Product Name

Spherical Non-Porous Alumina Ceramic

Product Overview

Spherical non-porous alumina ceramics are high-density, pore-free specialty ceramic materials made from ultra-high-purity aluminum oxide (Al₂O₃, purity ≥99.5%). Manufactured through advanced forming and sintering techniques such as Hot Isostatic Pressing (HIP) or precision injection molding, these ceramics feature a spherical surface geometry and exhibit excellent mechanical strength, wear resistance, insulation, and chemical stability. They are widely used in precision machinery, electronic packaging, and medical devices.

Key Properties

Core Features

1. Pore-Free Structure

Achieves near-theoretical density (<0.1% porosity) via HIP sintering or precision molding, preventing fluid penetration and contamination — essential for cleanroom and high-purity applications.

2. Spherical Surface Design

The spherical geometry minimizes contact stress, enhances sealing, and improves wear performance — ideal for high-precision applications like valves and bearings.

3. Superior Overall Performance

• High Hardness: Second only to SiC and diamond; resists abrasive particles.

• Excellent Corrosion Resistance: Withstands strong acids (except hydrofluoric acid), alkalis, and organic solvents.

• High Insulation: Low dielectric loss under high frequencies — perfect for RF and power electronics.

Typical Applications

(1) Precision Machinery

• Spherical Bearings: Suitable for high-speed, corrosion-prone environments such as chemical pumps.

• Sealing Rings: Leak-free sealing in semiconductor equipment.

(2) Electronics Industry

• Insulating Substrates: For thermal management and insulation in power electronics.

• RF Windows: Transparent ceramic domes for microwave and radar applications.

(3) Medical Devices

• Artificial Joint Ball Heads: Biocompatible and wear-resistant for long service life.

• Dental Implants: High-precision occlusal surface reconstruction.

(4) Energy & Chemical Industry

• Valve Balls: Excellent for corrosive fluid control systems.

• Sensor Protection Housings: Protects devices under high temperature and pressure conditions.