Surface Tension of Iron Hydride Formed by the Reaction of Iron-Silicate-Water under Pressure.
Surface Tension of Iron Hydride Formed by the Reaction of Iron-Silicate-Water under Pressure.
复制标题
铁-硅酸盐-水在压力下反应形成的氢化铁的表面张力。
DOI：
10.2183/pjab.70.71
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
T. Uchida
中科院分区：
文献类型：
--
作者：
T. Hishinuma;Takehiko Magi;T. Uchida
基于淬火样品的织构观察，研究了铁-硅酸-水在5GPa和高温下反应形成的氢化铁的表面张力。研究发现，氢化铁的表面张力比硅酸盐的表面张力大得多。因此，在部分熔融的硅酸盐和熔融的氢化铁的混合物中，氢化铁倾向于积聚成不连续的口袋并且难以发生渗滤。这一结果表明，在原地球中，只有当硅酸盐的熔化程度非常高时，铁水与部分熔融的硅酸盐的重力分离才会发生。
Surface tension of iron hydride formed by the reaction of iron-silicate-water at 5GPa and high temperature was studied based on the texture observation of the quenched samples. It was found that the surface tension of iron hydride is much larger compared with that of the silicates. Therefore, in a mixture of partially molten silicates and molten iron hydride, the iron hydride tends to accumulate into disconnected pockets and percolation is hard to occur. This result implies that in the proto Earth, the gravitational separation of the molten iron from the partially molten silicates could occur only when the degree of melting of silicates was very high.