Fraunhofer Institute for Ceramic Technologies and Systems IKTS
Cockpit windows and external coatings on aircraft are subjected to severe mechanical stress caused by abrasive particles, particularly at low altitudes or in challenging environments. This results in frequent replacement cycles, high maintenance costs and increased resource consumption.
The recently launched NaBuCo project addresses this challenge with nanodiamond-based coatings that significantly increase abrasion resistance whilst ensuring optical transparency and aviation suitability.
The challenge
Cockpit windows made from polymeric materials such as PMMA are particularly susceptible to abrasion. In many applications, replacement intervals of just a few months are not uncommon.
This results in:
• High maintenance costs (up to ~60% of window-related costs)
• Limited availability
• Increased use of materials and energy
• Environmental impact due to frequent replacement cycles
Our solution
In the NaBuCo project, the partners are developing nanoparticle-reinforced polymer coatings based on nanodiamonds.
These coatings combine exceptional hardness (nanodiamonds), flexibility and processability (polyurethane systems) with compatibility with aviation requirements.
This increases the scratch and wear resistance of the coated cockpit windows, which also exhibit hydrophobic and self-cleaning properties. The coatings maintain optical transparency and can reduce ice formation and aerodynamic drag.
