Green SIC polishing powder

Green silicon carbide (SiC) polishing powder is a high-performance abrasive material widely used in precision surface finishing across various industries.

Core Characteristics & Manufacturing

1. Chemical Composition: Primarily silicon carbide (SiC) with ≥99% purity. The distinctive green color results from:

   • Ultra-low impurity content (especially iron, aluminum)

   • High crystalline perfection

   • Controlled stoichiometry of silicon and carbon

2. Physical Properties:

   • Hardness: 9.2-9.5 on Mohs scale (Knoop hardness ~2800 kg/mm²)

   • Melting Point: Decomposes at ~2700°C (does not melt)

   • Thermal Conductivity: 120 W/m·K (excellent heat dissipation)

   • Density: 3.2 g/cm³

3. Production Process:

   • Furnace Synthesis: Acheson resistance furnace (2200-2500°C)

   • Purification: Acid washing, magnetic separation, flotation

   • Micronization: Jet milling, ball milling, or sedimentation

   • Classification: Hydrocyclone separation, centrifugation

   • Quality Control: Laser particle sizing, SEM analysis

Key Technical Advantages

• Superior Micro-Hardness: Effectively processes hard materials

• Sharp Fracture Pattern: Maintains fresh cutting edges (self-sharpening)

• Controlled Particle Morphology: Blocky/angular shapes for aggressive cutting

• Chemical Inertness: Minimal workpiece contamination

• Narrow Particle Distribution: D90/D10 ratio typically <2.0 for premium grades

Primary Applications