Ferroniobium

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ferroniobium

 

a ferroalloy consisting of approximately 60 percent Nb (or Nb + Ta), 10–12.5 percent Si, 2–6 percent Al, and 3–8 percent Ti (Fe and impurities constituting the remainder). Ferroniobium is produced through electric-furnace aluminothermy using pyrochlore concentrate or technical niobium pentoxide. It is used in the smelting of structural steel and heatresistant alloys.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
It is used as an alloying element in steel production in the form of ferroniobium (Fe-Nb).
Catalao is a Brazilian producer of ferroniobium, a key element used in the strengthening of steel and for superconductive materials and superalloys, such as in jet engines or MRI scanners.
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If increase of titanium content in ferroalloy enables reduction of its density and melting point of the alloy changes insignificantly [8], in melting of ferrovanadium, ferroniobium and ferromolybdenum sharp increase of temperature of alloys is observed as content of the main alloying element increases, which causes reduction of the pool dimensions and need to reduce optimum mass of the metal being remolten.
Montreal, Quebec SIC: 1060 Sequoia is engaged in mining and production of Niobium, Ferroniobium and various metallic minerals.
CBMMs production of ferroniobium was 23,327t last year, compared to 25,006t in 1999, and the expansion would lift capacity from 30,000 t to 45,000t.
* Nb does not melt [the melting point of ferroniobium (FeNb) is near 2960F (1627C)].
Montreal, Quebec Sequoia is enageged in mining and production of Niobium, Ferroniobium and various metallic minerals.