Unveiling Semiconductor Ceramics: Extreme Purity, Heat Resistance & Superior Performance!

Advanced Ceramic Components for Semiconductor Equipment: Industrialization Requirements and Material Profiles

The industrialization of advanced ceramic components in the semiconductor sector must meet stringent requirements across three critical dimensions due to their pivotal roles and positions within semiconductor equipment:

• Performance of Advanced Ceramic Materials: Must fulfill comprehensive demands for mechanical, thermal, dielectric, chemical resistance (to acids, alkalis), and plasma corrosion resistance.

• Precision Machining of Hard, Brittle, and Difficult-to-Machine Materials: Advanced Ceramics Are hard and brittle, posing significant machining challenges. The high-precision requirements of semiconductor equipment make machining a persistent bottleneck in the application of ceramic components.

• Surface Treatment of Machined New Products: As ceramic components in semiconductor equipment are often in close proximity to wafers, with some even making direct contact, stringent control over surface metal ions and particulate contamination is essential. Thus, post-machining surface treatment is a key technology for their successful deployment.

Semiconductor ceramics include alumina (Al₂O₃), Silicon Nitride (Si₃N₄), aluminum nitride (AlN), silicon carbide (SiC), among others. Precision ceramic components account for approximately 16% of the value within semiconductor equipment. A variety of advanced ceramic materials are used, each possessing unique properties and suitable application areas. Below are common advanced ceramic materials along with their characteristics and typical application fields:

1. Alumina (Al₂O₃)

• Characteristics:

  • High hardness and excellent wear resistance.

  • Good electrical insulation properties.

  • High-temperature resistance (melting point ~2050°C).

  • Good chemical stability and corrosion resistance.

• Application Fields:

  • Wafer boats (Wafer Boats).

  • Insulating components.

  • Chemical Mechanical Polishing (CMP) pads, substrate packages.

2. Aluminum Nitride (AlN)

• Characteristics:

  • High thermal conductivity (approximately 170-200 W/m·K).

  • Low coefficient of thermal expansion (close to that of silicon).

  • Good electrical insulation properties.

  • High-temperature resistance and thermal shock resistance.

• Application Fields:

  • Semiconductor package substrates.

  • Heat sinks and thermal spreaders.

  • High-power electronic devices.

  • Heaters in thin-film deposition equipment.

3. Silicon Carbide (SiC)

• Characteristics:

  • Extreme hardness (Mohs hardness 9.2).

  • Excellent high-temperature performance (melting point ~2700°C).

  • High thermal conductivity (approximately 120-200 W/m·K).

  • Corrosion and wear resistance.

• Application Fields:

  • Components in etching equipment.

  • High-temperature heaters.

  • Semiconductor wafer boats.

  • Substrates for high-power electronic devices.

  • Wafer stages, guides, reflector mirrors, and ceramic chucks in lithography machines.

4. Silicon Nitride (Si₃N₄)

• Characteristics:

  • High strength and high toughness.

  • High-temperature resistance (melting point ~1900°C).

  • Good thermal shock resistance.

  • Corrosion and wear resistance.

• Application Fields:

  • High-temperature structural components.

  • Carriers in semiconductor manufacturing equipment.

  • Thermal management materials.

  • High-reliability packaging materials.

5. Boron Nitride (BN)

• Characteristics:

  • High thermal conductivity (approximately 60 W/m·K).

  • Low dielectric constant.

  • Good lubricity.

  • High-temperature resistance and thermal shock resistance.

• Application Fields:

  • High-temperature insulating materials.

  • Lubricating components in semiconductor equipment.

  • Thermal management materials