Invention Grant
- Patent Title: Crystallized glass with negative coefficient of thermal expansion and method for manufacturing the same
- Patent Title (中): 具有负的热膨胀系数的结晶玻璃及其制造方法
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Application No.: US13225561Application Date: 2011-09-06
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Publication No.: US08741791B2Publication Date: 2014-06-03
- Inventor: Tae Heung Kim , Duck Ki Yoon , Kang Taek Lee , Hyung Sik Lim , Ki Tae Kim
- Applicant: Tae Heung Kim , Duck Ki Yoon , Kang Taek Lee , Hyung Sik Lim , Ki Tae Kim
- Applicant Address: KR Gyeongsangnam-do
- Assignee: Jeongkwan Co., Ltd
- Current Assignee: Jeongkwan Co., Ltd
- Current Assignee Address: KR Gyeongsangnam-do
- Agency: Loza & Loza, LLP
- Agent Julio M. Loza
- Priority: KR10-2010-0087026 20100906
- Main IPC: C03C10/12
- IPC: C03C10/12

Abstract:
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.
Public/Granted literature
- US20120058876A1 CRYSTALLIZED GLASS WITH NEGATIVE COEFFICIENT OF THERMAL EXPANSION AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2012-03-08
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