000088382 001__ 88382
000088382 005__ 20200716101500.0
000088382 0247_ $$2doi$$a10.1016/j.jeurceramsoc.2019.04.015
000088382 0248_ $$2sideral$$a111487
000088382 037__ $$aART-2019-111487
000088382 041__ $$aeng
000088382 100__ $$0(orcid)0000-0001-6337-5510$$aMoshtaghion, B.M.$$uUniversidad de Zaragoza
000088382 245__ $$aNon-Hall-Petch hardness dependence in ultrafine fibrous MgAl 2 O 4 -MgO eutectic ceramics fabricated by the laser-heated floating zone (LFZ) method
000088382 260__ $$c2019
000088382 5060_ $$aAccess copy available to the general public$$fUnrestricted
000088382 5203_ $$aMgAl 2 O 4 -MgO eutectic ceramics were fabricated by the laser-heated floating zone (LFZ) method with various growth rates to assess its possible beneficial effect on microstructural aspects and mechanical properties. It was determined that the growth rate optimizing the microstructure and mechanical properties is 750 mm/h; below this value, coarsening of the fibrous microstructure takes place with a degradation of these properties. In the extreme case of 50 mm/h growth rate, the presence of undesirable transverse cracks was unavoidable. Thanks to the high growth rate of 750 mm/h, ultra-fine fibrous microstructure MgAl 2 O 4 -MgO eutectic ceramics can thus be fabricated with greater hardness (15.5 GPa from Vickers indentation and 22 GPa from nanoindentation) and flexural strength (˜345 MPa). It is reported that hardness scales with the interfiber spacing ¿ according to a law of the type ln¿/¿, contrary to the assumed Hall-Petch-like dependence. This proposed law can be explained in terms of dislocation hardening induced by the MgO fibers.
000088382 536__ $$9info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2016-77769R$$9info:eu-repo/grantAgreement/ES/MINECO/Juan de la Cierva Program
000088382 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000088382 590__ $$a4.495$$b2019
000088382 591__ $$aMATERIALS SCIENCE, CERAMICS$$b1 / 28 = 0.036$$c2019$$dQ1$$eT1
000088382 592__ $$a1.164$$b2019
000088382 593__ $$aMaterials Chemistry$$c2019$$dQ1
000088382 593__ $$aCeramics and Composites$$c2019$$dQ1
000088382 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000088382 700__ $$0(orcid)0000-0003-2242-6822$$aPeña, J.I.$$uUniversidad de Zaragoza
000088382 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000088382 773__ $$g39 (2019), 3208-3212$$pJ. Eur. Ceram. Soc.$$tJournal of the European Ceramic Society$$x0955-2219
000088382 8564_ $$s532868$$uhttps://zaguan.unizar.es/record/88382/files/texto_completo.pdf$$yPostprint
000088382 8564_ $$s57396$$uhttps://zaguan.unizar.es/record/88382/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000088382 909CO $$ooai:zaguan.unizar.es:88382$$particulos$$pdriver
000088382 951__ $$a2020-07-16-09:12:45
000088382 980__ $$aARTICLE