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nature : niobium and hydrogen generated two compounds : hydrogenated niobium and niobium hydride two. Niobium metal in the dense 300 ° Cbegan to absorb hydrogen, hydrogen absorption niobium exothermic reaction, hydrogen solubility in niobium with temperature growth decline, lower hydrogen pressure increases to improve. Niobium dissolved hydrogen is reversible, low-temperature (300 ° C) absorption of hydrogen and high-temperature (800 to 900 ° C) vacuum was released. Niobium after hydrogen absorption expansion, released after the shrinkage of hydrogen, in addition, niobium hydride sexual brittle and easily shattered. These properties are used for preparation of metal niobium powder. After several hup-hydrogen-crushing operation, receive 1,993,600 niobium powder. Hydrogen is also used broken law niobium renewable waste.
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