Invention Grant
- Patent Title: Method for controlling surface features on glass-ceramic articles and articles formed therefrom
-
Application No.: US15051003Application Date: 2016-02-23
-
Publication No.: US10239782B2Publication Date: 2019-03-26
- Inventor: Brandon Allen Bazemore , Jun Hou , Yuhui Jin , Eungsik Park , Tammy Lynn Petriwsky
- Applicant: CORNING INCORPORATED
- Applicant Address: US NY Corning
- Assignee: CORNING INCORPORATED
- Current Assignee: CORNING INCORPORATED
- Current Assignee Address: US NY Corning
- Agent Kevin M. Johnson
- Main IPC: C03C15/00
- IPC: C03C15/00

Abstract:
A method for increasing the tactile feel of a glass-ceramic article includes (a) performing a first etching of a surface of the glass-ceramic article with a first etchant to create a plurality of features on the surface, wherein the first etchant comprises hydrofluoric acid and an inorganic fluoride salt, and the plurality of features comprises protrusions and recesses and (b) performing a second etching of the surface with a second etchant different from the first etchant to enlarge a distance between adjacent features of a same type, wherein the second etching occurs after the first etching, after the second etching an average distance between adjacent features of a same type is in a range from 0.5 μm to 20 μm and a density of features of the same type is in a range from 9,000 to 25,000 features/mm2, and a tactile feel of the surface after the second etching is greater than the tactile feel of the surface before the first etching.
Public/Granted literature
- US20160251259A1 METHOD FOR CONTROLLING SURFACE FEATURES ON GLASS-CERAMIC ARTICLES AND ARTICLES FORMED THEREFROM Public/Granted day:2016-09-01
Information query