CRYSTALLIZED GLASS AND TOP PLATE FOR COOKING DEVICE COMPRISING SAME

摘要

A crystallized glass comprises, in term of mass%, 55 to 73% of SiO 2 , 17 to 25% of Al 2 O 3 , 2 to 5% of Li 2 O, 4 to 5.5% of TiO 2 , 0. 05 to less than 0.2% of SnO 2 , and 0. 02 to 0.1% of V 2 O 5 . The crystallized glass has a ratio V 2 O 5 /(SnO 2 +V 2 O 5 ) of 0.2 to 0.4 and is substantially free of As 2 O 3 and Sb 2 O 3 .