Composite ceramic carrier for large glass base plate film coating device and preparation method thereof
A technology for large glass substrates and composite ceramics, which is used in the preparation of special industrial ceramics and the silicate industry. It can solve problems such as unsatisfactory repeatability, unstable quality of large glass substrates, and differences in thermal conductivity, and achieve low surface roughness. High strength, good fracture toughness, and stable product quality
Active Publication Date: 2012-04-18
江苏省陶瓷研究所有限公司
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Problems solved by technology
Its fracture toughness and corrosion resistance are good, and it has a finer microstructure, but there are differences in thermal conductivity between batches, and the repeatability is not ideal, resulting in unstable quality of large glass substrates, and its cost is Al 2 o 3 more than 4 times of
Method used
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Effect test
Embodiment 1
[0030]
[0031] In this example, α-Al 2 o 3 Micropowder (1.5-3μm accounts for 40%, 3 , Fracture toughness 6.23MPa·ml / 2, flexural strength 415MPa, thermal stability 800℃~20℃.
Embodiment 2
[0033]
[0034] In this example, α-Al 2 o 3 Micropowder (1.5-3μm accounts for 45%, 3 , Fracture toughness 6.08MPa·ml / 2, flexural strength 411MPa, thermal stability 800℃~20℃.
Embodiment 3
[0036]
[0037] In this example, α-Al 2 o 3Micropowder (1.5-3μm accounts for 50%, 3 , Fracture toughness 6.02MPa·ml / 2, flexural strength 421MPa, thermal stability 800℃~20℃.
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Abstract
The invention relates to a composite ceramic carrier for a large glass base plate film coating device, which belongs to the field of preparation of ceramics of silicate industries and special industries. The composite ceramic carrier is formed by mixing alpha-Al2O3, SiC, a mineralizing agent and Li2O, adding a methylcellulose aqueous solution, mixing, ball-milling, staling, granulating, moulding by isostatic press and finally sintering. The product has good fracture toughness, thinner microstructure, lower surface roughness, higher thermal stability, corrosion resistance and electrical performance after polishing, more favorable repeatability between batches, stable product quality and lower cost.
Description
technical field [0001] The invention belongs to the fields of silicate industry and preparation of special industrial ceramics, and provides a ceramic carrier for a large-scale glass substrate coating device for a thin film transistor liquid crystal display (TFT-LCD). Background technique [0002] With the continuous popularization of digital TV, the user market's demand for large-screen liquid crystal display TFT-LCD is also increasing. Compared with traditional color displays, liquid crystal displays (LCDs) have the advantages of thinness, low power consumption, no electromagnetic radiation, long life, high display quality, stable images, and no flickering. It is converted into an analog signal and then output by a traditional display. The TFT array process is a key process in the manufacture of TFT-LCD, which requires high temperature and strong corrosion conditions. This product is the core component of the device for continuous film formation on large glass substrates...
Claims
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IPC IPC(8): C03C17/00C04B35/10
Inventor 浦雪琴邱永斌许小静朱军
Owner 江苏省陶瓷研究所有限公司