Patent ID: 9133054
Filing Date: 2015-09-15
Classification: C03B,C03C,Y10T

Abstract:
1. An IX, β-spodumene glass-ceramic comprising: a. a nominal composition, in mole percent (mole %), comprising: b. a ratio:  between 0.7 to 1.5; c. a ratio:  greater than about 0.04; d. one or more β-spodumene solid solutions comprising at least about 70 wt % of the crystalline phases of the glass-ceramic; e. at least one Ti-containing crystalline phase comprising: f. an opacity comprising ≧about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness; g. a depth of layer (DOL) ≧about 2% of an overall thickness of an article of the IX, β-spodumene glass-ceramic and a compressive stress (σ h. optionally, one or more crystalline phase comprising: wherein the at least one Ti-containing crystalline phase further comprises any one of anatase, a magnesium titanate, and an aluminum titanate; or further comprising mixtures of rutile and two or more of anatase, a magnesium titanate, and an aluminum titanate.