Glass ceramic, glass ceramic product and manufacturing method of glass ceramic product
A technology of glass ceramics and products, which is applied in the field of glass ceramics and can solve problems such as difficult chemical strengthening and difficult performance
Active Publication Date: 2021-06-08
CDGM OPTICAL GLASS +1
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Problems solved by technology
Research on existing technologies has found that glass ceramics treated by chemical strengthening process can obtain more excellent mechanical properties, but the glass ceramics currently on the market are not easy to be chemically strengthened, or their properties are difficult to achieve after chemical strengthening. or electronic equipment requirements
Method used
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Embodiment
[0216] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided. Efforts have been made to ensure accuracy with respect to values (eg, amounts, temperature, etc.) in the embodiments of the invention, but some errors and deviations must be accounted for. The composition itself is given in weight % based on oxides and has been normalized to 100%.
[0217]
[0218] In this example, glass ceramics having the compositions shown in Tables 1 to 3 were obtained by using the above-mentioned manufacturing method of glass ceramics. In addition, the characteristics of each glass ceramic were measured by the test method described in this invention, and the measurement result is shown in Table 1-Table 3.
[0219] Table 1.
[0220]
[0221]
[0222] Table 2.
[0223]
[0224]
[0225] table 3.
[0226]
[0227]
[0228]
[0229]
[0230] In this example, glass ceramic...
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Abstract
The invention provides a glass ceramic. The glass ceramic contains lithium silicate, quartz and a quartz solid solution crystal phase, and the total content of the lithium silicate, the quartz and the quartz solid solution crystal phase is higher than other crystal phases in percentage by weight. The glass ceramic comprises the following components in percentage by weight: 60-80% of SiO2+Al2O3, 2-10% of P2O5, 0.5-10% of ZrO2, greater than 0 but less than or equal to 10% of Ln2O3, and 21.5-30% of Li2O+Na2O+K2O, wherein the ratio of the Li2O+Na2O+K2O to the Ln2O3 is 2.5-25, and the Ln2O3 is one or more of La2O3, Gd2O3, Y2O3 and Yb2O3. Through reasonable component design, the obtained glass ceramic is suitable for chemical strengthening; and meanwhile, the glass ceramic and the glass ceramic product obtained by the invention have excellent mechanical properties and meet the use requirements of display equipment or electronic equipment.
Description
technical field [0001] The invention relates to a glass ceramic, in particular to a glass ceramic with excellent mechanical properties, a glass ceramic product and a manufacturing method thereof. Background technique [0002] Portable electronic devices such as mobile phones, watches, PADs, portable media players, personal computers, and cameras use cover glass to protect their internal structures. In addition, in automotive optical equipment, cover glass is also used to protect the lens inside. The cover glass may be damaged after being impacted by a hard surface, which requires the cover glass to have excellent mechanical properties in order to reduce negative impacts during use and prolong its service life. In the past, chemically strengthened glass was often used as cover glass for protecting portable electronic devices and automotive optical devices. However, conventional chemically strengthened glass is very prone to cracks perpendicular to the glass surface. A break...
Claims
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IPC IPC(8): C03C10/04C03C10/14C03B32/02C03C21/00
CPCC03C10/0018C03C10/0027C03B32/02C03C21/002
Inventor 原保平于天来蒋焘聂小兵胡邦红司合帅黄开文
Owner CDGM OPTICAL GLASS