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Hafnium

Hafnium is a heavy, steel-gray metal closely related to zirconium. General applications include nuclear reactor control rods, neutron absorption, alloy additive in various superalloys, and plasma torch welding tips.

 

Hafnium is available from ATI in common mill forms including plate, sheet, foil, rod, and wire. Hafnium metal is also available in a number of forms for alloying. For higher purity applications, crystal bar is available in chunk form (chopped bars), whole bars, or milled chips. Hafnium sponge is also available for standard alloying needs. ATI also produces hafnium powder, available in standard mesh sizes ranging from 80 - 325 mesh x down.

 

Hafnium is available in a number of different grades. Mill products conform to ASTM B776. Hafnium used for alloy addition comes in four different grades that depend on zirconium content.

• Hafnium
• Hafnium Oxide S Grade
• Hafnium Oxide Technical Grade
• Hafnium Oxychloride Reactor Grade
• Hafnium Oxynitrate Reactor Grade
• Hafnium Tetrachloride LZ Grade
• Hafnium Tetrachloride S Grade
• Hafnium Powder
• Hafnium Alloy Addition
• Hafnium Sponge
• Hafnium Crystal BaR

Hafnium is a chemical element with symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, making it the penultimate stable element to be discovered (rhenium was identified two years later). Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered.^[3][4]
Hafnium is used in filaments and electrodes. Some semiconductor fabrication processes use its oxide for integrated circuits at 45 nm and smaller feature lengths. Some superalloys used for special applications contain hafnium in combination withniobium, titanium, or tungsten.
Hafnium's large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors.

Additional Information:

• Item Code: 11898989
• Production Capacity: 1000 METRIC TONS
• Delivery Time: READY STOCK

Product Details:

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