公开(公告)号：US11155494B2

公开(公告)日：2021-10-26

申请号：US16087853

申请日：2017-03-24

Applicant: CORNING INCORPORATED

Inventor： David Aaron Burnett ,  Shai Negev Shafrir ,  Kevin Eugene Spring ,  Vijay Subramanian

IPC: C03C19/00 ,  C03C21/00 ,  C03B33/10 ,  B32B7/022 ,  B32B7/027 ,  B32B3/26 ,  B32B17/06 ,  B26D1/00 ,  B26F1/16 ,  B26F1/38

Abstract: A glass article (100) includes a core layer (102) formed from a core glass composition with a core coefficient of thermal expansion (CTE) and first (104) and second (106) cladding layers fused to first and second major surfaces of the core layer (102) and formed from a clad glass composition comprising a clad CTE. An aperture (120) extends through each of the core layer (102), the first cladding layer (104), and the second cladding layer (106). The clad CTE is less than the core CTE such that each of the first (104) and second (106) cladding layers is under a compressive stress and the core layer (102) is under a tensile stress. A flexural strength of the glass article (100) can be at least about 75 MPa. A peak load sustainable by the glass article (100) in a modified ring-on-ring test can be at most 96.5% less than a peak load sustainable by a reference glass article in the modified ring-on-ring test.

公开(公告)号：US20200299185A1

公开(公告)日：2020-09-24

申请号：US16087853

申请日：2017-03-24

Applicant: CORNING INCORPORATED

Inventor： David Aaron Burnett ,  Shai Negev Shafrir ,  Kevin Eugene Spring ,  Vijay Subramanian

IPC: C03C19/00 ,  C03C21/00 ,  B32B17/06 ,  B32B7/027 ,  B32B7/022 ,  B32B3/26

Abstract: A glass article (100) includes a core layer (102) formed from a core glass composition with a core coefficient of thermal expansion (CTE) and first (104) and second (106) cladding layers fused to first and second major surfaces of the core layer (102) and formed from a clad glass composition comprising a clad CTE. An aperture (120) extends through each of the core layer (102), the first cladding layer (104), and the second cladding layer (106). The clad CTE is less than the core CTE such that each of the first (104) and second (106) cladding layers is under a compressive stress and the core layer (102) is under a tensile stress. A flexural strength of the glass article (100) can be at least about 75 MPa. A peak load sustainable by the glass article (100) in a modified ring-on-ring test can be at most 96.5% less than a peak load sustainable by a reference glass article in the modified ring-on-ring test.