| 摘要 |
This invention relates to the production of essentially transparent glass-ceramic sheet useful as surfaces for smoothtop cooking stoves which will display a warm brown coloration sufficiently dark to conceal the heating element when not in use, but permitting visible observation thereof when in operation. The products consist essentially, on an analyzed basis, of 2.5-4.5% Li2O, 1-2% MgO, 1-2% ZnO, 19.5-21% Al2O3, 66.5-68% SiO2, 4-5% TiO2, and 0.02-0.2% V2O5.
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