HIGH-STRENGTH COLORED GLASS CERAMICS AS A COOKTOP, SMOOTH ON BOTH SIDES

摘要

PURPOSE: A colored glass ceramic with high strength and flat surfaces as a cooktop is provided to obtain an excellent display function as the under side of the cooktop is flat and unstructured to be designed on a co-plane with the upside. CONSTITUTION: A glass ceramic cooktop(1) comprises flat upper and lower surfaces(2,3). The transmissivity value of a glass ceramic material at a visible ray range exceeds 0.1% at a full wavelength band exceeding 420nm. The transmissivity value is 0.8~2.5%. The transmissivity value of infrared rays is 0~85% in 1600nm. The glass-ceramic material comprises high-ratio quartz mixed crystals as a prevalent crystalline phase.