Coated glass flakes and glass flakes

摘要

The scale condition glass (10) where heat resistance and chemical durability improve, mass % with displaying, 60 SiO2 70, 5 Al2O3 15, 1 MgO 10, 10 CaO 25 and the 4 (Li₂ O+Na2O+K2O) is filled up is formed 9 from the glass body which. As for the temperature difference t which deducts devitrification temperature from job temperature of the glass body, it is desirable to be 0 - the 200 . As for glass transition temperature of the glass body, it is desirable to be 560 - the 750 . As for w which is acid proof index of the glass body, 0.05 - 1.2 mass % it is desirable to be.