Transparent Glass-Ceramics Derived from Spontaneously Crystallized Phosphosilicte Glasses

Abstract:

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Transparent phosphosilicate glass-ceramics were prepared by heating the spontaneously crystallized precursor glasses in which crystals have formed during cooling of the melts. And the effects of compositional variation on the crystalline phases, degree of crystallization and transparency were investigated by using X-ray diffraction (XRD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). It is found that Mg2+ tends to exist in silicate-rich phase rather than phosphate-rich phase, such MgO is more beneficial to the transparency of phosphosilicate glass-ceremics compared to CaO. In addition, the substitution of P2O5 for SiO2 enhances the tendency of phase separation, and hence the precipitation of Na2MgSiO4 crystals for the precursor glasses as well as glass-ceramics with good transparency.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

1096-1100

DOI:

10.4028/www.scientific.net/AMR.239-242.1096

Citation:

S. J. Liu and Y. F. Zhang, "Transparent Glass-Ceramics Derived from Spontaneously Crystallized Phosphosilicte Glasses", Advanced Materials Research, Vols. 239-242, pp. 1096-1100, 2011

Online since:

May 2011

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$35.00

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