High Temperature Resistance Effect of SrO/(SrO+CaO) in Alkali-Free Boro-Aluminosilicate Glasses

Abstract:

This paper studied the change regulation of the electrical resistivity of alkali-free boro-aluminosilicate glasses with the rate of SrO/(CaO + SrO) in the range 600~1600°C.The results showed that a mixed alkaline effect was observed with the increase of SrO content in alkali-free aluminoborosilcate glasses: the maximam resistivity of 178Ωcm appeared at SrO/(CaO+SrO) ratio =0.24, which is much larger than 108Ωcm at SrO=0. Meanwhile, the experiment results showed that the SrO makes stronger influence on the resistivity of the glass than CaO does. The Arrhenius plots, which showed the change of the resistivity with temperature in range of 1100~1625°C, present nonlinear variation, and an inflection at about 1100°C. It proved that the electrical resistivity of the alkali-free aluminoborosilcate glasses were controlled by the ionic radius of alkaline earth metals and the viscosity of glass melts.

• Periodical: Advanced Materials Research (Volume 704)
• Pages: 149-154
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.704.149
• Online since: June 2013
• Authors: Ying Liang Tian, Xian Long Guo, Man Kang Zhu, Shi Bing Sun, Yong Li Li, Wen Tai Liu, Jack Y Ding
• Keywords: Alkali-Free Aluminoborosilcate Glasses, High Temperature Electrical Resistance, Mixed Alkaline Effect, SrO/(SrO+CaO) Ratio

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