Атомный состав, микроструктура и электромагнитные свойства микропорошка шунгита
Аннотация
Целью работы являлось исследование микроструктурных, элементных и электромагнитных свойств образцов микропорошка, изготовленного из природного минерала шунгита. Обнаружено, что в исследованных образцах минерала шунгита по данным рентгеноспектрального микроанализа содержание углерода на уровне от 44 до 54 масс. %, а содержание железа не превышает 3.9 масс. %. В изготовленном микропорошке шунгита содержание железа возрастает до уровня 6.1 масс. %.
Предположительно железо в микропорошке шунгита существует в виде ферримагнитных наночастиц магнетита и пирита, образующихся при перемоле частиц шунгита в шаровых мельницах со стальным корпусом и размольной гарнитурой. Изготовленный микропорошок шунгита показал также наличие слабых ферримагнитных свойств по данным выполненных измерений магнитной проницаемости путем векторного анализа импеданса электрических цепей.
Микропорошок шунгита, изготовленный из шунгитового минерала, по своим электромагнитным характеристикам является эффективным радиопоглощающим наполнителем для строительных материалов для частот диапазонов сотовой связи.
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Литература
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