Skip navigation Accessibility information

Afnio ( Hf ) - Foglio   -   Informazioni sul Materiale


Buy Afnio Foglio 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 Foglio - Prodotti Standard   Click here to display prices
HF000090Afnio Foglio,    
Spessore:0,003 mm, Purezza:97,0 %
HF000100Afnio Foglio,    
Spessore:0,004 mm, Purezza:97,0 %
HF000110Afnio Foglio,    
Spessore:0,005 mm, Purezza:97,0 %
HF000120Afnio Foglio,    
Spessore:0,006 mm, Purezza:97,0 %
 
HF000130Afnio Foglio,    
Spessore:0,007 mm, Purezza:97,0 %
HF000140Afnio Foglio,    
Spessore:0,008 mm, Purezza:97,0 %
HF000150Afnio Foglio,    
Spessore:0,009 mm, Purezza:97,0 %
HF000160Afnio Foglio,    
Spessore:0,01 mm, Purezza:97,0 %
HF000170Afnio Foglio,    
Spessore:0,0125 mm, Purezza:97,0 %
 
HF000180Afnio Foglio,    
Spessore:0,015 mm, Purezza:97,0 %
HF000190Afnio Foglio,    
Spessore:0,02 mm, Purezza:97,0 %
HF000200Afnio Foglio,    
Spessore:0,025 mm, Purezza:97,0 %, Tempra:Ricotto
HF000205Afnio Foglio,    
Spessore:0,075 mm, Purezza:97,0 %, Tempra:Ricotto
HF000210Afnio Foglio,    
Spessore:0,125 mm, Purezza:97,0 %, Tempra:Ricotto
 
HF000214Afnio Foglio,    
Spessore:0,14 mm, Purezza:97,0 %, Tempra:Ricotto
HF000220Afnio Foglio,    
Spessore:0,25 mm, Purezza:97,0 %, Tempra:Ricotto
HF000230Afnio Foglio,    
Spessore:0,5 mm, Purezza:97,0 %, Tempra:Ricotto
HF000240Afnio Foglio,    
Spessore:1,0 mm, Purezza:97,0 %, Tempra:Ricotto
Afnio Foglio - 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