000119748 001__ 119748
000119748 005__ 20230914083741.0
000119748 0247_ $$2doi$$a10.3390/ceramics5030040
000119748 0248_ $$2sideral$$a130562
000119748 037__ $$aART-2022-130562
000119748 041__ $$aeng
000119748 100__ $$aBoccaccini, Dino N.
000119748 245__ $$aInfluence of porosity on R-Curve behaviour of tetragonal stabilized zirconia
000119748 260__ $$c2022
000119748 5060_ $$aAccess copy available to the general public$$fUnrestricted
000119748 5203_ $$aY2O3 at 3% mol partially stabilized Zr2O3 (3YSZ) porous specimens with variable open porosity, from fully dense up to ~47%, and their potential use as anode supports for new solid oxide cell designs were fabricated by tape casting. The stiffness, strength and fracture properties were measured to investigate the influence of porosity on mechanical properties. The evolution of Young’s modulus and characteristic strength was evaluated by ball-on-ring tests. The variation of critical plane stress Mode I stress intensity factor with porosity has also been investigated and modelled from the results obtained from fracture mechanics testing. R-curve behaviour was observed in dense 3YSZ specimens and in porous 3YSZ compositions. The width of the transformation zone after fracture mechanics testing and the variation with porosity were investigated. The phases existing in the fracture zone were determined and quantified by Raman spectroscopy. It was found that the width of the transformation zone increased with increasing porosity. A new general R-curve model for 3YSZ based on the McMeeking–Evans equation is presented, which can be used to predict the behaviour of the R-curve as a function of porosity, simply by knowing the properties of the dense material and introducing in this equation porosity-dependent laws on the key properties that affect fracture toughness.
000119748 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000119748 592__ $$a0.428$$b2022
000119748 593__ $$aMaterials Science (miscellaneous)$$c2022$$dQ2
000119748 593__ $$aCeramics and Composites$$c2022$$dQ2
000119748 594__ $$a3.0$$b2022
000119748 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000119748 700__ $$aGil, Vanesa
000119748 700__ $$0(orcid)0000-0002-4308-1686$$aGurauskis, Jonas
000119748 700__ $$0(orcid)0000-0003-0747-405X$$aMerino, Rosa I.
000119748 700__ $$aPellacani, Andrea
000119748 700__ $$aMortalò, Cecilia
000119748 700__ $$aSoprani, Stefano
000119748 700__ $$aRomagnoli, Marcello
000119748 700__ $$aCannio, Maria
000119748 773__ $$g5, 3 (2022), 533-549$$tCeramics$$x2571-6131
000119748 8564_ $$s3900632$$uhttps://zaguan.unizar.es/record/119748/files/texto_completo.pdf$$yVersión publicada
000119748 8564_ $$s2742259$$uhttps://zaguan.unizar.es/record/119748/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000119748 909CO $$ooai:zaguan.unizar.es:119748$$particulos$$pdriver
000119748 951__ $$a2023-09-13-15:02:05
000119748 980__ $$aARTICLE