AC10044 Alumina Ceramic Ring, Aluminium Oxide Ring, Al2O3 Ring 99%, Dia. 18 mm

Alumina Ceramic Ring, Aluminium Oxide Ring, Al2O3 Ring 99%, Dia. 18 mm Description

Alumina Ceramic Ring, Aluminium Oxide Ring, Al2O3 Ring 99%, Dia. 18 mm is manufactured from ≥99% Al2O3, ensuring uniform chemical composition and predictable performance. The 18 mm diameter ring exhibits a tensile strength of ~38 Kpsi and a compressive strength of ~300 Kpsi, making it suitable for load-bearing applications. Its thermal conductivity of 30 W/(m·K) and operating temperature up to 1600 ℃ support usage in thermal management systems, while the high electrical resistivity (>10^14 Ohm·cm) ensures effective insulation.

Alumina Ceramic Ring, Aluminium Oxide Ring, Al2O3 Ring 99%, Dia. 18 mm Applications

1.       Electronics
   - Used as an insulating washer in circuit assemblies to control leakage currents by leveraging its high volume resistivity.
   - Applied as a spacer in high-temperature devices to maintain structural integrity by utilising its consistent mechanical strength.

2.       Industrial
   - Employed as a thermal barrier component in heating systems to minimise heat transfer fluctuations by capitalising on its defined thermal conductivity.
   - Used in precision assembly fixtures where dimensional stability at elevated temperatures is required, preventing deformation during operation.

Alumina Ceramic Ring, Aluminium Oxide Ring, Al2O3 Ring 99%, Dia. 18 mm Packing

The ceramic rings are securely packaged in anti-static trays and cushioned with foam inserts to reduce mechanical shock and contamination. Each unit is sealed in moisture-resistant bags and housed within rigid, dust-proof boxes. These protective measures ensure that the rings remain free from physical damage and environmental contaminants during storage and transit. Customised packaging options are available to meet specific storage or handling requirements.

Frequently Asked Questions

Q1: How does the alumina composition affect the ring's performance at high temperatures?
A1: The high-purity Al2O3 composition ensures stability and minimal grain growth up to 1600 ℃, preserving mechanical and thermal properties while preventing degradation during prolonged high-temperature exposure.

Q2: What role do the tensile and compressive strengths play in application reliability?
A2: The tensile strength (~38 Kpsi) and compressive strength (~300 Kpsi) indicate the ring’s capability to resist varied mechanical loads, ensuring dimensional stability and mechanical integrity under operational stresses.

Q3: How does the high volume resistivity influence electrical applications?
A3: A volume resistivity of >10^14 Ohm·cm ensures effective electrical insulation, reducing leakage currents and enabling the ring to function reliably in circuits and devices where electrical isolation is critical.

Additional Information

Alumina ceramics, primarily composed of Al2O3, serve critical roles in environments that require chemical inertness and stability under extreme temperatures. The sintering process and controlled atmosphere during fabrication contribute to minimised porosity and uniform microstructure, which are essential for achieving predictable mechanical and electrical properties.

In various industrial and electronic systems, these ceramic rings offer an alternative to polymer-based insulators due to their superior thermal tolerance and inert characteristics. Understanding the correlation between microstructural control and macroscopic properties supports better material selection and engineering design in high-tech applications.