Green Silicon Carbide for Sandblasting Computer Screens
Overview
Green silicon carbide (SiC) is an ultra-high-purity synthetic abrasive widely used for precision surface finishing of electronic display glass, particularly computer/device screens requiring controlled matte/textured finishes.
Key Properties
Chemical & Physical Characteristics:
Purity: >99% SiC (vs. ~95% for black SiC)
Hardness: 9.2-9.5 Mohs (second only to diamond/boron carbide)
Crystal structure: Sharp, friable hexagonal crystals
Thermal conductivity: High (dissipates heat effectively)
Chemical stability: Inert to acids/alkalis
Why Green SiC for Screen Finishing?
Advantages:
Superior Surface Quality – Produces uniform, fine matte finishes without compromising glass integrity
Zero Contamination Risk – No iron impurities (unlike black SiC) that could cause rust spots
Precision Control – Consistent particle geometry enables exact roughness specifications
High Efficiency – Sharp edges cut quickly with minimal subsurface damage
Cost-Effectiveness – Despite higher initial cost, provides better consistency and recyclability
Technical Specifications for Screen Applications
Typical Grit Sizes:
Fine finishing: #800 – #1500 (10-20μm)
Ultra-fine finishing: W20 – W7 (20-5μm)
Note: Finer grits = smoother tactile feel; coarser grits = stronger texture
