Perché è rilevante per i materiali
An aero-engine turbine blade sits in gas hotter than the alloy's melting point and survives because of rhenium, hafnium and a ceramic coating. That is why a few tonnes of a by-product metal can be a national-security question.
Di cosa è composto
Tutti i materiali →| Materiale | Cosa fa qui | Importanza |
|---|---|---|
| Aluminium critico | Airframe skin and structure | Definizione di |
| Cobalt critico | Superalloy binder and magnets | Definizione di |
| Gallium critico | Radar transmit-receive modules | Definizione di |
| Hafnium critico | Superalloy and control rods | Definizione di |
| Nickel critico | Superalloy for hot sections | Definizione di |
| Rhenium critico | Single-crystal superalloy | Definizione di |
| Titanium critico | Airframe and engine structure | Definizione di |
| Antimony critico | Ammunition primers and flame retardants | Importante |
| Beryllium critico | Optics and inertial guidance | Importante |
| Germanium critico | Infrared optics | Importante |
| Samarium critico | High-temperature magnets | Importante |
| Tantalum critico | Superalloy and capacitors | Importante |
| Tungsten critico | Penetrators and counterweights | Importante |
| Yttrium critico | Thermal barrier coatings | Importante |
| Scandium critico | High-strength aluminium alloy | Presente |
Aluminium
A light silvery metal made by passing an enormous electric current through dissolved bauxite — which is why people…
Cobalt
A hard, bluish metal that keeps a battery's cathode stable so it does not overheat, and that holds its strength when…
Gallium
A silvery metal that melts in your hand, and the basis of the compound semiconductors in fast chargers, radar and…
Hafnium
Zirconium's chemical shadow — always found with it, almost impossible to separate from it, and the opposite of it in…
Nickel
A silvery metal that resists rust, which is why it goes into stainless steel — and, more recently, into the cathodes…
Rhenium
One of the rarest metals in the crust, recovered from molybdenum roasting, and the ingredient that lets a jet turbine…
