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Development of Textured Microstructures in Ceramics with Large Thermal Expansion Anisotropy
Author(s) -
Paulik Steven W.,
Faber K. T.,
Fuller Edwin R.
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb07014.x
Subject(s) - microstructure , thermal expansion , materials science , anisotropy , composite material , ceramic , paramagnetism , fabrication , magnetic anisotropy , texture (cosmology) , residual stress , condensed matter physics , magnetization , optics , magnetic field , medicine , physics , alternative medicine , pathology , quantum mechanics , image (mathematics) , artificial intelligence , computer science
Fe 2 TiO 5 exhibits a high degree of anisotropy in both thermal expansion and paramagnetic susceptibility. Anisotropy in paramagnetic susceptibility allows textured microstructures to be produced using magnetically‐assisted grain alignment during sample fabrication. The resulting solid‐state sintered aligned samples had a b ‐axis orientation coefficient of 3.33 (vs 6.60 for an aligned powder–epoxy suspension) where an orientation coefficient of 1 represents a randomly‐oriented sample. This texturing reduced the residual stresses generated from the large thermal expansion anisotropy of the control samples, as evidenced by reduced microcracking and morphological texturing of the aligned microstructure.