High-Performance Silicon Nitride Ceramics Exceptional Thermal Shock Resistance And High Strength

Product Overview

This product is a Silicon Nitride Ceramic Disc manufactured from high-purity raw materials using advanced ceramic processes. The disc features a pure black color and a meticulously polished surface that is smooth and fine to the touch, demonstrating the material's exceptional density and homogeneity. Silicon Nitride is a high-performance engineering ceramic renowned for its high strength, high toughness, exceptional thermal shock resistance, and outstanding wear resistance. Its unique design, combining a solid, unperforated plate with fully rounded edges, effectively eliminates stress concentration points, ensuring reliability and safety in demanding applications.

Key Features & Advantages

• High Hardness & Wear Resistance: Offers superior hardness and excellent wear resistance, significantly outperforming metals and other ceramics in service life, thereby reducing maintenance frequency.

• Exceptional Thermal Shock Resistance: Capable of withstanding extremely rapid heating and cooling cycles without cracking, making it ideal for environments with severe thermal cycling.

• High Strength & Fracture Toughness: Boasts one of the highest fracture toughness values among advanced ceramics, effectively resisting impact and bending stresses to prevent brittle fracture.

• Excellent Electrical Insulation: Maintains stable insulation properties even under high temperatures and high frequencies, ensuring operational safety of equipment.

• Superior Chemical Stability: Resistant to corrosion from most acids, alkalis, and molten metals, suitable for complex chemical environments.

Typical Applications

• Precision Instrumentation & Metrology: Used as high-precision gaskets, reference platforms, and insulated substrates for sensors.

• Semiconductor Manufacturing: Serves as a base material for electrostatic chucks (ESCs), insulating fixtures, and carrier plates in semiconductor processes.

• Optics & Laser Technology: Functions as a highly stable mirror substrate, laser window, or optical platform support component.

• Industrial High-Temperature Applications: Employed as setter plates, insulating spacers, and load-bearing platforms in high-temperature furnaces and heat treatment equipment.

Specification Table

Manufacturing Process

High-Purity Si₃N₄ Powder Formulation → Additive Mixing & Ball Milling → Spray Drying → Dry Pressing / Cold Isostatic Pressing (CIP) → Gas Pressure Sintering → Stress-Free Surface Grinding → Precision Polishing → Radius Edge Profiling → 100% Non-Destructive Testing → Cleaning & Packaging.

Usage Instructions

1. Handling & Storage: It is recommended to wear gloves during handling to avoid contamination of the polished surface from skin oils. Store in a clean environment.

2. Installation: When used as a gasket or insulator, ensure the mating surfaces are clean and flat. Apply clamping force evenly to avoid point loads.

3. Environmental Compatibility: Although corrosion-resistant, prolonged exposure to hydrofluoric acid or hot, concentrated alkaline solutions should be avoided.

Service & Support

We provide a 12-month product quality warranty. Our team of application engineers is available to offer selection guidance, technical consultation, and customized solutions to ensure optimal performance in your specific application.

Frequently Asked Questions (FAQ)

Q1: What is the main difference between a Silicon Nitride disc and a Zirconia disc?
A1: The key differences lie in thermal shock resistance and high-temperature performance. Silicon Nitride's thermal shock resistance is far superior to Zirconia, making it much safer and more reliable under rapid temperature changes. Additionally, Silicon Nitride retains significantly higher strength and creep resistance above 800°C.

Q2: What level of flatness and parallelism can be achieved for the disc?
A2: Through our precision grinding and polishing processes, we can achieve a flatness of <1μm. Parallelism can be strictly controlled according to customer requirements to meet high-precision application needs.

Q3: Can the diameter and thickness of the disc be customized?
A3: Yes. We support non-standard customization. We can manufacture Silicon Nitride discs to your specific diameter, thickness, and surface finish requirements based on provided drawings or technical specifications.