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Polycrystalline Alumina
A pioneer in the development of seeded gel abrasives, Saint-Gobain offers high-performance polycrystalline alumina particles for a variety of polishing applications.
Our groundbreaking technology produces a grain with a unique nano-structure composed of extremely uniform, sub-micron crystals. Under stress, the nano-structured crystal network allows micro-fracturing, continually exposing new cutting edges that keep the particle sharper than conventional abrasives for longer-lasting abrasive performance.
Saint-Gobain will recommend the best-performing particle for your application or work side-by-side with you to develop a positive interaction in your formulations. We offer polycrystalline alumina particles in aqueous form with a pH from basic to acidic, particle sizes from 100nm to 2um, and solids loadings from 20% to 45%.
9246 Polycrystalline Alumina
Saint-Gobain’s 9246 is an alpha alumina particle with fundamental crystal size ranging from 50 to 100 nanometers in aqueous form. The unique composition of extremely small and high agglomerated strength crystals offers cost-effective polishing with a high-quality surface finish on most materials.
Applications
9293 Nano Polycrystalline Alumina
Saint-Gobain’s third-generation polycrystalline alumina polishing particles are well-dispersed, high-purity seeded gel alumina with fundamental crystal size less than 75 nanometers. A cost-effective abrasive slurry for rapid polishing in sensitive electronics applications, 9293’s nano-sized alpha alumina crystals feature higher purity and superior dispersion over previous generations.
Utilizing the latest particle processing technology, large particle counts are controlled to significantly lower defectivity rates on polished surfaces.
Applications
7992 Nano Polycrystalline Alumina
Saint-Gobain’s fourth-generation polycrystalline alumina particle utilizes proprietary processing knowledge to produce a nano-scale alpha alumina particle with spherical shape. This value-added product is manufactured via our patented polycrystalline alumina processing technology and results in fine spheres with a crystal size of 150 to 250 nanometers.
The tightly sized particle distribution minimizes both fine and coarse particles, making this an excellent choice for low-defect, high-precision polishing applications. Offered in either basic or acidic aqueous suspensions for the ultimate in dispersion, 7992 is also offered in dry powder form.
Applications
- Glass
- Plastic
- Ferrous metals
- Noble metals
- High-purity alpha Al2O3 slurries
- Readily available in commercial quantities
- Provides fast material removal rate and controlled surface finish
- Compatible with most water/oil based compound chemistries
- Does not re-crystallize like colloidal silica
- Tightly controlled particle size distribution and oversized particles
- ISO 14001 certified
- State-of-the-art quality control to assure consistent performance
- Ability to customize products for specialized applications
- Easy to clean with commercially available alkaline cleaners
- Knowledgeable application engineers available for technical support
- Particles have complete traceability back to raw materials
| Characteristics | 9293 | 7992 | 9246 |
|---|---|---|---|
| Particle Size (µm) | 0.1 | 0.19 | 0.5-2.0 |
| pH | 3.5-4.3 | 3.5-4.5 | 7.0 - 8.5 |
| % solids | 20 | 20 | 30 - 45 |
| Al2O3 content (%) | 99.93 | 99.7 | 99.7 |
| Appearance / Odor | White | White | White |
Packaging
- 1 gallon
- 5 gallon
- 50 gallon
- Larger packaging available upon request
