Mechanical Properties of Zirconium Ceramics with Hierarchical Porous Structure

International Seminar on Interdisciplinary Problems in Additive Technologies

材料科学;物理学

Kulkov, S.^1,2,3 ; Shutilova, E.^1 ; Buyakova, S.^1,2,3

Institute of Strength Physics and Materials Science, SB RAS, 2/4, pr. Akademicheskii, Tomsk

634055, Russia^1

Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk

634050, Russia^2

Tomsk State University, 36, Lenin Avenue, Tomsk

634050, Russia^3

关键词: Cellular elements;    Cellular structure;    Hierarchical porous structures;    Low deformations;    Mechanical instabilities;    Nonlinear elasticity;    Porous ceramics;    Ultra fine powder;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/140/1/012017/pdf
DOI  :  10.1088/1757-899X/140/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The work studies porous ceramics produced from ultra-fine powders. The porosity of ceramic samples was from 15 to 80%. The ceramic materials had cellular structure. A distinctive feature of all deformation diagrams obtained in the experiment was their nonlinearity at low deformations, which was described by the parabolic law. It was shown that the observed nonlinear elasticity for low deformations on deformation diagrams is due to mechanical instability of cellular elements in a ceramic frame.