- 专利标题： Glass-ceramic article and method
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申请号： US3573076D申请日： 1969-03-03
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公开(公告)号： US3573076A公开(公告)日： 1971-03-30
- 发明人: RITTLER HERMANN L
- 申请人： CORNING GLASS WORKS
- 专利权人： Corning Glass Works
- 当前专利权人： Corning Glass Works
- 优先权： US80397469 1969-03-03; US36516164 1964-05-05; US36517964 1964-05-05; US36520364 1964-05-05; US36503564 1964-05-05; US36511764 1964-05-05; US36517764 1964-05-05; US36517864 1964-05-05; US36519864 1964-05-05; US36519964 1964-05-05; US36520164 1964-05-05; US36520264 1964-05-05
- 主分类号： C03B23/08
- IPC分类号： C03B23/08 ; C03B23/09 ; C03C10/00 ; C03C21/00 ; C03C3/22
摘要：
THIS INVENTION RELATES TO THE STRENGTHENING OF GLASS CERAMIC ARTICLES WHEREN THE CRYSTAL CONTENT THEREOF COMPRISES THE PREDOMINANT PORTION AND CONTAINING BETA-QUARTZ STUFFED WITH LITHIUM AND MAGENSIUM IONS AS THE PRINCIPAL CRYSTAL PHASE. THE STRENGTHENING EFFECT IS ACHIEVED THROUGH AN ION EXCHANGE PROCESS TAKING PLACE WITHIN A SURFACE LAYER OF THE GLASS-CERAMIC ARTICLE WHEREIN POTASSIUM IONS FROM AN EXTERNAL SOURCE ARE EXCHANGE DFOR LITHIUM IONS IN THE BETA-QUARTZ, BUT WHEREIN THE STRUCTURAL NATURE OF THE CRYSTALS REMAIN ESSENTIALLY UNCHANGED, TO CAUSE COMPRESSIVE STRESSES TO BE DEVELOPED IN THIS SURFACE LAYER.