Kim, CS Lombardo, SJ Winholtz, RA 2024-01-21T04:37:40Z 2024-01-21T04:37:40Z 2021-09-01 2005-08 0002-7820 https://pubs.kist.re.kr/handle/201004/136275 Ceramic beams are induced in situ to form complex shapes at elevated temperature without the application of an external stress. This process has been demonstrated for thin alumina substrates coated with a layer of magnesia. The internal strain causing the substrates to deform at elevated temperature arises as a consequence of strain mismatch accompanying the penetration of the coating into the substrate. The magnitude of the deformation depends on the amount of coating applied, on the thickness of the substrate, on the density of the substrate, and on the temperature. During exposure of the beams to elevated temperature, the magnesia coating reacts with the alumina substrate to form the spinel phase; the resulting volume change accompanying the phase transformation is likely the predominant driving force for deformation. English WILEY CAST GREEN BODIES CONSTRAINED DENSIFICATION EXTERNAL-PRESSURE MISMATCH STRAIN THIN-FILMS ACTUATORS CURVATURE CERAMICS STRESSES DETECTOR Strain-induced deformation in magnesia-alumina layered composites Article 10.1111/j.1551-2916.2005.00410.x 1 JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.88, no.8, pp.2064 - 2070 JOURNAL OF THE AMERICAN CERAMIC SOCIETY 88 8 2064 2070 scie scopus 000230870000008 Materials Science, Ceramics Materials Science Article CAST GREEN BODIES CONSTRAINED DENSIFICATION EXTERNAL-PRESSURE MISMATCH STRAIN THIN-FILMS ACTUATORS CURVATURE CERAMICS STRESSES DETECTOR