Zinc Oxide Ceramic Varistor Additive
CAS Number: 1314-13-2
Featured inZinc Oxide Grades
High-purity zinc oxide (ZnO) is the primary component (~95 mol%) in ZnO varistor ceramics, which are critical for electrical surge protection devices. Small additions of Bi2O3, MnO2, CoO, and Sb2O3 doped into ZnO create grain boundary potential barriers responsible for the non-linear current-voltage characteristics. ZnO is also used as a flux in ceramic glazes and as a piezoelectric component.
Technical Specifications
| appearance | White fine powder |
| purity (%) | ≥99.7 |
| ZnO content (%) | ≥99.7 |
| D50 particle size (µm) | 0.3–1.0 |
| specific surface area (m²/g) | 3–8 |
Applications
- Primary component in ZnO varistor surge protection ceramics
- Flux and opacifier in ceramic glaze formulations
- Piezoelectric ceramic component in sensor applications
- Antibacterial additive in functional ceramic coatings
- Luminescent ceramic component for phosphor applications
Key Features
- High purity critical for reproducible varistor electrical characteristics
- Fine, uniform particle size ensures homogeneous dopant distribution
- Dual role as glaze flux and opacifier in traditional ceramics
- Excellent UV stability and photoactivity in functional ceramic coatings
Send Inquiry
CAS Number
1314-13-2
Category
Ceramic / Glass AdditivesAvailability
In StockSample
Dispatched within 5 days
More in Ceramic / Glass Additives
Acrylic Ceramic Binder (PAA)
9003-01-4
Alumina Fiber Ceramic Composite Reinforcement
1344-28-1
Ammonium Polyacrylate Ceramic Deflocculant
9003-04-7
Ammonium Polymethacrylate Ceramic Deflocculant (Darvan Type)
Barium Carbonate for BaTiO3 Ceramics
513-77-9
Bismuth Oxide Ceramic Flux and Dopant
1304-76-3
Borosilicate Glass Frit for Ceramics
65997-17-3
Calcined Kaolin (Metakaolin) Ceramic Filler
1332-58-7