| 简介 |
FIELD : chemistry.
SUBSTANCE : invention refers to production of highly pure niobium powder using hydride method. The method includes activation of niobium ingot by heating up to 700-900°C, its hydrogenation using saturated titanium hydride as hydrogen source, grinding of obtained niobium hydride to prescribed despersivity degree and dehydrogenation of obtained niobium powder using unsaturated titanium hydride. Niobium ingot is activated by heating under overpressure of 0.01-0.3 MPa in hydrogen atmosphere generated by hydrogen desorption from saturated hydride of multi-component intermetallic compound La1-yRyNi4Co where R designates rare-earth metals of cerium group and/or mishmetal, 0
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