AC9842 Alumina Crucible, Al2O3 Crucible Square, 95%, 150 mL

Alumina Crucible, Al2O3 Crucible Square, 95%, 150 mL Description

Alumina crucibles with a 95% composition consist primarily of Al₂O₃ and are manufactured to meet exact dimensions of 150 mL, ensuring compatibility with standard laboratory and industrial setups. The specified density of 3.7-3.9 g/cm³ supports both tensile (~32 Kpsi) and compressive (~300 Kpsi) strength, essential for enduring high thermal and mechanical loads. A thermal conductivity of 25 W/(m·K) promotes even heat distribution, and an operating temperature up to 1500 ℃ along with high volume resistivity (>10^14 Ohm·cm) extends their usability in extreme thermal environments.

Alumina Crucible, Al2O3 Crucible Square, 95%, 150 mL Applications

Industrial Processing
- Used as a crucible in high-temperature melting furnaces to achieve stable temperature profiles by leveraging its thermal conductivity and mechanical strength.
- Applied as a reaction vessel in ceramic sintering systems to minimise contamination while benefiting from its consistent material density and thermal stability.

Laboratory Research
- Employed as a container for high-temperature sample preparation to ensure uniform heat distribution by leveraging its controlled structural properties.
- Frequently used in analytical setups where precise thermal management is critical, capitalising on its resistance to thermal shock.

Product Comparison

Alumina Crucible, Al2O3 Crucible Square, 95%, 150 mL Packing

The crucible is individually secured in custom-moulded foam inserts within an anti-static bag and further boxed to minimise physical damage. The packaging ensures protection from moisture and particulate contamination during transit and storage. Recommended storage conditions include a dry, ambient temperature environment. Customised packaging solutions such as additional cushioning or compartmentalisation are available upon request to support specific handling protocols.

Frequently Asked Questions

Q1: How does the density of 3.7-3.9 g/cm³ influence the crucible's performance?
A1: The specified density supports balanced mechanical strength and thermal stability, minimising the risk of cracking under thermal shock. This characteristic ensures the crucible maintains its integrity during extended high-temperature operations.

Q2: What precautions are advisable when operating the crucible at high temperatures?
A2: It is important to operate below or at the maximum temperature of ≤1500 ℃ and to monitor thermal gradients. Careful control of heating and cooling cycles minimises thermal stress and potential microfractures.

Q3: In what way does a thermal conductivity of 25 W/(m·K) benefit thermal processes?
A3: A thermal conductivity of 25 W/(m·K) facilitates uniform heat transfer throughout the crucible, reducing the likelihood of localised overheating and ensuring consistent process outcomes in high-temperature applications.

Additional Information

Alumina (Al₂O₃) ceramics are fundamental in applications where high thermal resistance and mechanical stability are required. Their crystalline structure enables efficient heat transfer and durability under extreme thermal conditions. The sintering process and careful control of impurities significantly impact the performance and lifespan of these materials.

Understanding the microstructural attributes of alumina informs better material selection for processes involving rapid temperature changes and prolonged high-temperature exposure. Advances in material processing continue to enhance the performance and reliability of alumina-based ceramics across industrial and research applications.