JPS55136147A - Glass tempering method by ion exchange - Google Patents
Glass tempering method by ion exchangeInfo
- Publication number
- JPS55136147A JPS55136147A JP4378779A JP4378779A JPS55136147A JP S55136147 A JPS55136147 A JP S55136147A JP 4378779 A JP4378779 A JP 4378779A JP 4378779 A JP4378779 A JP 4378779A JP S55136147 A JPS55136147 A JP S55136147A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- sio
- ions
- alkali
- tempered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
PURPOSE: To convert alkali oxide-Al2O3-SiO2 glass into low expansion tempered glass by dipping the former glass whose alkali oxide is specified to Li2O, a mixt. of Li2O and Na2O, or the like in a copper salt at a high temp. to exchange alkali ions for copper ions.
CONSTITUTION: Li2O-Al2O3-SiO2 glass, Li2O-Na2O-Al2O3-SiO2 glass, Na2O-K2O- Al2O3-SiO2 glass or Li2O-K2O-Al2O3-SiO2 glass as alkali oxide- Al2O3-SiO2 glass is tempered as follows: it is dipped in a copper salt such as CuCl heated to a high temp. to substitute copper ions for part or all of alkali ions in the glass, thus giving tempered glass whose tensile strength is, e.g., more than twice as high as that of unexchanged glass.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4378779A JPS55136147A (en) | 1979-04-10 | 1979-04-10 | Glass tempering method by ion exchange |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4378779A JPS55136147A (en) | 1979-04-10 | 1979-04-10 | Glass tempering method by ion exchange |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55136147A true JPS55136147A (en) | 1980-10-23 |
Family
ID=12673453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4378779A Pending JPS55136147A (en) | 1979-04-10 | 1979-04-10 | Glass tempering method by ion exchange |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55136147A (en) |
-
1979
- 1979-04-10 JP JP4378779A patent/JPS55136147A/en active Pending
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