Colored and opaque glass-ceramic(s), associated colorable and ceramable glass(es), and associated process(es)

Abstract

Disclosed herein are glass-ceramics having crystalline phases including β-spodumene ss and either (i) pseudobrookite or (ii) vanadium or vanadium containing compounds so as to be colored and opaque glass-ceramics having coordinates, determined from total reflectance—specular included—measurements, in the CIELAB color space of the following ranges: L*=from about 20 to about 45; a*=from about −2 to about +2; and b*=from about −12 to about +1. Such CIELAB color space coordinates can be substantially uniform throughout the glass-ceramics. In each of the proceeding, β-quartz ss can be substantially absent from the crystalline phases. If present, β-quartz ss can be less than about 20 wt % or, alternatively, less than about 15 wt % of the crystalline phases. Also Further crystalline phases might include spinel ss (e.g., hercynite and / or gahnite-hercynite ss), rutile, magnesium zinc phosphate, or spinel ss (e.g., hercynite and / or gahnite-hercynite ss) and rutile.

Description

[0001] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 61 / 693875, filed August 28, 2012, which application is based upon and is hereby incorporated by reference in its entirety. technical field [0002] Aspects and / or embodiments of embodiments of the present invention relate generally to the technical field of glass materials, and more particularly to the technical field of opaque glass-ceramic materials. Additionally, aspects and / or embodiments of embodiments of the present invention relate to one or more glass compositions (hereinafter referred to as "tintable and ceramizable glass" or "ceramizable and tintable glass") that can Ceramicized as: black or gray and opaque glass-ceramic containing β-spodumene solid solution (β-spodumene ss) and either (i) brookite or (ii) vanadium or vanadium-containing Compounds (hereinafter referred to as "colored and opaque glass-ceramics" or "opaque and colored glass-ceramics"), colored and op...

AI Technical Summary

Problems solved by technology

Unfortunately, the increased weight of the stronger and more rigid plastic construction may lead to user dissatisfaction, however, the buckling and bending of the lighter construction may damage the internal / electronic components of the portable computing device, which will almost certainly result in user dissatisfaction. dissatisfied

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