columbium


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columbium

(kəlŭm`bēəm), symbol Cb, former name of the chemical element niobiumniobium
, metallic chemical element; symbol Nb; at. no. 41; at. wt. 92.90638; m.p. about 2,468°C;; b.p. 4,742°C;; sp. gr. 8.57 at 20°C;; valence +2, +3, +4, or +5.
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columbium

[kə′ləm·bē·əm]
(chemistry)
References in periodicals archive ?
Table 98: US Historic Perspective for High PerformanceAlloys by Product Group/Segment - Non-Ferrous Alloys (Aluminum, Magnesium, Titanium, and Zirconium); RefractoryMetals (Molybdenum, Tungsten, Columbium, and Tantalum);Platinum Group Metals (Platinum, Palladium, Rhodium,Ruthenium, and Iridium); and Special Alloys & Super AlloysMarkets Independently Analyzed with Annual Sales Figures inMetric Tons for Years 2004 through 2009 (includescorresponding Graph/Chart) III-18
The columbium element of the surcharge will be based on the monthly mean value for Ferro Columbium (Niobium) found on metalprices.
A world leader in innovative technologies manufacturing gas turbine and airframe components from such exotic materials as titanium, columbium and inconel, GKN Chem-tronics provides and repairs critical components for military and commercial aviation, as well as space launch vehicle applications.
The major product segments analyzed are Non-Ferrous Alloys (Aluminum, Magnesium, Titanium, and Zirconium), Refractory Metal Alloys (Molybdenum, Tungsten, Columbium, and Tantalum), Platinum Group Metals (Platinum, Palladium, Rhodium, Ruthenium, and Iridium), and Special Alloys & Superalloys.
Lawrence Columbium abandoned mine site, which was closed in the mid-70s, and to build a drinking water system to supply property owners who might be impacted by mine's operations.