Niobium Nb 99.9% bluish when oxidized

Model Number: GK-303 Brand Name: GENPHOAL Key Specifications/Special Features: Niobium and tantalum kin, physical and chemical properties are very similar, in nature often coexist together, scientists found that the initial time of niobium and tantalum even think they are a kind of element. Nb and Ta, is dear biological metal, can be implanted in the human body. High melting point, up to 2468 C, density 8.57 g / cubic centimeters, at room temperature is also very resistant to corrosion. Niobium is often used in high temperature alloy and hard alloy production, and very attract sb.'s attention is the application of niobium in superconducting alloys, superconducting phenomenon found that from 1911 to date, there have been many series of superconductor, and only Ni Jichao conductor developed into a mature product, due to the excellent performance, used in electromagnetic technology in the field of technology of super conductor almost invariably niobium based superconductors.Niobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. The name comes from Greek mythology: Niobe, daughter of Tantalus.Niobium has physical and chemical properties similar to those of the element tantalum, and the two are therefore difficult to distinguishEnglish chemist Charles Hatchett reported a new element similar to tantalum in 1801 and named it columbiumIn 1809, the English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identicalThe German chemist Heinrich Rose determined in 1846 that tantalum ores contain a second element, which he named niobiumIn 1864 and 1865, a series of scientific findings clarified that niobium and columbium were the same element (as distinguished from tantalum), and for a century both names were used interchangeablyNiobium was officially adopted as the name of the element in 1949, but the name columbium remains in current use in metallurgy in the United States