Thermal Behavior of Iron Arsenides Under Non-Oxidizing Conditions
Thermal Behavior of Iron Arsenides Under Non-Oxidizing Conditions
复制标题
非氧化条件下砷化铁的热行为
DOI：
10.1021/acsomega.9b03928
复制
发表时间：
2020
期刊：
影响因子：
4.1
通讯作者：
Simon A. T. Redfern
中科院分区：
文献类型：
--
作者：
A. Seitkan;G. Lampronti;R. Widmer;N. Casati;Simon A. T. Redfern
为了了解Fe2As的热行为，在25-850℃的中性气氛下，用同步辐射粉末X射线衍射仪对Fe2As进行了原位研究，这对提金具有潜在的重要意义。当Fe2As分解时，首次观察到不一致的高温反应，并从实验上确定了以前未发现的具有NiAs型结构的高温FeAs相的存在。还没有发现高温Fe3As2相存在的证据。因此，先前公布的Fe-As系统相图必须进行相应的修改。
Fe2As has been studied in situ by synchrotron powder X-ray diffraction (PXRD) over the range of temperatures 25–850 °C and under a neutral atmosphere to understand its thermal behavior, which is potentially important for gold extraction. For the first time, incongruent high-temperature reactions of Fe2As are observed as it breaks down and the existence of a previously undiscovered high-temperature FeAs phase with an NiAs-type structure has been determined experimentally. No evidence has been found for the existence of the high-temperature Fe3As2 phase. Hence, the previously published phase diagram for the Fe–As system has to be modified accordingly.
直接还原熔炼加工双难熔金砷精矿
影响因子：
4.8
作者：
Seitkan A
通讯作者：
Seitkan A