Insulating Spacers For Scientific Instruments 99.6% Al₂O₃ Material Ra Lt 0.1 Mu M Surface Roughness 320M

This series of alumina ceramic insulating spacers are manufactured from 99.6% high-purity Al₂O₃ material, featuring ultra-high volume resistivity (>10¹⁵Ω·cm) and dielectric strength (25kV/mm). With specialized surface treatment achieving Ra<0.1μm surface roughness, these components are specifically designed for electrical isolation requirements in high-voltage equipment, precision instruments, and semiconductor manufacturing devices.

Core Applications

• Power Electronics: IGBT module isolation, high-voltage power component insulation

• Semiconductor Equipment: Etcher RF matcher isolation, PECVD equipment insulating rings

• Medical Devices: MRI equipment insulation components, HF surgical instrument isolation

• Scientific Instruments: Particle accelerator insulating rings, high-energy physics experimental setups

• Industrial Automation: Servo motor insulating washers, robotic joint isolation

Performance Advantages

★ Superior Insulation: Withstands up to AC 30kV (1mm thickness)
★ High-Temperature Resistance: Continuous operation from -60℃ to 1200℃
★ Precision Dimensions: ID/OD tolerance ±0.01mm
★ Aging Resistance: <5% insulation degradation over 10 years
★ Multifunctional: Optional conductive/insulative zone design

Technical Specifications

Precision Manufacturing Process

1. Material Preparation: 0.5μm high-purity alumina powder

2. Forming Process:

   • Dry pressing (simple structures)

   • Injection molding (complex structures)

3. Sintering Process: 1650℃ hydrogen atmosphere sintering

4. Precision Machining:

   • CNC internal/external grinding (±0.005mm)

   • Double-end precision grinding

5. Surface Treatment:

   • Laser marking (0.02mm depth)

   • Antistatic coating (optional)

6. Quality Inspection:

   • 100% high-voltage insulation testing

   • Full-dimension CMM inspection

Installation Guidelines

⚠ Mounting Notes:

• Clean contact surfaces with alcohol before installation

• Recommended torque: M3 bolts 0.5N·m, M6 bolts 2.5N·m

• Avoid direct rigid connection with materials of different CTE

• Silver plating recommended for high-frequency applications

⚠ Maintenance Requirements:

• Check insulation resistance every 5,000 hours

• Replace immediately if surface carbonization is observed

• Storage humidity should be <60%RH

Service Commitment

• Technical Support: Free insulation system design consultation

• Testing Services: Third-party insulation performance reports available

• Emergency Response: 48-hour rapid replacement service

• Custom Development: Fast prototyping for non-standard sizes

FAQ

Q: Advantages over plastic insulating spacers?
A: 300℃ higher temperature resistance, 10x longer lifespan, no aging issues

Q: Maximum producible diameter?
A: Standard sizes Φ3-200mm, custom sizes available

Q: Radiation-resistant options?
A: Radiation-resistant models available (withstands 10⁶Gy dose)

Q: Surface metallization options?
A: Gold/silver/nickel plating choices available