OBSERVATION OF TWIN CONFIGURATIONIN β-SiC WHISKERS
ZHOU Yanchun;CHANG Xin;ZHOU Jing;XIA Fei Institute of Metal Research; Academia Sinica; Shenyang
Cite this article:
ZHOU Yanchun;CHANG Xin;ZHOU Jing;XIA Fei Institute of Metal Research; Academia Sinica; Shenyang. OBSERVATION OF TWIN CONFIGURATIONIN β-SiC WHISKERS. Acta Metall Sin, 1991, 27(1): 121-125.
Abstract The twin configuration of β-SiC whiskers prepared by the vapour-liquid-solid process was investigated under TEM. In the whiskets with "bamboo jo-int" morphology, the β-SiC part is jointed with the one-dimensional disorderedpart by the {111}_β twin boundary, microtwins of several atomic layer thick werepresent in β-SiC region. It was noted that the {111}_β twin boundary divides someβ-SiC regions into two parts. The second-order twin joint was also observed at thewhisker tip and the branching position of the bicrystalline whisker. Electron diffra-ction analysis demonstrated that the twin boundary in the bicrystalline whisker isparallel to the matrix {001)_M plane.
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