Alumina Insulation Ring

Material Characteristics of Alumina Insulation Ring

The Alumina Insulation Ring is renowned for its outstanding refractory properties, making it an ideal choice for high-temperature applications. It maintains its structural integrity in both oxidizing and reducing atmospheres up to 1650°C (2900°F) and can withstand vacuum environments up to 2000°C (3600°F). At 1000°C, it retains 50% of its tensile strength compared to room temperature, a testament to its robustness. Unlike metals, which tend to weaken at elevated temperatures, alumina ceramics preserve their strength and revert to their original state once temperatures normalize.

High Purity and Hardness

With a purity level of 99.99%, the Alumina Insulation Ring achieves a hardness rating of 9 on the Mohs scale, just below that of diamonds. This high degree of hardness ensures exceptional wear resistance, making it suitable for applications where durability is paramount. The material’s purity also contributes to its excellent performance in demanding environments, where contamination must be minimized.

Superior Electrical Insulation

The Alumina Insulation Ring is an excellent electrical insulator, with electrical resistivity reaching up to 10^14 Ohm·cm. Its primary function is to inhibit the flow of electrons, and it can withstand extreme exposure to electrical charges without any dielectric loss. This makes it an ideal material for applications requiring high voltage insulation and reliable electrical performance.

High Surface Finish and Mechanical Strength

The Alumina Insulation Ring boasts a highly polished surface, achieving a finish of up to Rz0.8 (Ra0.1). This smooth surface finish is crucial for applications requiring minimal friction and high precision. Additionally, the material exhibits superior mechanical strength, with a maximum fracture toughness of 10 MPa·m^1/2 and compressive strength reaching up to 2300 MPa. These properties ensure that the ring can withstand significant mechanical stresses without failure.

Applications of Alumina Insulation Ring

Sealing Components in Fluid Handling

Due to its low friction coefficient and high load-bearing capacity, the Alumina Insulation Ring is widely used as a sealing component in pumps, valves, and other fluid-handling equipment. Its ability to prevent leakage and ensure efficient operation makes it indispensable in industries where fluid control is critical.

Electrical Insulation

The Alumina Insulation Ring is employed as an insulator in various electrical components, including high voltage insulators, spark plugs, and electrical connectors. Its excellent electrical insulation properties ensure reliable performance in applications where preventing electrical conduction is essential.

Thermal Applications

Thanks to its excellent thermal conductivity and resistance to high temperatures, the Alumina Insulation Ring is used in heating elements and furnace components. Its ability to withstand extreme temperatures without degradation makes it ideal for use in high-temperature processing environments.

Semiconductor and Photolithography

In the semiconductor industry, the Alumina Insulation Ring is used for manufacturing parts for chemical vapor deposition (CVD), ion implants, and photolithography. Its high purity and resistance to chemical attack make it suitable for these precision applications, where contamination must be avoided.

Chemical Industry

The Alumina Insulation Ring is also utilized in the chemical industry due to its high corrosion resistance. It can withstand harsh chemical environments, making it an ideal material for components exposed to corrosive substances.