hafnium


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Related to hafnium: Hafnium carbide

haf·ni·um

 (hăf′nē-əm)
n. Symbol Hf
A brilliant, silvery, metallic element separated from ores of zirconium and used in nuclear reactor control rods, as a getter for oxygen and nitrogen, and in tungsten filament alloys. Atomic number 72; atomic weight 178.49; melting point 2,233°C; boiling point 4,603°C; specific gravity 13.31; valence 4. See Periodic Table.

[After Hafnia, Medieval Latin name for Copenhagen, Denmark.]

hafnium

(ˈhæfnɪəm)
n
(Elements & Compounds) a bright metallic element found in zirconium ores: used in tungsten filaments and as a neutron absorber in nuclear reactors. Symbol: Hf; atomic no: 72; atomic wt: 178.49; valency: 4; relative density: 13.31; melting pt: 2231±20°C; boiling pt: 4603°C
[C20: New Latin, named after Hafnia, Latin name of Copenhagen + -ium]

haf•ni•um

(ˈhæf ni əm, ˈhɑf-)

n.
a toxic metallic element found in most zirconium minerals. Symbol: Hf; at. wt.: 178.49; at. no.: 72; sp. gr.: 12.1.
[1923; < New Latin Hafn(ia) Copenhagen + -ium2]

haf·ni·um

(hăf′nē-əm)
Symbol Hf A bright, silvery metallic element that occurs in zirconium ores. Because hafnium absorbs neutrons better than any other metal and is resistant to corrosion, it is used to control nuclear reactions. Atomic number 72. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hafnium - a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium mineralshafnium - a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Translations
hafnium
hafnium
hafnio
hafnium
hafnium
hafnium
hafnij
hafnium
hafnín
ハフニウム
hafnium
hafnis
hafnium
hafn
háfnio
hafniu
hafnium
hafnij
hafnium
hafniyum

hafnium

[ˈhæfnɪəm] Nhafnio m

hafnium

n (Chem) → Hafnium nt
References in periodicals archive ?
Even though there are several reports on the biological application of Hafnium oxide nanoparticles, to the best of our knowledge, till date, no study has been reported on the interaction studies of hafnium oxide nanoparticle with human serum albumin.
Titanium will be used as a representative to hafnium as it is more stable for laboratory conditions.
The Temagami Banded Iron Formation, which was formed 2,700 million years ago during the Neoarchean period, can be used as an archive because the isotopic composition of many chemical elements such as Hafnium and Neodymium directly mirrors the composition of Neoarchean seawater.
By analyzing patents granted at USPTO in hafnium field (a new nanomaterial) we want to know how the entrepreneurs, government and institutions are concern to innovate in this field and how the knowledge flows are manifested at the inventors level.
Keywords Hafnium carbide, Hard coatings, Microstructure, Mechanical properties, Magnetron sputtering
HfSiON, nitrided hafnium silicate, is recognized as a promising material, but there are few reports of any practical fabrication process that can be applied to mass production.
This process led to the quick discovery of the new amide-ether based hafnium catalysts; "Single-site, non-metallocene catalysts is a developing area and one that holds great promise for polyolefins research and development.
As Its name Implies, electron-beam evaporation proceeds by heating the surface of a suitable material - often silicon dioxide or hafnium dioxide - to cause it to melt and then evaporate into a high-vacuum chamber containing a substrate to be coated.
It is not a particularly rare element, but it is very like zirconium, which is just above it in the periodic table, and it is never found except in association with zirconium, which is fifty times as common, so that hafnium is hard to separate out.
Our products include titanium and titanium alloys, nickel-based alloys and superalloys, grain-oriented electrical steel, stainless and specialty steels, zirconium, hafnium, niobium, tungsten materials, forgings, castings, and fabrication and machining capabilities.
02 to 1 g/L, calculated on the basis of the corresponding silanols; at least one compound b containing at least one of titanium, hafnium, zirconium, aluminum or boron, at least one of which compounds is a complex fluoride, wherein the content of compound b in the composition ranges from 0.
Dauphas and Pourmand were able to refine the age of Mars by using the radioactive decay of hafnium to tungsten in meteorites.