Eutectic Solidification of MgO-MgAl2O4 |
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| Authors: | F L KENNARD R C BRADT V S STUBICAN |
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| Affiliation: | Department of Material Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802 |
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| Abstract: | Directional solidification of the MgO-MgAl2O4 eutectic yields MgO whiskers in a spinel matrix. Microstructures produced at solidification rates of 0.4 to 30.0 cm/h were studied. The interlamellar spacing agrees with the inverse-square-root dependence on solidification rate. Colony-free microstructures formed in all ingots solidified at rates of <2.0 cm/h. For ingots solidified with planar growth, the orientation relation of the phases is:  |
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