Properties of Ultra-low Thermal Expansion LAS Transparent Glass-ceramics Prepared by Spodumene
摘要
The glass-ceramics were prepared with the spodumene mineral as the main raw material, and the effects of ZrO2 replacing TiO2 on the samples were systematically investigated. The results show that the substitution of ZrO2 for TiO2 is not conductive to precipitate β-quartz solid solution phase, but can improve the transparency and flexural strength of glass-ceramics. And the glass-ceramic with the highest visible light transmittance (87%) and flexural strength (231.80 MPa) exhibits an ultra-low thermal expansion of −0.028×10−7 K−1 in the region of 30–700 °C.