r0-Bone – Sustainable Alternative for Brake Pads

r0-bone is a functionalized organic carbon from a sustainable source, engineered as a high-performance alternative to fossil-derived friction modifiers (like petroleum coke) and friction powders derived from CNSL (Cashew Nut Shell Liquid). Its main function is to act as a friction modifier that stabilizes the coefficient of friction and reduces wear, especially at high temperatures.

r0-bone acts as a carbon precursor at the friction interface. During braking, it contributes to the formation of a stable and compact carbonaceous transfer layer (tribofilm). This layer protects the surfaces, prevents direct metal-to-metal contact, and regulates dissipated energy, resulting in more stable friction and a controlled wear rate.

r0-bone offers clear advantages over both:

• Compared to petroleum coke: It provides higher purity, consistency, and more predictable performance due to a lower content of abrasive impurities (such as sulfur or heavy metals).
• Compared to CNSL-derived friction powders: It ensures greater product stability (less moisture sensitivity) and safer handling during production, while delivering superior tribological performance in friction stabilization.

The organic nature and particle morphology of r0-bone help create a tribofilm with better damping properties. This contributes to decoupling the high-frequency vibrations generated at the interface, reducing the propensity for noise (squeal) and improving braking comfort.

r0-bone is a prime example of the circular economy. By upcycling an organic by-product, it avoids the use of carbons derived from fossil fuels, which have a high carbon footprint. Its use allows manufacturers to drastically reduce the environmental impact of their formulations and align with the most demanding decarbonization targets of the automotive industry.