کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1572074 | 1514425 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of expansion temperature of expandable graphite on microstructure evolution of expanded graphite during high-energy ball-milling Effect of expansion temperature of expandable graphite on microstructure evolution of expanded graphite during high-energy ball-milling](/preview/png/1572074.png)
Two expanded graphites (EG), marked as EG-1 and EG-2, were prepared by rapid heating of expandable graphite to 600 and 1000 °C, respectively, and ball milled in a high-energy mill (planetary-type) under air atmosphere. The microstructure evolution of the ball-milled samples was characterized by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). XRD analysis shows that the evolution degree of the average crystallite thickness along the c-axis (Lc) of EG-2 is lower than that of EG-1 during the milling process. From the HRTEM images of the samples after 100 h ball-milling, slightly curved graphene planes can be frequently observed both in the two EGs, however, EG-1 and EG-2 exhibit sharply curved graphene planes and smoothly curved graphene planes with high bending angles, respectively.
Journal: Materials Characterization - Volume 60, Issue 12, December 2009, Pages 1541–1544