Resumen: We analyze the thermal shock resistance of directionally solidified eutectics. When quenching in water, the resistance starts to deteriorate with temperature differences in the range 260 to 300 K, almost independent of the microstructure size (or initial flexural strength). Unlike other strong, dense ceramics, the loss of strength is gradual upon quenching in boiling water. The onset of crack propagation seems to be controlled by the mismatch of the thermal and elastic properties of the component phases, while the length of the propagated cracks is limited by their quantity, which is estimated to scale approximately with the interface density. Idioma: Inglés DOI: 10.1016/j.scriptamat.2018.09.036 Año: 2019 Publicado en: SCRIPTA MATERIALIA 160 (2019), 20-24 ISSN: 1359-6462 Factor impacto JCR: 5.079 (2019) Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 70 / 314 = 0.223 (2019) - Q1 - T1 Categ. JCR: METALLURGY & METALLURGICAL ENGINEERING rank: 6 / 79 = 0.076 (2019) - Q1 - T1 Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 34 / 103 = 0.33 (2019) - Q2 - T2 Factor impacto SCIMAGO: 2.046 - Condensed Matter Physics (Q1) - Materials Science (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Mechanics of Materials (Q1) - Metals and Alloys (Q1) - Mechanical Engineering (Q1)