METHOD FOR FORMING GLASS-CERAMIC ARTICLES AND GLASS-CERAMIC ARTICLES FORMED THEREFROM

    公开(公告)号:US20210276913A1

    公开(公告)日:2021-09-09

    申请号:US17049600

    申请日:2019-04-18

    IPC分类号: C03B32/02 C03C4/02

    摘要: A process for making a glass-ceramic article includes annealing an as-formed glass article formed from a glass-ceramic composition at a first temperature for a duration sufficient to nucleate a plurality of nuclei within a vitreous matrix of the as-formed glass article and forming a post-nucleation glass article. The process also includes annealing the post-nucleation glass article at a second temperature for a duration sufficient to grow crystalline grains within the vitreous matrix of the post-nucleation glass article and forming a glass-ceramic article. The first temperature is less than a glass transition temperature for the glass-ceramic composition and the second temperature is greater than the glass transition temperature for the glass-ceramic composition.

    METHODS AND APPARATUS FOR PREDICTING GLASS DYNAMICS

    公开(公告)号:US20210034799A1

    公开(公告)日:2021-02-04

    申请号:US17066799

    申请日:2020-10-09

    摘要: Computer-implemented methods and apparatus are provided for predicting/estimating (i) a non-equilibrium viscosity for at least one given time point in a given temperature profile for a given glass composition, (ii) at least one temperature profile that will provide a given non-equilibrium viscosity for a given glass composition, or (iii) at least one glass composition that will provide a given non-equilibrium viscosity for a given time point in a given temperature profile. The methods and apparatus can be used to predict/estimate stress relaxation in a glass article during forming as well as compaction, stress relaxation, and/or thermal sag or thermal creep of a glass article when the article is subjected to one or more post-forming thermal treatments.

    Multichroic glasses
    6.
    发明授权

    公开(公告)号:US10526537B2

    公开(公告)日:2020-01-07

    申请号:US15034765

    申请日:2014-11-14

    IPC分类号: C09K11/77 C03C3/095 C03C4/12

    摘要: A glass having from greater than or equal to about 0.1 mol. % to less than or equal to about 20 mol. % Ho2O3, and one or more chromophores selected from V, Cr, Mn, Fe, Co, Ni, Se, Pr, Nd, Er, Yb, and combinations thereof. The amount of Ho2O3 (mol. %) is greater than or equal to 0.7 (CeO2 (mol. %)+Pr2O3 (mol. %)+Er2O3 (mol. %)). The glass can include one or more fluorescent ions selected from Cu, Sn, Ce, Eu, Tb, Tm, and combinations thereof in addition to, or in place of the chromophores. The glass can also include multiple fluorescent ions.

    Enclosures having an improved tactile surface

    公开(公告)号:US10473829B2

    公开(公告)日:2019-11-12

    申请号:US15407964

    申请日:2017-01-17

    摘要: Embodiments of an electronic device comprising an enclosure and electrical components disposed at least partially inside the enclosure, wherein the enclosure comprises a substrate having a tactile surface are disclosed. The tactile surface may include a textured surface, a coated surface or a coated textured surface that exhibits a low fingerprint visibility, when a fingerprint is applied to the tactile surface. In one or more embodiments, the substrate exhibits an average transmittance of about 80% or greater over the visible spectrum, a coefficient of friction less than about 0.3, a surface roughness Ra of about 500 nm or greater, and either one or both a transmission haze greater than about 60%, and a reflection haze at either 2 degrees from specular or 5 degrees from specular greater than 60%.