LAS crystallized glass including Y2O3 and Fe2O3 and manufacturing method of the same

摘要

The present invention relates to a crystallized glass of LAS (Li ₂ O-Al ₂ O ₃ -SiO ₂ ) containing Y ₂ O ₃ and Fe ₂ O ₃ and a method for manufacturing the same, more specifically Li ₂ O, Al ₂ O ₃ , SiO ₂ raw material or a precursor for generating the raw material by heat treatment, and Y ₂ O ₃ , Fe ₂ O ₃ And mixing the additive containing the Zr-based compound; Preparing a melt by heating and melting the mixed raw material and additives; Cooling the me And LAS (Li ₂ O-Al ₂ O ₃ -SiO ₂ containing Y ₂ O ₃ and Fe ₂ O ₃ characterized in that it contains; A method of manufacturing a crystallized glass based on LA and a crystallized glass of LAS produced by such a method is provided. According to the present invention as described above, it is possible to expect an effect of improving the stability of the LAS crystallized glass in use at high temperatures by shifting the temperature of the rapid increase in the coefficient of thermal expansion of the LAS crystallized glass to a higher temperature than before.