METHOD TO INCREASE THE STRENGTH OF A FORM BODY OF A LITHIUM SILICATE GLASS CERAMIC |
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| 申请号 | US15160432 | 申请日 | 2016-05-20 | 公开(公告)号 | US20160340237A1 | 公开(公告)日 | 2016-11-24 |
| 申请人 | DENTSPLY SIRONA Inc.; | 发明人 | Stefan FECHER; Lothar VÖLKL; | ||||
| 摘要 | The invention relates to a method to derive a medical form body of lithium silicate glass ceramic. To increase its strength it is proposed that in the form body comprising lithium silicate glass or containing lithium silicate glass the lithium ions are replaced by alkali ions of greater diameter to generate a surface compressive stress. To this end the form body is covered with a melt containing an alkali metal for which an aliquoted quantity of salt containing the alkali metal is used. | ||||||
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