公开(公告)号：US20210155524A1

公开(公告)日：2021-05-27

申请号：US17101408

申请日：2020-11-23

Applicant: CORNING INCORPORATED

Inventor： Qiang Fu ,  Rohit Rai ,  John Richard Ridge ,  Ljerk Ukrainczyk

IPC: C03B32/02 ,  C03C1/02 ,  C03C10/00

Abstract: Methods of forming a glass-ceramic article, the method are provided. Embodiments of the method may include initially nucleating a precursor glass composition at a first nucleation temperature and maintaining the first nucleation temperature for a pre-nucleating time period to produce a pre-nucleated crystallizable glass composition, wherein the pre-nucleated crystallizable glass composition comprises 5 wt % to 20 wt % crystalline phase ASTM C1365-18, forming the pre-nucleated crystallizable glass composition into an initial 3D shape; further nucleating the initial 3D shape for a nucleating time period to a second nucleation temperature to produce a nucleated crystallizable glass composition; and ceramming the nucleated crystallizable glass composition to a crystallization temperature and maintaining the ceramming temperature for a crystallization time period to produce the glass-ceramic article. The glass-ceramic article may have a final 3D shape is within 0.1 mm of the original design specifications.