公开(公告)号：US20230068588A1

公开(公告)日：2023-03-02

申请号：US18053573

申请日：2022-11-08

Applicant: AGC Inc.

Inventor： Kaname SEKIYA ,  Yusuke FUJIWARA

IPC: C03C21/00 ,  C03C3/083 ,  C03C4/18

Abstract: The present invention relates to a chemically strengthened glass having a thickness of t [mm], and having a profile of a stress value CSx [MPa,] at a depth x [µm] from a surface of the glass, the stress value being measured by a scattered-light photoelastic stress meter, in which a second-order differential value CSx" of the stress value CSx in the profile satisfies the following expression within a range of CSx≥0: 0

公开(公告)号：US20220274868A1

公开(公告)日：2022-09-01

申请号：US17652553

申请日：2022-02-25

Applicant: AGC INC.

Inventor： Kaname SEKIYA ,  Izuru KASHIMA ,  Hiroki TAKAHASHI

IPC: C03C21/00 ,  C03C3/083

Abstract: The present invention relates to a manufacturing method for a chemically strengthened glass, the method including: performing a first ion exchange by immersing a glass for chemical strengthening containing first alkali metal ions in a first molten salt composition containing second alkali metal ions; after the first ion exchange, performing a second ion exchange by immersing the chemically strengthened glass obtained after the first ion exchange in a second molten salt composition containing the first metal ions and third alkali metal ions; continuously using the first molten salt composition after being used for the first ion exchange; and continuously using a second molten salt composition after being used for the second ion exchange, in which: a concentration of the second molten salt composition is controlled by adding the first alkali metal ions to the second molten salt composition and a resulting second molten salt composition is used continuously.