Synthetic [100] tilt grain boundaries in forsterite: 9.9 to 21.5°
Synthetic [100] tilt grain boundaries in forsterite: 9.9 to 21.5°
复制标题
镁橄榄石中的合成 [100] 倾斜晶界：9.9 至 21.5°
DOI：
10.1007/s00269-005-0448-9
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发表时间：
2005
影响因子：
1.4
通讯作者：
G. Dresen
中科院分区：
文献类型：
--
作者：
S. Heinemann;R. Wirth;M. Gottschalk;G. Dresen
通过将高度抛光的单晶片直接结合，制备了纯橄榄石双晶。我们制备了一系列倾斜轴为a，倾斜角度为9.9 ~ 21.5°的人工晶界。透射电子显微镜（TEM）研究显示，在所有取向偏差中，c位错排列的晶界为低角度，倾斜角可达21.5°。在<400℃退火时，低角度晶界组织充分发育，在1650℃进一步退火后，晶界区域未见组织变化。
Pure forsterite bicrystals were produced by direct bonding of highly polished single crystal plates. We fabricated a series of synthetic grain boundaries with tilt axis a and tilt angles ranging from 9.9 to 21.5°. Transmission Electron Microscope (TEM) investigations show low-angle grain boundaries with arrays of c-dislocations for all misorientations with tilt angles up to 21.5°. Low-angle grain boundary structures were fully developed at annealing temperatures <400°C and no structural changes were observed in the grain boundary region after further annealing at 1650°C.