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Information @ a Glance

Contents on the CD Rom

  • Hafnium is a chemical element that has the symbol Hf and atomic number 72. A lustrous, silvery gray tetravalent transition metal, hafnium resembles zirconium chemically and it is found in zirconium minerals.
  • Hafnium is used in tungsten alloys in filaments and electrodes, in integrated circuits as a gate insulator for transistors, and as a neutron absorber in control rods in nuclear power plants.
  • Hafnium is estimated to make up about 0.00058% of the Earth's upper crust by weight. It is found combined in natural zirconium compounds but it does not exist as a free element in nature.
  • Minerals that contain zirconium, such as alvite [(Hf, Th, Zr)SiO4 H2O], thortveitite, and zircon (ZrSiO4), usually contain between 1 and 5% hafnium.
  • Hafnium and zirconium have nearly identical chemistry, which makes the two difficult to separate.
    About half of all hafnium metal manufactured is produced as a by-product of zirconium refinement.
  • This is done through reducing hafnium chloride with magnesium or sodium in the Kroll process.
  • Hafnium is found in various alloyed and unalloyed forms such as plate, strip, sheet, rod, wire and tube – similar to zirconium metal.
  • Hafnium is used to make control rods for nuclear reactors because of its ability to absorb neutrons , excellent mechanical properties and exceptional corrosion-resistance properties.
  • Hafnium is used in gas-filled and incandescent lamps, for scavenging oxygen and nitrogen.
  •  A hafnium-based compound is employed in gate insulators in the 45 nm generation of integrated circuits from Intel, IBM and others.
  • Hafnium oxide-based compounds are practical high-k dielectrics, allowing reduction of the gate leakage current which improves performance at such scales.
  • DARPA has been intermittently funding programs in the US to determine the possibility of using a nuclear isomer of hafnium to construct small, high yield weapons with simple x-ray triggering mechanisms—an application of induced gamma emission.
  • Small additions of hafnium increase the adherence of protective oxide scales on nickel based alloys.

 

General Information

  • Information about Hafnium
  • Hafnium Fact Sheet
  • Description about Hafnium
  • Periodic table of Hafnium
  • eHafnium.com

Company Profile

  • Company from Beijing
  • Company from China
  • Company from NewJersey
  • Company from USA

Consultant

  • Consultant from Denmark
  • Consultant from Lasvegas
  • Consultant from Mexico
  • Consultant from Missouri
  • Consultant from UnitedKingdom

Suppliers

  • Selling leads of Hafnium
  • Tradeleads of Hafnium
  • Hafnium suppliers
  • Hafnium Manufacturers

Products

  • Hafnium TetraChloride
  • Hafnium Ingot
  • Hafnium oxide
  • Hafnium powder

Patent

  • Zirconium and hafnium separation in chloride solutions using continuous ion exchange chromatography
  • Thin Hafnium oxide film and method for depositing same
  • Thin layer of hafnium oxide and deposit process
  • Zirconium and hafnium separation in sulfate solutions using continuous ion exchange chromatography

Production

  • Domestic survey data of Hafnium in 2000
  • Domestic survey data of Hafnium in 2001
  • Domestic survey data of Hafnium in 2002
  • Domestic survey data of Hafnium in 2003
  • Domestic survey data of Hafnium in 2005
  • Domestic survey data of Hafnium in 2006

 

MSDS
  • Hafnium Hydride
  • Hafnium Oxide
  • Hafnium Silicide
  • Hafnium Standard Solution
  • Tetrakis(dimethylamino)hafnium
  • Hafnium 1000 ppm A/S standard

Process & Properties

  • Extraction of short-lived zirconium and hafnium isotopes using crown ethers
  • Atomic Layer Deposition of Hafnium Silicate Thin Films Using HfCl2[N(SiMe3)2.]2 and H2O
  • Equation of state of cubic hafnium(IV) nitride having Th3P4-type structure
  • Hydrogen Concentration Dependence of Mechanical Properties and Electronic Structures for Hafnium Hydrides and Deuterides
  • Hafnium oxide composition
  • Tensile and Stress-Rupture Behavior of Hafnium Carbide Dispersed Molybdenum and Tungsten Base Alloy Wires
  • Thermal behavior of hafnium-based ultrathin films on silicon
  • Thin Hafnium oxide thickness, composition and uniformity measurements by XPS

Commodity Profile

  • Domestic Production and Use of Hafnium in 2000
  • Domestic Production and Use of Hafnium in 2001
  • Domestic Production and Use of Hafnium in 2002
  • Domestic Production and Use of Hafnium in 2003
  • Domestic Production and Use of Hafnium in 2004
  • Domestic Production and Use of Hafnium in 2005
  • Domestic Production and Use of Hafnium in 2006
  • Domestic Production and Use of Hafnium in 2007
  • Domestic Production and Use of Hafnium in 2008

Market & Report

  • Hafnium Market
  • Corrosion of Hafnium and Hafnium Alloys
  • High hafnium zircon from Norway
  • Electronic structure of hafnium
  • Hafnium Report

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