THE phase diagram of the niobium–silicon system has been established by melting-point determinations, X-ray examination and metallography, and is shown in Fig. 1. Alloys were prepared in the ...

For it has finally borne fruit. Using data from the astronauts' work, scientists back on Earth have now managed, for the ...

Niobium is a metal in groupVB of the periodic table with atomic number 41, an atomic weight of 92.91, and a density of 8.4 Mg/m 3. Its melting point is 2468 C, and it boils at 3300 C. The electronic ...

Niobium, a rare mineral primarily used to improve steel alloys, and of which Brazil is the world's main producer has seen prices relatively stable. Last year Brazil exported some 90% of its ...

CBMM has a mine with over 800 million tons of niobium reserves and holds 82% of the world niobium market share. A consortium of five Chinese companies has acquired a 15% stake in Brazil's ...