Yunpeng Li, Yanjie Shi, Qi An, Lida Luo, Qingwei Wang
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Preparation and properties of Li2O - Al2O3 - SiO2 glass-ceramic fibers with microcrystallization
The micro crystallization of glass fibers would be expected to enhance their mechanical and chemical properties, thereby facilitating their further utilization. In this paper, glass-ceramic fibers were prepared by crystallizing Li2O-Al2O3-SiO2 (LAS) glass fibers. The effect of crystallization time on lithium-aluminum-silica glass-ceramic fibers was investigated. The results demonstrate that pristine glass fibers are highly susceptible to crystallizing in the form of surface crystallization. LAS glass-ceramic fibers with a diameter of 20 μm were prepared with tensile strengths up to 270 MPa and a significant improvement in alkali resistance. The precipitated hydrogen aluminum silicate and lithium silicate grains from glass fibers were dispersed in the glass network, which increased the density of the glass network. This, in turn, improved the chemical properties of the fibers.
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Journal of the Australian Ceramic Society since 1965
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