000132188 001__ 132188
000132188 005__ 20250923084412.0
000132188 0247_ $$2doi$$a10.1016/j.ceramint.2023.10.104
000132188 0248_ $$2sideral$$a137515
000132188 037__ $$aART-2024-137515
000132188 041__ $$aeng
000132188 100__ $$aWang, Shunheng
000132188 245__ $$aMicrostructural stability and high temperature strength of directionally solidified Al2O3/Er3Al5O12/ZrO2 eutectic ceramics
000132188 260__ $$c2024
000132188 5203_ $$aAl2O3/Er3Al5O12(EAG)/ZrO2 directionally solidified eutectic ceramics (DSECs) were prepared with high frequency induction heating zone melting (IHZM), and heat treated at high temperature. Their phase components, microstructures, flexural and tensile strengths were investigated. The results indicated that the microstructures were composed of the mutually interpenetrated Al2O3, EAG and ZrO2 (stabilized by Er3+ ion) phases. As the growth rate increased from 2 mm/h to 20 mm/h, the phase size decreased and the irregular microstructure became regular. When the heat treatment temperature was up to 1400 °C, the ionic diffusion was triggered and the phase began to grow. Under the action of surface energy and special microstructure, the growth of phase stopped after it reached a certain threshold. The sample with smaller phase size exhibited higher strength at room temperature, which was dependent on the crack propagation resistance. However, the speed of strength reduction was faster. The formation of surface groove, microcrack and malignant growth phase was responsible for this rapidly decreasing of strength. The flexural and tensile strengths of eutectic ceramic with larger phase size remained at 671.6 MPa and 359.45 MPa after long-term heat treatment at 1500 °C, respectively. The smaller difference between the original phase size and the maximum coarsened phase size was beneficial to avoid the occurrence of the above mentioned harmful factors and was the source of strength stability.
000132188 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000132188 590__ $$a5.6$$b2024
000132188 592__ $$a1.034$$b2024
000132188 591__ $$aMATERIALS SCIENCE, CERAMICS$$b3 / 33 = 0.091$$c2024$$dQ1$$eT1
000132188 593__ $$aElectronic, Optical and Magnetic Materials$$c2024$$dQ1
000132188 593__ $$aCeramics and Composites$$c2024$$dQ1
000132188 593__ $$aSurfaces, Coatings and Films$$c2024$$dQ1
000132188 593__ $$aProcess Chemistry and Technology$$c2024$$dQ1
000132188 593__ $$aMaterials Chemistry$$c2024$$dQ1
000132188 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000132188 700__ $$aLiu, Juncheng
000132188 700__ $$aLan, Dehui
000132188 700__ $$aGao, Rui
000132188 700__ $$0(orcid)0000-0003-2242-6822$$aPeña Torre, José Ignacio$$uUniversidad de Zaragoza
000132188 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000132188 773__ $$g50, 1 (2024), 306-314$$pCeram. int.$$tCeramics International$$x0272-8842
000132188 8564_ $$s9615128$$uhttps://zaguan.unizar.es/record/132188/files/texto_completo.pdf$$yVersión publicada
000132188 8564_ $$s2451207$$uhttps://zaguan.unizar.es/record/132188/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000132188 909CO $$ooai:zaguan.unizar.es:132188$$particulos$$pdriver
000132188 951__ $$a2025-09-22-14:30:57
000132188 980__ $$aARTICLE