Patent · US Active

Ion-exchanged glass of high surface compression and shallow depth of layer with high resistance to radial crack formation from vickers indentation

US9783452B2 · kind B2 · utility

2Cited by

16References

10Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Jonathan David Pesansky · Corning, US
Chandan Kumar Saha · Franklin, US
Trevor Edward Wilantewicz · Sunnyvale, US

Key dates

Filing date	Nov 19, 2014
Grant date	Oct 10, 2017
Priority date	—
Expiry date	Jul 17, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/315
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Disclosed are alkali aluminosilicate glasses having unexpected resistance to indentation cracking. The glasses obtain this high resistance as a result of a high level of surface compression accompanied by a shallow depth of layer. The advantaged glasses show greater resistance to radial crack formation from Vickers indentation than glasses with the same compressive stress, but higher depths of layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.