Browse TRAIL Inventories

Separation of chloride vapors during ilmenite chlorination

Separation of tantalum from columbium by the hydrofluoric acid-sulfuric acid-methyl isobutyl ketone system

Effects of interstitial impurity levels on mechanical properties of columbium at low temperatures

Separating tantalum and columbium by solvent extraction :HF- HCl-Diethyl ketone system

Columbium and tantalum:a materials survey

Field test for columbium

Preparation of columbium and tantalum by metallic reduction of their chlorides

Electrorefining of columbium

X-ray spectrographic analysis for trace quantities of tantalum in columbium

Thermodynamic data for columbium (niobium) carbide

Analysis of high-purity columbium by optical emission spectrography

Extraction of tantalum and columbium from ores and concentrates by chlorination

Vapor pressures of liquid columbium (2,740⁰ to 3,140⁰ K) and liquid hafnium (2,500⁰ to 2,810⁰ K) / by R.K. Koch, W.E. Anable, and R.A. Beall.

Microflotation studies of some columbium-tantalum minerals


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