SiC Abrasive for Polishing: Precision Engineered for Flawless Surfaces

Why SiC Outperforms Traditional Polishing Abrasives

Green Silicon Carbide (SiC) isn’t just another abrasive—it’s a material science breakthrough for high-precision polishing. Unlike alumina or diamond:

• Nanoscale Cutting Edges: Hexagonal α-SiC crystals fracture predictably, maintaining razor-sharp edges 5x longer than alumina.

• Thermal Harmony: 120-270 W/m·K conductivity prevents heat-induced subsurface damage in sensitive materials.

• Chemical Inertness: Zero iron contamination (Fe₂O₃≤0.08%) ensures pristine surfaces for semiconductors and optics.

Key Applications & Performance Data

1. Semiconductor Wafer Polishing (CMP)

• Problem: Diamond abrasives leave carbon residues on 3nm nodes.

• SiC Solution: F2000-grade slurry (D50=3μm) achieves:

  • Ra ≤0.07μm surface finish

  • Zero contamination on silicon/SiC wafers

  • 18% higher yield vs. diamond (TSMC case verified)

2. Optical Component Finishing

• Lenses & Mirrors: F3000 SiC (D50=0.8μm) eliminates subsurface damage in sapphire/zirconia:

  • Light transmission ↑ 5%

  • Scratch counts ↓ 68% (SCHOTT optical lab data)

3. Medical Implant Superfinishing

• Titanium/CoCr Alloys: pH-neutral SiC suspensions:

  • Achieve Ra 0.05μm (implant-grade smoothness)

  • Pass ISO 10993 biocompatibility with zero ion leaching

3 Technical Advantages That Define Our SiC

1. Precision-Controlled Particle Morphology

• Angular Grain Design: Engineered 85-110° edge angles for aggressive yet controlled material removal.

• Air Classification: Laser-verified D99<7.2μm eliminates oversized particles causing scratches.

2. Surface Chemistry Mastery

• Zeta Potential Optimization: -45mV charge in slurries prevents agglomeration during 72-hour continuous runs.

• Silane Functionalization: Optional amino/vinyl coatings boost resin bonding in polishing pads.

3. Sustainable High-Performance

• Recyclable Slurries: 7+ usage cycles vs. 3 cycles for diamond.

• Low-Carbon Production: 40% less CO₂/kg than industry average (SGS-verified).

Industry-Proven Success Stories

Case 1: Top-3 EUV Lithography Mirror Supplier

• Challenge: 0.12μm Ra limit missed with alumina abrasives.

• Solution: F4000 SiC slurry + tribochemical protocol.

• Result: 0.048μm Ra with 99.7% reflectivity.

Case 2: EV Battery Copper Electrode Polishing

• Pain Point: Voids from diamond embedding reduced conductivity.

• Fix: Non-embedding SiC F1500 fluid.

• Data: ↑ 8% energy density, ↓ $2.1M/yr scrap costs.

Why Global Leaders Trust YUMO’s SiC?

• Bespoke Formulations: Adjust particle distribution, pH, viscosity for your material.

• On-Demand Testing: Send samples for free polishing validation in our ISO 17025 lab.

• Crisis-Ready Supply: Houston/Rotterdam hubs guarantee 72-hour emergency delivery.

Packaging & Shipping

We can provide 1MT/25Kg woven plastic bags and 25Kg paper bags. And ton bag packaging.

All of our abrasive products are carefully processed during storage and transportation to maintain their quality in their original state.