Views: 0 Author: Site Editor Publish Time: 2025-12-02 Origin: Site
As protective coating technologies advance, SiO₂ coated aluminum powder and Dense SiO₂ coated aluminum powder have become essential materials in automotive, industrial, and outdoor protective applications. Choosing the right type directly affects corrosion resistance, durability, and metallic appearance. This article explains the differences clearly—based on real manufacturing data from Silver Rocket Metallic Pigment Co., Ltd.
Both materials share the same foundation: high-purity aluminum flakes coated with SiO₂.
However, the density and structure of the SiO₂ layer determine performance.
Standard SiO₂ coated aluminum powder uses a classic inorganic coating. It provides reliable stability, good brightness, and moderate corrosion resistance.
Dense SiO₂ coated aluminum powder uses a sol-gel SiO₂ treatment, forming a denser and more uniform SiO₂ film. This significantly improves acid resistance, salt-spray resistance, and weather durability.
Independent testing shows that dense SiO₂ coatings can improve corrosion resistance by up to 40–60% compared to classic SiO₂ coatings (industry benchmark data, 2024).
Standard SiO₂ coated aluminum powder offers reliable oxidation resistance and stable hiding power.
Aluminum flakes remain bright and well-oriented due to a narrow particle size distribution.
Ideal for applications where brightness + stability are both important.
Typical Technical Data (from Silver Rocket):
| Grade | D50 (µm) | Non-Volatile Content | Coating Type |
|---|---|---|---|
| ZPC-8081 | 8 | 98% | SiO₂ |
| ZPC-8201 | 20 | 98% | SiO₂ |
| ZPC-8383 | 38 | 98% | SiO₂ |
| ZPC-8504 | 50 | 98% | SiO₂ |
| ZPC-8705 | 70 | 98% | SiO₂ |
The sol-gel method forms a denser, more integrated SiO₂ film around the metallic flakes.
Dense SiO₂ coating provides long-term outdoor durability—even in coastal or polluted areas.
These grades are specifically designed for exterior coatings requiring high corrosion resistance.
Technical Data (from Silver Rocket):
| Grade | D50 (µm) | Non-Volatile Content | Coating Type |
|---|---|---|---|
| YJS-10 | 10 | ≥99% | Dense SiO₂ |
| YJS-16 | 16 | ≥99% | Dense SiO₂ |
| YJS-25 | 25 | ≥99% | Dense SiO₂ |
| YJS-34 | 34 | ≥99% | Dense SiO₂ |
| YJS-40 | 40 | ≥99% | Dense SiO₂ |
| YJS-50 | 50 | ≥99% | Dense SiO₂ |
| Feature | SiO₂ Coated Aluminum Powder | Dense SiO₂ Coated Aluminum Powder |
|---|---|---|
| Coating Process | Standard SiO₂ layer | Sol-gel dense SiO₂ |
| Corrosion Resistance | Good | Excellent |
| Acid / Salt Spray Resistance | Moderate | High – for harsh conditions |
| Weather Resistance | Good | Premium outdoor level |
| Typical Use | Indoor & general coatings | Outdoor, automotive, protective coatings |
| Cost | Lower | Higher (due to advanced process) |
SiO₂ coated aluminum powder is ideal for:
Automotive components
Coil coatings
Plastic coatings
General hardware finishes
Dense SiO₂ coated aluminum powder is preferred for:
Outdoor metallic coatings
Marine or coastal applications
Industrial anti-corrosion systems
Harsh weather environments
Not always. It offers stronger corrosion resistance, but standard SiO₂ coatings are more cost-effective for indoor or mild environments.
Yes. Both maintain silver-dollar structure and smooth surfaces. However, dense SiO₂ coatings may slightly sacrifice brightness due to the thicker protective layer.
Absolutely. Their enhanced durability makes them ideal for exterior parts and protective applications.
Yes. As a factory-direct supplier, Silver Rocket provides custom D50 ranges, coating systems, and formulations for global clients.
Both SiO₂ coated aluminum powder and dense SiO₂ coated aluminum powder offer unique advantages.
For general metallic coatings requiring stability and brightness, standard SiO₂ grades are ideal.
For outdoor, high-corrosion, or automotive protective applications, dense SiO₂ coatings deliver superior performance.
To request samples, specifications, or OEM cooperation, contact:
https://www.silverocket.com/
info@silverocket.com