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Ниобий

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Акриловый кубик 25 мм. Ниобий (Nb). Nb acrylic cube 25x25x25 mm. Articul: ac41
1 700,00 ₽
Брелок 20х30 мм. Ниобий. Nb Keyring 20x30 mm. Articul: pt41
600,00 ₽
Брелок 20х40 мм. Кристалл ниобия (Nb). Niobium crystal keychain Articul: 1257220441
750,00 ₽
Брелок 20х40 мм. Ниобий (Nb) Nb keychain 20x40 mm. Articul: 41177
700,00 ₽
Брелок. Ниобий. Trinket. Niobium. Articul: 4117120420
550,00 ₽
Кубик из ниобия (Nb), 99,95%, 1 дюйм (25,4 мм) Niobium 99.95 (Nb) 1 inch cube Articul: 1inch41
7 500,00 ₽
Кулон. Анодированные ниобиевые цилиндры. Nb pendant with anodized cylinders
1 400,00 ₽
Кулон. Ниобий анодированный. Pendant. Anodized niobium.
1 150,00 ₽
Кулон. Ниобий. Pendant. Niobium. Articul: 4118120320
880,00 ₽
Niobium cube (Nb), 99.95, 10x10 mm. Articul: 41131140119
1 100,00 ₽
Ниобий в ампуле, 99% Niobium ampoule, 99%
1 200,00 ₽
Пуговица 18 мм. Ниобий. Nb. Chemical button 18 mm. Articul: but41
340,00 ₽
Ниобий

 
Atomic number     41
Atomic mass     92,906
Density, kg / m?   8400
Temperature
melting temperature, ° С       2468
 
Niobium is a shiny silver-white metal; covered with a bluish oxide film. Niobium was discovered in 1801 by the English scientist Charles Hatchet in a mineral sent back in 1734 to the British Museum from Massachusetts by John Winthrop (grandson of John Winthrop Jr.). The mineral was named columbite, and the chemical element was named "columbium" in honor of the country from which the sample was obtained - Colombia (at that time a synonym for the United States).
In 1802 A.G. Ekeberg discovered tantalum, which coincided in almost all chemical properties with niobium, and therefore for a long time it was believed that this is one and the same element. It was only in 1844 that the German chemist Heinrich Rose established that it was a different element from tantalum and renamed it “niobium” in honor of Tantalus's daughter Niobe, thereby emphasizing the similarity between the elements. However, in some countries (USA, England) the original name of the element - Colombium - remained for a long time.
For the first time, pure niobium was obtained at the end of the 19th century by the French chemist Henri Moissant electrothermally, reducing niobium oxide with carbon in an electric furnace.
 

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