AC10371 Alumina Bar Al2O3 Bar 99%

Alumina Bar 99% Description

Alumina Bar 99% is fabricated from Al2O3 with a purity level of 99% and is supplied as a bar with customisable dimensions. It exhibits a density of 3.85 g/cm³, a tensile strength of approximately 262 MPa, and a compressive strength of around 2 068 MPa. The bar’s thermal conductivity of 30 W/(m·K) and an operating temperature up to 1 600 ℃ ensure efficient heat dissipation. Its volume resistivity exceeding 10^14 Ohm·cm provides excellent electrical insulation.

Alumina Bar 99% Applications

Electronics Applications
- Used as a structural component in high-temperature furnace assemblies to achieve controlled thermal profiles by leveraging its thermal conductivity and high operating temperature.
- Applied in insulating parts of electronic devices to mitigate electrical leakage through its excellent volume resistivity.

Industrial Applications
- Serves as a refractory component in processing equipment to maintain mechanical stability under load by leveraging its high compressive strength.
- Utilised in wear-resistant parts where the chemical inertness and tailored dimensions ensure prolonged service life.

Medical and Bioceramic Devices
- Employed as a structural element in bioceramic implants to avoid adverse reactions by capitalising on its chemical inertness and high purity.

Alumina Bar 99% Packing

Alumina Bar 99% is packaged in custom-moulded protective containers lined with anti-scratch foam to prevent surface damage during transit. The package is sealed to minimise dust and moisture exposure. Storage should be in a low-humidity, temperature-controlled environment to preserve material properties. Options for custom packaging, including additional cushioning and labelling, are available upon request.

Frequently Asked Questions

Q1: What machining practices are recommended for Alumina Bar 99%?
A1: Machining requires diamond-coated tools and controlled coolant application to manage heat. The material’s hardness and brittleness demand slow cutting speeds and intermittent processes to minimise micro-cracking.

Q2: How should Alumina Bar 99% be handled in high-temperature applications?
A2: It is important to pre-assess thermal gradients and ensure uniform heating to avoid thermal shock. Proper fixture design and controlled temperature ramping assist in maintaining the integrity of the bar during operation.

Q3: Can the dimensions of Alumina Bar 99% be customised to specific requirements?
A3: Yes, the dimensions can be customised according to precise customer specifications. Detailed drawings and tolerances should be provided to ensure the final product meets necessary engineering requirements.

Additional Information

Alumina is a widely used ceramic material in industries requiring high resistance to heat and chemical attack. Its use in technical components is supported by extensive research and a deep understanding of ceramic processing and sintering behaviour. Advanced characterisation techniques, such as scanning electron microscopy and X-ray diffraction, help in optimising its microstructure.

In the broader context of ceramic materials, alumina exhibits a balance between mechanical strength and thermal conductivity that is critical in industrial applications. The understanding of phase stability and grain boundary effects further contributes to its performance in environments that demand enduring structural integrity and efficient heat management.