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Discovery of tantalum

The metal was discovered in 1802 by Anders G. Ekeberg, a professor at Uppsala University, Sweden, in the mineral tantalite from Finland and yttrotrans tantalite from Sweden. In 1809, however, the famous English chemist William Wallaston stated that there was no discovery because Ekeberg had isolated niobium, which had also been discovered in 1802. The scientific community concluded that Wallaston was right, and Ekeberg's discovery was declared a mistake. And the fact is that niobium is very difficult to separate from tantalum, It was not until 1846 that German mineralogist Heinrich Rose finally proved that these metals are different elements. In 1903, Werner von Bolton first refined the tantalum metal.

The name

The name of the element comes from the Greek mythological character Tantalos. Niobe (niobium) was the daughter of Tantalos. Ekeberg gave his new element the name tantalum because it was, as he stated, a "tantalizing" element. It is a shiny, gray, dense metal, very malleable, nontoxic, and can be rolled into thin wire or foil. Buy any rare earth metals at the manufacturer's price offers the company Evek GmbH. The supplier guarantees delivery of products to any destination.

Geology

The tantalum content in the Earth's crust is 1.7 parts per million by weight, 0.2 parts per million in terms of moles. This metal does not occur in free form, and is mined from minerals such as columbite and tantalite. These minerals often also contain niobium. Commercially, tantalum is first extracted by forming an oxide (_{Ta2 O5}). The oxide is then reduced using carbon or hydrogen. Tantalum has 31 isotopes (whose half-lives are known), with mass numbers ranging from 156 to 186. Naturally occurring tantalum consists of the stable isotope ¹⁸¹ Ta.

Properties of tantalum.

The chemical properties of this metal are very similar to those of niobium. Tantalum is highly corrosion resistant due to the formation of an oxide film. It is an excellent conductor of heat and electricity. The metal has high wear resistance and a very high melting point. Only tungsten and rhenium are superior in refractoriness.

Applications

Electronics industry, high-capacitance capacitors and power resistors. Alloying of alloys of high strength, ductility and corrosion resistance. This metal is used in dental and surgical instruments and implants because it does not cause immune rejection.

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