1. Mechanical properties of zirconia periodic open cellular structures
- Author
-
Douglas Fabris, Júlio C.M. Souza, Bruno Henriques, Paulo Daniel Araújo Pinto, J. Mesquita-Guimarães, Márcio Celso Fredel, and Filipe Samuel Silva
- Subjects
010302 applied physics ,Materials science ,Process Chemistry and Technology ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Finite element method ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Compressive strength ,0103 physical sciences ,Cnc milling ,Materials Chemistry ,Ceramics and Composites ,Cubic zirconia ,Composite material ,0210 nano-technology ,Porosity - Abstract
The aim of this study was to manufacture zirconia periodic open cellular structures (POCS) (39%–57% porosity) and evaluate their mechanical properties. Zirconia POCS with 39%, 47% and 57% porosity were obtained from a CAD/CAM blank using a CNC milling machine. Specimens with a feldspar-based porcelain infiltrated in the porosities were also produced and tested. The elastic and inelastic properties of the all samples were obtained by compression strength tests. The structures were analyzed using XRD and SEM. FEA was also performed to evaluate the porous structures and for optimization. Zirconia POCS were successfully produced using a CAD/CAM technique. Porous size and distribution can be easily modified to tailor the desired POCS mechanical properties. Elastics and inelastic properties were well fitted by the Gibson-Ashby model, which allows designing POCS with predictable results.
- Published
- 2019