Abstract
Multilayer coatings used to create decorative interference colors may experience color degradation when thermally reactive metallic layers, such as copper and aluminum, are subjected to high-temperature manufacturing processes. This can cause atomic diffusion and the formation of intermetallic compounds that may alter the optical properties of the stack. To mitigate this, a separating layer, for example a thin film of niobium, can be incorporated between the reactive metallic layers during fabrication. This separating layer can function as a diffusion barrier to obstruct atomic migration at elevated temperatures. By inhibiting the formation of intermetallic compounds, the barrier layer may help preserve the designed optical properties of the stack, thereby improving the thermal stability of the intended interference color.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Zhou, Marco and Guo, Damon, "Thermally Stable Multilayer Coating with a Diffusion Barrier for Interference Colors", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/9735