Preferences
CompanyGoodfellow Cambridge Ltd
LanguageEnglish (UK)
CurrencyGBP
Deliver toUnited Kingdom of Great Britain and Northern Ireland

Preferences

GBP
    Total:
     
     Product(s)  Item(s)
    Log In | Register
    • Hafnium - Rod

      Discovered in 1923 by D. Coster and G.C. von Hevesey in Copenhagen, Denmark. Hafnium is a silvery coloured, ductile metal which is found in all minerals containing zirconium. The chemistries of the two metals are similar which makes them difficult to separate, and the properties of each are greatly affected by the presence of the other as an impurity. Both zirconium and hafnium are extracted as the pure metal by reducing the tetrahalide with magnesium, the whole process being carried out under argon as both metals readily combine with other gases (e.g. nitrogen). The abundance of hafnium in the earth's crust is 5.3 ppm. Hafnium will resist corrosion in air due to the formation of an oxide film, although powdered hafnium will burn in air. It is unaffected by alkalis and acids, with the exception of HF. Hafnium can be used to control recrystallisation of tungsten filaments but its main application is as control rod material in nuclear reactors due to its ability to absorb neutrons. The ability of hafnium to absorb neutrons means that it can sometimes be an annoying impurity in zirconium metal which is used for nuclear engineering.Rod - A straight length of circular section material.

    3 results

    Product
    Product HF00-RD-000100 Hafnium - Rod Diameter 1.6mm Temper As Drawn Length 100mm - 1000mm Purity 97.0%
    Product HF00-RD-000102 Hafnium - Rod Diameter 2mm Temper As Drawn Length 100mm - 1000mm Purity 97.0%
    Product HF00-RD-000110 Hafnium - Rod Diameter 5mm Temper As Drawn Length 25mm - 200mm Purity 97.0%
    Sorry – Your selected filters returned no results.

    Please try a different filter selection or choose from one of the following product types below:

    Sorry, but you need to update your browser to use our website.

    We apologise for any inconvenience this may cause and thanks for your patience.

    To place a phone order:
    US:1 800 821 2870
    UK: 0800 731 4653

    Customer Support: info@goodfellow.com

    Thank you
    The Goodfellow Team

    Speak to one of our experts

    0800 731 4653 (UK)

    Our telephone lines are open Monday to Friday from 8am - 5pm.

    To speak to one of our international offices click here.

    You can also arrange a callback by clicking here.