Skip navigation Accessibility information

Afnio ( Hf ) - Filo   -   Informazioni sul Materiale


Buy Afnio Filo on-line

Standard products are available in these forms
Filo Foglio Pezzo grezzo Polvere Sputtering Target Tondino
Filo Foglio Pezzo grezzo Polvere Sputtering Target Tondino
General Description:  

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.

   
 

   

Dati Tecnici per   Afnio


Afnio Filo - Prodotti Standard   Click here to display prices
HF005105Afnio Filo,    
Diametro:0,125 mm, Purezza:97,0 %, Tempra:Come trafilato
HF005110Afnio Filo,    
Diametro:0,25 mm, Purezza:97,0 %, Tempra:Come trafilato
HF005120Afnio Filo,    
Diametro:0,5 mm, Purezza:97,0 %, Tempra:Come trafilato
HF005130Afnio Filo,    
Diametro:1,0 mm, Purezza:97,0 %, Tempra:Come trafilato
 
Afnio Filo - Prodotti Standard   Click here to display prices
Standard products are available in these forms
Filo Foglio Pezzo grezzo Polvere Sputtering Target Tondino
Filo Foglio Pezzo grezzo Polvere Sputtering Target Tondino

Index