ecoSic

ecoSic is a high-purity synthetic silicon carbide (SiC), produced in Spain. In a friction material, its primary function is that of a hard abrasive. With a hardness of 9 on the Mohs scale, it is used in highly controlled dosages to effectively clean the brake disc surface, removing oxide layers and unwanted tribofilms. This mechanical action ensures a direct, renewed contact between the pad and the disc, resulting in a higher and more responsive coefficient of friction (µ).

The key difference lies in its synthetic origin and quality control:

• High Purity and Consistency: As a synthetic product, the manufacturing process is strictly controlled. This guarantees exceptional chemical purity and consistent particle morphology from lot to lot, eliminating the impurities (e.g., metal oxides) and variability found in mineral-origin SiC or industrial by-products.
• Predictable Performance: The consistency of ecoSic translates directly into predictable and reliable tribological performance in the final formulation, a critical factor for high-performance applications.
• Local Production (Spain): Its manufacturing in Spain ensures a robust and reliable supply chain, stringent quality control, and complete product traceability.

Particle type selection is critical and allows for fine-tuning of performance:

• Coarse Grades (e.g., F220): Have a more aggressive abrasive action. They are used to achieve a higher initial "bite" and a generally greater friction level. However, an excessive size can increase disc wear and the risk of generating noise (NVH).
• Fine Grades (e.g., F400, F600): Produce a more controlled cleaning action and a finer surface finish on the disc. They are preferred in formulations where noise control and smoothness are priorities.

The wide range of ecoSic grit sizes, available in all FEPA grades and in both BLACK and GREEN color options, allows the formulator to find the exact balance. The BLACK variant is known for its toughness, while the GREEN variant, with higher purity, offers a more consistent abrasive action, allowing for an even finer level of adjustment in the formulation.

ecoSic must be used with precision and in low dosages, typically between 0.5% and 3% by weight of the formulation. An excess can lead to premature disc wear and NVH issues. It is especially useful in:

• Semi-Metallic and Low-Steel Formulations: Where high stopping power and a quick response are required.
• High-Performance and Racing Applications: To achieve very high coefficients of friction and keep disc surfaces in optimal condition under extreme loads.
• NAO Formulations: In very small doses, it can be used to "activate" or slightly increase a coefficient of friction that would otherwise be too low.

Yes. Silicon carbide possesses excellent thermal properties that, while not its primary function at these dosages, provide secondary benefits:

• High Thermal Conductivity: It helps to dissipate heat from "hot spots" that form at the friction interface, contributing to a more homogeneous temperature distribution.
• Low Thermal Expansion and High Thermal Shock Resistance: It provides dimensional stability to the matrix at high temperatures, helping to prevent the formation of microcracks on the pad's surface during rapid heating and cooling cycles.