Αποτελέσματα Αναζήτησης
11 Οκτ 2024 · Niobium was first discovered (1801) in an ore sample from Connecticut by the English chemist Charles Hatchett, who called the element columbium in honour of the country of its origin, Columbia being a synonym for the United States.
- Tantalite
Tantalite, tantalum-rich variety of the mineral columbite...
- Tantalite
Niobium 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. It was not until the early 20th century that niobium was first used commercially. Niobium is an important addition to high-strength low-alloy steels.
1 Ιαν 2018 · In 1845, the German chemist Heinrich Rose (1845) discovered that Ta-rich minerals contained a second element he named niobium, after Niobe, the daughter of Greek mythological figure Tantalus, reflecting the extreme geochemical similarity between Nb and Ta.
29 Μαΐ 2018 · English chemist Charles Hatchett originally discovered niobium in 1801 while examining an ore sample obtained in Connecticut. Since the ore sample came from the United States , he named the unknown material columbium (at the time, Columbia was another name for America).
1 Οκτ 2015 · To Charles Hatchett (1765–1847), a self-educated scientist and first class analytical chemist, we owe the discovery of niobium, the analysis of a series of important minerals and animal substances such as shells, bones, dental enamel, a detailed study of bitumens, the separation of an artificial tanning material from mineral and animal sources.
Niobium was discovered by English chemist Charles Hatchett in 1801, Niobium is a soft, grey, ductile element classified amongst the transition elements of periodic table. It is used in making high-grade structural steel.
On This Day – November 26 : English chemist Charles Hatchett announced the discovery of columbium (Cb) to the Royal Society on this day in 1801. Bookmark. Now known as niobium (Nb), this metal element is very similar to tantalum (Ta), and was in fact confused with it during parts of the 19th century.
