Sedimentation of atoms in solid under a strong acceleration field of around 1 million g
Sedimentation of atoms in solid under a strong acceleration field of around 1 million g
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DOI：
10.1143/jjap.36.l498
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发表时间：
1997-04-15
期刊：
影响因子：
--
通讯作者：
Tashiro, S
中科院分区：
文献类型：
--
作者：
Mashimo, T;Okazaki, S;Tashiro, S
研究了高温下约100万（10（6））g的强加速度场（兆重力场）下固体中原子的行为。对锑（Sb）-铋（Bi）系固体合金在210-240 ℃下以（0.85-1.03）× 10（6）g的最大加速度Geld进行了55小时的超离心实验。在外部能量与热能相当或大于热能的位置处观察到Sb（约20- 0wt%）和Bi（80- 100wt%）的大的组成梯度以及晶格参数的连续变化。这一结果首次提供了固体中组分原子沉降的证据。
The behavior of atoms in a solid under a strong acceleration field of around 1 million (10(6)) g at high temperature (mega-gravity field) was examined. The ultracentrifuge experiment was performed on an antimony (Sb)-bismuth (Bi) system solid alloy in a maximum acceleration Geld of (0.85-1.03) x 10(6) g at 210-240 degrees C for 55 hours. Large composition gradients of Sb (about 20-0 wt%) and Bi (80-100 wt%) and the continuous changes in lattice parameters were observed at that location where the external energy was comparable to or larger than the thermal energy. This result provides the first evidence of the sedimentation of component atoms in a solid.