Definitions for niobium
naɪˈoʊ bi əmnio·bi·um

Princeton's WordNetRate this definition:0.0 / 0 votes

1. niobium, Nb, atomic number 41noun

   a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

WiktionaryRate this definition:0.0 / 0 votes

1. niobiumnoun

   a metallic chemical element (symbol Nb) with an atomic number of 41.

2. Etymology: After Niobe, because of the element's affinity with tantalum.

WikipediaRate this definition:0.0 / 0 votes

1. Niobium

   Niobium is a chemical element with chemical symbol Nb (formerly columbium, Cb) and atomic number 41. It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium, and it has similar ductility to iron. Niobium oxidizes in Earth's atmosphere very slowly, hence its application in jewelry as a hypoallergenic alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite, hence the former name "columbium". Its name comes from Greek mythology: Niobe, daughter of Tantalus, the namesake of tantalum. The name reflects the great similarity between the two elements in their physical and chemical properties, which makes them difficult to distinguish.English chemist Charles Hatchett reported a new element similar to tantalum in 1801 and named it columbium. In 1809, English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identical. German chemist Heinrich Rose determined in 1846 that tantalum ores contain a second element, which he named niobium. In 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 interchangeably. 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. Brazil is the leading producer of niobium and ferroniobium, an alloy of 60–70% niobium with iron. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas pipelines. Although these alloys contain a maximum of 0.1%, the small percentage of niobium enhances the strength of the steel by scavenging carbide and nitride. The temperature stability of niobium-containing superalloys is important for its use in jet and rocket engines. Niobium is used in various superconducting materials. These alloys, also containing titanium and tin, are widely used in the superconducting magnets of MRI scanners. Other applications of niobium include welding, nuclear industries, electronics, optics, numismatics, and jewelry. In the last two applications, the low toxicity and iridescence produced by anodization are highly desired properties. Niobium is considered a technology-critical element.

ChatGPTRate this definition:0.0 / 0 votes

1. niobium

   Niobium is a chemical element with the symbol Nb and atomic number 41. It is a soft, grey, ductile transition metal, often found in the minerals pyrochlore and columbite. Niobium is used in alloys for enhanced strength. It resists corrosion due to an oxide layer on its surface, making it useful in technological applications requiring high temperature resistance and in superconducting materials.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Niobiumnoun

   a later name of columbium. See Columbium

2. Etymology: [NL., fr. L. & E. Niobe.]

WikidataRate this definition:0.0 / 0 votes

1. Niobium

   Niobium, formerly columbium, is a chemical element with the symbol Nb 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 distinguish. The English chemist Charles Hatchett reported a new element similar to tantalum in 1801 and named it columbium. In 1809, the English chemist William Hyde Wollaston wrongly concluded that tantalum and columbium were identical. The German chemist Heinrich Rose determined in 1846 that tantalum ores contain a second element, which he named niobium. In 1864 and 1865, a series of scientific findings clarified that niobium and columbium were the same element, and for a century both names were used interchangeably. Niobium was officially adopted as the name of the element in 1949. It was not until the early 20th century that niobium was first used commercially. Brazil is the leading producer of niobium and ferroniobium, an alloy of niobium and iron. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas pipelines. Although alloys contain only a maximum of 0.1%, that small percentage of niobium improves the strength of the steel. The temperature stability of niobium-containing superalloys is important for its use in jet and rocket engines. Niobium is used in various superconducting materials. These superconducting alloys, also containing titanium and tin, are widely used in the superconducting magnets of MRI scanners. Other applications of niobium include its use in welding, nuclear industries, electronics, optics, numismatics and jewelry. In the last two applications, niobium's low toxicity and ability to be colored by anodization are particular advantages.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Niobium

   nī-ō′bi-um, n. a rare metal, steel-gray in colour, discovered in the mineral Tantalite—sometimes called Columbium.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Niobium

   Niobium. A metal element atomic number 41, atomic weight 92.906, symbol Nb. (From Dorland, 28th ed)

Editors ContributionRate this definition:0.0 / 0 votes

1. niobium

   An element.

   In the early 20th century niobium was first used commercially. Brazil is the leading producer of niobium and ferroniobium, an alloy of niobium and iron. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas pipelines.

   
   

   Submitted by MaryC on May 22, 2016  

Matched Categories

1. • Metallic Element

How to pronounce niobium?

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Numerology

1. Chaldean Numerology

   The numerical value of niobium in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of niobium in Pythagorean Numerology is: 2

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=niobium
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Niobium
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Niobium
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/niobium
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=niobium
7. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=niobium