High Purity Alumina (Al2O3) Ceramic Gasket Disk Crucible Lids

Product Details

ZYLAB high purity alumina discs are corrosion-resistant and heat-resistant, with double-sided polishing providing high flatness.

They can be used as support materials in high-temperature furnaces or as crucible lids and gaskets in high-temperature experiments.

In the fields of materials science, semiconductors, and electronics, they are often used as substrate materials for thin film deposition and coating experiments.

Alumina Purity: >99%

Maximum temperature resistance: 1750°C

Continuous operating temperature: ≤1600°C

Applications

Support Material in High-Temperature Experiments: Alumina discs can be used as sample supports in high-temperature furnaces, ensuring the stability and safety of the samples during experiments.

Crucible Lids and Gaskets: Due to their heat resistance and chemical corrosion resistance, high-purity alumina discs are often used as crucible lids or gaskets in high-temperature experiments, protecting the samples inside the crucibles from contamination or damage.

Substrate in Materials Science: In the field of materials science, they can serve as substrates for coating experiments, thin film deposition, or other high-temperature processing, ensuring the flatness and chemical purity of material surfaces.

Electronics and Semiconductor Field: Thanks to their excellent electrical insulation properties, alumina discs are commonly used in high-temperature environments within the semiconductor and electronics fields as circuit substrates, insulating sheets, or support materials, ensuring the stable operation of electronic components under high temperatures.

High Purity Alumina Crucibles Notes for Use

1. Before the first use, preheat the crucible in an oven at around 105°C for 120 minutes to remove moisture.

2. Do not directly heat the crucible with gasoline blowtorch, acetylene torch, or alcohol burner to avoid uneven heating and cracking of the product.

3. The heating or cooling rate should not be too fast. The temperature change below 1200°C should be <5°C/minute, and above 1200°C should be ≤4°C/minute. When cooling, it is recommended to control the temperature by powering off gradually. Cooling too fast during the initial cooling phase after turning off the power may cause the product to crack.

4. The distance between the product and the heating element (such as carbon tube, silicon molybdenum rod, or heating wire, etc.) should be >2cm.

5. The bottom of large crucibles should preferably not directly contact the bottom of the furnace. It is recommended to use alumina foot pads or other heat-resistant materials to lift the crucible, forming air convection to prolong the service life of the product.