Ultrahigh toughness zirconia ceramics.

ABSTRACT: The attainment of both high strength and toughness is the ultimate goal for most structural materials. Although ceramic material has been considered for use as a structural material due to its high strength and good chemical stability, it suffers from the limitation of low toughness. For instance, although Y₂O₃-stabilized tetragonal ZrO₂ polycrystals (Y-TZPs) exhibit remarkable toughness among ceramics due to their phase transformation toughening mechanism, this toughness is still much weaker than that of metals. Here, we report Y-TZP-based ceramic materials with toughnesses exceeding 20 MPa m^1/2, which is comparable to those of metals, while maintaining strengths over 1,200 MPa. The superior mechanical properties are realized by reducing the pha

SUBMITTER: Matsui K 

PROVIDER: S-EPMC10319041 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature