Affiliation: | a Institute of Advanced Ceramics, Hamburg University of Technology, Hamburg, Germany b Institute for Ceramics in Mechanical Engineering, Karlsruhe Institute of Technology, Karlsruhe, Germany c Materials Mechnics, Karlsruhe Institute of Technology, Karlsruhe, Germany d Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany e University of Otago, Dunedin, New Zealand |