Abstract
Theβ→α phase transformation has been studied in SiC sintered with addition of boron and carbon by optical microscopy, and scanning and transmission electron microscopy. In the late stage of densification and during subsequent anneals, a feathers develop at the expense of theβ grains. They are constituted of two adjacent grains whose crystalline structures are related to one another by four symmetry operations. From the orientation relationship it is shown that the feathers can be describe as penetration twins.
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Lancin, M. Phase transformation ß→α in sintered SiC involving feathers formation. J Mater Sci 19, 4077–4086 (1984). https://doi.org/10.1007/BF00980774
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DOI: https://doi.org/10.1007/BF00980774