Silicon Nitride Ceramic Bowl-Shaped Component For Corrosion And Wear Resistance

Product Specification

Silicon Nitride Ceramic Bowl-Shaped Component For Corrosion And Wear Resistance In Fluid Control

Product Description
This product is a high-performance bowl-shaped structural component precision-manufactured from silicon nitride (Si₃N₄) ceramic material. It exhibits the inherent dark gray-black color of silicon nitride ceramic with a smooth and refined surface texture. The inner wall features precisely engineered concentric circular patterns and annular grooves, while a through-hole is positioned at the center of the base. This design combines functional excellence with aesthetic appeal. The component fully utilizes the exceptional hardness, outstanding wear resistance, superior thermal stability, and excellent corrosion resistance of silicon nitride ceramic, making it a premium industrial element specifically developed for extreme operating conditions involving high wear, elevated temperatures, and strong corrosion.

Primary Applications
Thanks to its unique combination of properties, this component serves as an ideal solution for various precision industrial applications:

• Precision Wear-Resistant Components: Functions as wear-resistant bushings, bearing seats, or sliding parts in mechanical equipment, particularly in harsh environments with particulate matter or without lubrication.

• Fluid Control Components: Serves as ceramic valve seats, metering chambers, or distributor parts in chemical pumps and valves, ensuring long-term sealing performance and flow stability through corrosion and wear resistance.

• High-Temperature Load-Bearing Components: Used as boats, supports, or insulating sheaths in semiconductor diffusion furnaces and heat treatment equipment, capable of long-term stable operation at temperatures exceeding 1200°C.

• Special Process Components: Suitable for specialized applications such as nozzles in laser cutting machines and components in contact with non-ferrous metal melting.

Key Advantages

• Exceptional Hardness and Wear Resistance: Extreme hardness (HRA ≥92) provides a service life significantly longer than metal materials, substantially reducing equipment maintenance frequency and costs.

• Superior Thermal Stability and Thermal Shock Resistance: Low thermal expansion coefficient and good thermal conductivity enable it to withstand severe thermal cycling without cracking, maintaining dimensional stability at high temperatures.

• Excellent Chemical Corrosion Resistance: Resists corrosion from most acids, alkalis, and molten non-ferrous metals, making it suitable for diverse environments.

• High Strength and Good Toughness: High flexural strength and outstanding fracture toughness among advanced ceramics ensure good resistance to mechanical shock.

• Lightweight and Self-Lubricating: Low density allows for lightweight designs, while a low friction coefficient ensures smoother operation.

Specifications Table

Manufacturing Process
Raw material preparation (High-purity Si₃N₄ powder & additives) → Uniform mixing → Forming (Pressing/Isostatic Pressing/Injection Molding) → Green body machining (Preliminary shaping) → High-temperature sintering (Reaction Sintering or Gas Pressure Sintering) → Precision diamond grinding (Inner hole, outer diameter, end face) → CNC grinding (Grooves, patterns) → Polishing → Comprehensive quality inspection → Packaging.

Usage Instructions

1. Careful Installation: Ensure proper alignment during installation and apply force evenly. Avoid direct impact on the ceramic component with metal tools to prevent brittle fracture. The use of nylon or copper gaskets and tools is recommended.

2. Consider Fit and Clearance: When assembling with metal parts, account for differences in thermal expansion coefficients and allow appropriate clearance at operating temperatures.

3. Avoid Localized Stress: Ensure uniform support to prevent stress concentration due to structural design or improper installation.

After-Sales Service
We provide a 12-month product quality warranty, supported by professional technical assistance and custom services. Non-standard customization is available based on customer drawings or requirements to ensure the product meets specific application needs.

Frequently Asked Questions (FAQ)

• Q: What are the advantages of silicon nitride ceramic bowl-shaped components compared to zirconia ceramic?

  • A: The main advantages are higher service temperature and superior thermal shock resistance. Silicon nitride maintains better strength retention and thermal stability at high temperatures, making it more suitable for harsh environments with significant temperature fluctuations. Zirconia generally offers higher toughness at room temperature.

• Q: What is the function of the concentric circular patterns and grooves on the inner wall?

  • A: These features are typically functional. For example, they can improve fluid flow dynamics, enhance surface lubricant retention, serve as sealing surfaces, or facilitate positioning and securing during assembly.

• Q: What level of pressure can this component withstand?

  • A: Pressure resistance depends on specific dimensions, wall thickness, and structural design. Please provide detailed application parameters and drawings for our engineers to conduct mechanical analysis.