Green silicon carbide (SiC) grit is a high-purity abrasive material known for its exceptional hardness (9.5 on the Mohs scale), sharpness, and thermal conductivity. It is widely used in various industrial, manufacturing, and precision applications due to its superior cutting ability compared to black silicon carbide. Here are the key applications of green silicon carbide grit:
1. Precision Grinding & Lapping
Optical Lenses & Glass: Used for fine grinding and polishing of optical lenses, mirrors, and precision glass components due to its minimal contamination risk.
Semiconductor Wafers: Applied in lapping and polishing silicon wafers and other semiconductor materials.
Ceramics & Hard Alloys: Ideal for grinding advanced ceramics (e.g., alumina, zirconia) and cemented carbides.
2. Abrasive Blasting & Surface Preparation
Micro-abrasive Blasting: Used in delicate surface treatments for cleaning and etching glass, stone, and metals without deep scratching.
Deburring & Finishing: Effective for removing burrs from precision metal parts.
3. Cutting & Slicing Applications
Wire Sawing: Mixed with slurry for cutting hard and brittle materials like sapphire, silicon, and quartz.
Dicing Blades: Used in manufacturing thin blades for cutting semiconductors and ceramics.
4. Polishing & Superfinishing
Jewelry & Gemstone Polishing: Preferred for finishing precious stones (diamond, ruby) due to its sharpness.
Metallographic Sample Prep: Used in labs for fine polishing of metal samples for microscopic analysis.
5. Refractory & Coating Additives
High-Temperature Ceramics: Added to refractory materials to enhance thermal shock resistance.
Anti-Slip Coatings: Incorporated into paints and coatings for improved abrasion resistance.
6. Advanced Industrial Applications
Aerospace Components: Used in grinding turbine blades and other high-strength alloys.
Electronics Industry: Critical in manufacturing LED substrates and silicon carbide (SiC) power devices.
Advantages Over Black Silicon Carbide:
Higher purity (≥99% SiC) for finer finishes.
Sharper grains for precision work.
Better thermal and chemical stability.
Grit Sizes & Selection:
Coarse (F12-F80): Rough grinding, cutting.
Medium (F100-F220): General-purpose grinding.
Fine (F230-F1200): Polishing, lapping.
Ultra-fine (F1500+): Mirror finishes.
