A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. (wikipedia.org)
Hafnium is a shiny, silvery, ductile metal that is corrosion-resistant and chemically similar to zirconium in that they have the same number of valence electrons and are in the same group. (wikipedia.org)
Hafnium changes from its alpha form, a hexagonal close-packed lattice, to its beta form, a body-centered cubic lattice, at 2388 K. The physical properties of hafnium metal samples are markedly affected by zirconium impurities, especially the nuclear properties, as these two elements are among the most difficult to separate because of their chemical similarity. (wikipedia.org)
A notable physical difference between these metals is their density, with zirconium having about one-half the density of hafnium. (wikipedia.org)
Like its sister metal zirconium, finely divided hafnium can ignite spontaneously in air. (wikipedia.org)
As a consequence of lanthanide contraction, the chemistry of hafnium and zirconium is so similar that the two cannot be separated on the basis of differing chemical reactions. (wikipedia.org)
The heavy mineral sands ore deposits of the titanium ores ilmenite and rutile yield most of the mined zirconium, and therefore also most of the hafnium. (wikipedia.org)
However, because of hafnium's neutron-absorbing properties, hafnium impurities in zirconium would cause it to be far less useful for nuclear-reactor applications. (wikipedia.org)
Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. (viking.nu)
Hafnium is generally produced as a byproduct while refining zirconium. (periodictableguide.com)
Niobium1
Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten. (wikipedia.org)
George de Hev1
Hafnium was discovered by George de Hevesy and Dirk Coster (in 1922). (periodictableguide.com)
Periodic3
In fact, the table mentioned below is the perfect information box (Which gives you every single detail about the Hafnium element in Periodic table. (periodictableguide.com)
Hafnium Sputtering Target can be used in semiconductor, chemical vapor deposition (CVD), physical vapor deposition (PVD) display, and optical applications. (heegermaterials.com)
We are a supplier of high-quality Hafnium Sputtering Target at competitive prices. (heegermaterials.com)
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We can provide Hafnium Sputtering Target with different purity, size, and density according to your requirements. (heegermaterials.com)
Hafnium Sputtering Target is mainly used in the electronics and information industry, glass coating field, wear-resistant materials, high-temperature corrosion resistance, high-grade decorative goods, and other industries. (heegermaterials.com)
Stanford Materials Corporation (SMC) specializes in producing high purity Yttrium Manganate Sputtering Target with the highest possible density and smallest possible average grain sizes. (stanfordmaterials.com)
Latin1
Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered. (wikipedia.org)
The most notable nuclear properties of hafnium are its high thermal neutron capture cross section and that the nuclei of several different hafnium isotopes readily absorb two or more neutrons apiece. (wikipedia.org)
At least 40 isotopes of hafnium have been observed, ranging in mass number from 153 to 192. (wikipedia.org)
Lanthanum2
Lanthanide contraction is the greater-than-expected decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to atomic number 71, lutetium, resulting in smaller-than-expected ionic radii for the subsequent elements beginning with 72, hafnium. (thechemistrynotes.com)
The radius of the lighter lutetium ion, Lu 3+ , is 0.850 angstroms, compared to 1.061 angstroms for the lanthanum ion, La 3+ . (thechemistrynotes.com)
Yttrium1
Unusual doublet structure in proton magnetic-resonance spectra of yttrium and lutetium trihydrides. (mpg.de)
Lead's high density, low melting point, ductility , and relative inertness to oxidation make it useful. (wikiversity.org)
Properties1
S. M. Lang, Properties of High-Temperature Ceramics and Cermets, Elasticity and Density at Room Temperature, Monograph 6, National Bureau of Standards, Washington, D.C. (1960). (nist.gov)
Melting point1
7,214 °F). Recent supercomputer simulations suggest a hafnium alloy with a melting point of 4,400 K. (kranite.com)
Elements1
Hafnium is not found free in nature, but it is always found as a compound with other elements. (periodictableguide.com)
Hafnium is a chemical element with the symbol Hf and atomic number 72. (wikipedia.org)
How does the atomic mass determine the density of materials? (nuclear-power.com)
Cubic1
Hafnium changes from its alpha form, a hexagonal close-packed lattice, to its beta form, a body-centered cubic lattice, at 2388 K. The physical properties of hafnium metal samples are markedly affected by zirconium impurities, especially the nuclear properties, as these two elements are among the most difficult to separate because of their chemical similarity. (wikipedia.org)
Metals2
A notable physical difference between these metals is their density, with zirconium having about one-half the density of hafnium. (wikipedia.org)
Samarium (Sm) is a silver metal whose density is 7.54g/cm3, Heeger Materials (HM) is a trusted manufacturer of Samarium metals. (heegermaterials.com)
Mass4
At least 40 isotopes of hafnium have been observed, ranging in mass number from 153 to 192. (wikipedia.org)
Hafnium is estimated to make up about 5.8 ppm of the Earth's upper crust by mass. (wikipedia.org)
Density is defined as the mass per unit volume . (nuclear-power.com)
In other words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. (nuclear-power.com)
Temperature1
Spectral lines also depend on the temperature and density of the material, so they are widely used to determine the physical conditions of stars and other celestial bodies that cannot be analyzed by other means. (wikipedia.org)
Good1
Spherical Chromium (Cr) Powder has the characteristics of high sphericity, good fluidity, high purity, large loose density, full density inside particles, no hollow powder, and so on. (heegermaterials.com)
A major source of zircon (and hence hafnium) ores is heavy mineral sands ore deposits, pegmatites, particularly in Brazil and Malawi, and carbonatite intrusions, particularly the Crown Polymetallic Deposit at Mount Weld, Western Australia. (wikipedia.org)
The heavy mineral sands ore deposits of the titanium ores ilmenite and rutile yield most of the mined zirconium, and therefore also most of the hafnium. (wikipedia.org)
Weight1
The Flood doesn't "know" how to deposit anything, it just did it's thing, move, and the sediments would settle according to weight and density. (evcforum.net)