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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Internal friction of the glassy tektites
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Internal friction of the glassy tektites

机译：玻钛铁矿的内摩擦

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Tektites are naturally occurring glasses, perhaps of meteoritic origin. They occur all over the world. They range in size from #mu#m to decimeter. They are based on the compounds silica and alumina, with smaller concentrations of alkali metal and transition metal oxides. Their origin is in vigorous dispute; some scientists think they are of terrestrial earth origin, others believe they come from interplanetary space, as is true of meteorites. We have secured seven specimens from various regions of the earth and have measured the internal friction spectrum of several in the kilocycle frequency range above room temperature, where internal friction peaks of synthetic glasses have been observed. A well defined loss peak is observed around 500 K in a number of specimens. We have also measured the loss spectrum of obsidian and of blast furnace slag. From comparison of these measurements, we conclude that tektites are probably of volcanic origin, the loss peaks being associated with the reorientation of Fe-oxygen complexes.
机译：陨石是天然存在的玻璃，可能起源于陨石。它们遍布世界各地。它们的大小从＃mu＃m到分米。它们基于化合物二氧化硅和氧化铝，具有较小浓度的碱金属和过渡金属氧化物。他们的来历充满争议;一些科学家认为它们起源于地球，而另一些科学家则认为它们来自行星际空间，就像陨石一样。我们已经从地球的各个区域获得了七个样本，并在室温以上的千分之一频率范围内测量了几个样品的内部摩擦谱，在其中观察到了合成玻璃的内部摩擦峰。在许多样品中，在500 K附近观察到一个明确定义的损耗峰。我们还测量了黑曜石和高炉矿渣的损失谱。从这些测量结果的比较中，我们得出结论，陨铁矿可能是火山成因的，损失峰与铁氧络合物的重新定向有关。

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