Oxidation Resistance Silicon Nitride Machining Si₃N₄ Silicon Carbide Nitride

Product Specification

Oxidation Resistance Silicon Nitride Machining Si₃N₄ Silicon Carbide Nitride Customized

Product Introduction

This product is a precision disc-shaped component manufactured from high-performance Silicon Nitride Ceramic. It features a deep black color and a surface that is meticulously polished to be smooth and fine, exhibiting the characteristic high gloss and rigid texture of advanced ceramics. The design adopts a flat disc structure with slightly thicker edges and a thinner center, ensuring excellent flatness and structural stability. The silicon nitride material endows it with comprehensive properties that surpass traditional metals and alumina ceramics, making it an ideal choice for high-end industrial applications.

Core Advantages

• Exceptional Wear Resistance: High hardness ensures an extremely long service life, effectively withstanding frequent friction.

• Excellent High-Temperature Stability: Maintains dimensional stability and performance at elevated temperatures, with good thermal shock resistance.

• High Hardness & Strength: Possesses very high mechanical strength and rigidity, capable of withstanding high loads.

• Good Electrical Insulation: An excellent insulating material, suitable for high-voltage or high-frequency electronic environments.

• Lightweight: Lower density than metals like steel, contributing to lightweight equipment design.

• Chemical Inertia: Resists corrosion from most acids and alkalis, suitable for harsh chemical environments.

Primary Applications

This versatile ceramic disc is widely used in various industrial fields:

• Semiconductor Industry: Used as insulating spacers, carrier plates, or vacuum chucks in wafer processing.

• Precision Measurement & Instruments: Serves as reference flat surfaces for measurement platforms, instrument panels, or vibration isolation elements for optical platforms.

• Automation Equipment: Used for non-magnetic, wear-resistant spacers, shim rings, or guide plates.

• High-Temperature Applications: Functions as furnace spacers, heating fixture plates, or heat treatment carrier discs.

• Chemical & New Energy: Used for corrosion-resistant sealing rings or insulating components in battery production.

Specifications Table

Manufacturing Process

Silicon Nitride Powder Preparation → Additive Mixing → Spray Drying → Dry Pressing / Cold Isostatic Pressing → CNC Machining (Green State) → Gas Pressure Sintering / Pressureless Sintering → Precision Surface Grinding & Double-Side Polishing → Non-Destructive Testing → Full Dimensional Precision Inspection → Cleaning & Packaging.

Usage Instructions

1. Handling & Installation: Handle with clean gloves to avoid surface contamination from fingerprints. Ensure contact surfaces are clean and free of debris during installation.

2. Fastening & Load: If fastening is required, ensure force is applied evenly. Avoid point impact or localized over-stress to prevent micro-cracks in the brittle material.

3. Environmental Compatibility: Although silicon nitride is corrosion-resistant, verify its chemical compatibility before use in extreme chemical environments.

4. Cleaning & Maintenance: Clean using ultrasonics or with neutral detergents and soft cloths post-use. Avoid scratching the surface with hard objects.

After-Sales Service

We provide: 12-month product quality warranty; Lifetime free technical consultation; Acceptance of small-batch and large-scale customization with professional technical support.

FAQ

• Q: Why choose Silicon Nitride over Alumina for this disc?
  A: Silicon Nitride significantly surpasses Alumina in toughness, thermal shock resistance, and high-temperature strength, making it more suitable for applications with rapid temperature changes, mechanical shock, or requiring higher structural reliability.

• Q: What flatness can be achieved for this ceramic disc?
  A: We can perform high-precision grinding according to your needs. Standard flatness is ≤5µm, with higher precision (e.g., ≤1µm) available as a custom option.

• Q: Can secondary machining like drilling or grooving be performed on the product?
  A: Yes. We support CNC precision machining of the sintered product, such as drilling, grooving, and edge grinding, to meet your specific assembly requirements.