Improving the mechanical properties of zirconia in instrument bearings V. V. Alisin, B. A. Diethelm, A. V. Kulebyakin, V. A. Myzina and N. Yu. Tabachkova MATEC Web Conf., 329 (2020) 02023 Published online: 26 November 2020 DOI: 10.1051/matecconf/202032902023