发明名称 |
Crystallized glass with negative coefficient of thermal expansion and method for manufacturing the same |
摘要 |
A crystallized glass with negative coefficient of thermal expansion includes 38 wt % to 64 wt % of silica (SiO2); 30 wt % to 40 wt % of alumina (Al2O3); and 5 wt % to 12 wt % of lithium oxide (Li2O) as a basic component, and further includes more than one component selected from the group consisting of 0.5 wt % to 15 wt % of zirconia (ZrO2), 0.5 wt % to 6.5 wt % of titanium dioxide (TiO2), 0.5 wt % to 4 wt % of phosphorus pentoxide (P2O5), 2 wt % to 5 wt % of magnesium oxide (MgO), and 0 wt % to 5 wt % of magnesium fluoride (MgF2) in addition to the basic components. The crystallized glass may have a high negative coefficient of thermal expansion so that it has an advantage that it can be used as a thermal expansion compensation material according to the temperatures of all kinds of glasses and similar products thereof. |
申请公布号 |
US8741791(B2) |
申请公布日期 |
2014.06.03 |
申请号 |
US201113225561 |
申请日期 |
2011.09.06 |
申请人 |
Jeongkwan Co., Ltd |
发明人 |
Kim Tae Heung;Yoon Duck Ki;Lee Kang Taek;Lim Hyung Sik;Kim Ki Tae |
分类号 |
C03C10/12 |
主分类号 |
C03C10/12 |
代理机构 |
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代理人 |
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主权项 |
1. A method for manufacturing a crystallized glass with negative coefficient of thermal expansion, comprising
(a) weighing and mixing compositions; (b) calcining the mixed compositions; (c) sintering the calcined compositions; and (d) slow-cooling the sintered compositions; wherein the compositions includes 38 wt % to 64 wt % of silica (SiO2), 30 wt % to 40 wt % of alumina (Al2O3), and 5 wt % to 12 wt % of lithium oxide (Li2O) as a basic component, and further includes more than one component selected from the group consisting of 0.5 wt % to 15 wt % of zirconia (ZrO2), 0.5 wt % to 6.5 wt % of titanium dioxide (TiO2), 0.5 wt % to 4 wt % of phosphorus pentoxide (P2O5), and 0.1 wt % to 5 wt % of magnesium fluoride (MgF2) in addition to any other components.
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地址 |
Gyeongsangnam-do KR |