1. Institute of Energy and Climate Research: Materials Synthesis and Processing (IEK‐1) Forschungszentrum Jülich GmbH Jülich Germany
2. Department of Ceramics and Refractory Materials Institute of Mineral Engineering RWTH Aachen University Aachen Germany
3. Department of Materials Science Montanuniversität Leoben Leoben Austria
4. Institute of Ceramic and Glass (ICV‐CSIC) Madrid Spain
5. Institut für Textiltechnik (ITA) RWTH Aachen University Aachen Germany