Introduction to Transparent Alumina Ceramics

Transparent alumina ceramics mainly refer to a polycrystalline material with transparency manufactured using the process of alumina ceramics, which not only possesses the high hardness, high strength, corrosion resistance, high temperature resistance, and excellent chemical stability that alumina ceramics should have. At the same time, it also possesses the optical properties of glass, as well as excellent dielectric and other related properties that cannot be compared to other materials. This is because with these excellent properties, transparent alumina ceramics can be widely used in fields such as laser technology, high-temperature technology, lighting technology, and wireless electronics.

Transparent alumina ceramics can be mainly divided into the following types in the molding process:

Injection molding, dry compression molding, static pressure molding, and extrusion molding. However, using these types of forming techniques is actually difficult to produce transparent ceramic blanks with a thickness between tens of micrometers and 1mm, and a smooth surface without any defects.

The casting forming technology can manufacture and produce single-phase or multiphase ceramic thin sheets, and is the most effective processing technology for producing such structural materials. The most important thing is that it has high production efficiency, which not only allows continuous operations, but also has a very small size of defects. The key is that the product has small fluctuations in composition, so the overall performance is exceptionally stable; It can also be processed and produced in large quantities, making it more suitable for manufacturing large sheet ceramics. In order to achieve better flexibility in the product, it is necessary to add an appropriate amount of organic matter under normal circumstances, which requires strict process parameters. Otherwise, it will lead to stripes and peeling of transparent alumina ceramics, as well as other defects such as low strength of the blank and difficulty in peeling. Moreover, because almost all organic matter is toxic, it is easy to cause serious environmental pollution.

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