AC9846 Alumina Crucible, Al2O3 Crucible Square, 95%, 720 mL

Alumina Crucible, Al2O3 Crucible Square, 95%, 720 mL Description

Al₂O₃ crucibles are manufactured to serve as containers for high-temperature processes in both research and industrial settings. The 720 mL capacity ensures compatibility with medium-volume processing equipment. With a tensile strength of ~32 Kpsi and a compressive strength of ~300 Kpsi, the crucible maintains its form under cyclic thermal stresses. Its thermal conductivity of 25 W/(m·K) supports controlled heat distribution, while a high volume resistivity (>10^14 Ohm·cm) promises effective electrical insulation during experiments.

Alumina Crucible, Al2O3 Crucible Square, 95%, 720 mL Applications

Industrial Processing
- Used as a reaction vessel in high-temperature metal melting systems to achieve controlled thermal conditions by leveraging its sintered alumina microstructure.
- Applied in chemical processing to contain corrosive reactions, ensuring minimal material interaction by exploiting its inert surface properties.

Laboratory R&D
- Serves as a crucible in thermal analysis apparatus to mitigate sample contamination through its electrically insulating characteristics.
- Frequently used in material synthesis experiments to provide uniform heat distribution, addressing precision heating requirements by capitalising on its controlled porosity and density.

Product Comparison

Alumina Crucible, Al2O3 Crucible Square, 95%, 720 mL Packing

The crucible is packaged in foam-lined containers with an inner anti-static wrap to prevent mechanical damage and contamination. Units are sealed in moisture-barrier bags and stored in temperature-controlled environments to preserve thermal and structural properties. Custom packaging solutions, including compartmentalisation and reinforced outer cartons, are available upon request to further protect the product during transit and storage.

Frequently Asked Questions

Q1: How does the sintering process affect the mechanical strength of the crucible?
A1: The controlled sintering process aligns alumina grains to produce a uniform microstructure, which enhances tensile and compressive strength. This approach minimises internal stresses and ensures the crucible maintains dimensional stability during rapid thermal cycles.

Q2: What inspection methods are employed to verify alumina purity?
A2: SAM utilises techniques such as X-ray fluorescence (XRF) and scanning electron microscopy (SEM) for quantitative compositional analysis. These methods help detect impurities and ensure the alumina maintains the specified 95% purity, which is crucial for high-temperature applications.

Q3: How does the design of the crucible mitigate thermal shock?
A3: Its square geometry promotes uniform heat distribution, reducing thermal gradients during rapid temperature changes. Controlled microstructural characteristics achieved through the sintering process further contribute to minimising thermal shock and preventing crack propagation.

Additional Information

Alumina (Al₂O₃) is widely used in high-temperature applications due to its excellent resistance to thermal shock and chemical inertness. Its properties are governed by the controlled sintering process, which ensures a consistent microstructure necessary for maintaining physical and electrical properties under extreme conditions.

The material's thermal conductivity and high resistivity make it a fundamental component in processes where precise thermal management and electrical isolation are required. Understanding the relationship between microstructure and performance enables engineers to select appropriate ceramic materials for rigorous industrial and research environments.