crystals was inhibited for heat-treated fibers. As for the dissolution properties in physiological fluids, though the weight losses, changes of pH values and leached ions concentration lowered slightly with the addition of Al2O3 for the intensified network structure, fibers still present high dissolution rates.

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Periodical:

Advanced Materials Research (Volumes 450-451)

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42-45

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.450-451.42

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Online since:

January 2012

Authors:

Hao Liu, Xi Tang Wang, Zhou Fu Wang, Bao Guo Zhang

Keywords:

Crystallization, Dissolution, Glass Fiber

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