کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11006685 1508903 2018 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Screw dislocation assisted spontaneous growth of single-crystalline α-Al2O3 microrods
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Screw dislocation assisted spontaneous growth of single-crystalline α-Al2O3 microrods
چکیده انگلیسی
Herein we reported a simple chemical vapor deposition approach to synthesize single crystal α-Al2O3 microrods with diameters of 2-4 μm and lengths of 10-30 μm on the as-prepared SiC-Si-Al2O3 ceramics based on the screw dislocation growth. Two types of evidence for screw dislocation growth have been conclusively observed in the as-synthesized microrods: scanning electron microscopy analysis reveals that the representative morphology feature of the screw dislocation growth is the stepwise spiral terrace configuration and the growth kinetics of the as-synthesized microrods follows the prediction of the dislocation growth mechanism as described by Burton-Cabrera-Frank theory. This work provides not only a new method for synthesizing Al2O3 microrods but also a new insight into the growth mode for Al2O3 microrods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Communications - Volume 10, December 2018, Pages 93-96
نویسندگان
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