Warum es für Werkstoffe bedeutsam ist
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.
Woraus es besteht
Alle Materialien →| Material | Was es hier tut | Bedeutung |
|---|---|---|
| Aluminium kritisch | Airframe skin and structure | Definition |
| Cobalt kritisch | Superalloy binder and magnets | Definition |
| Gallium kritisch | Radar transmit-receive modules | Definition |
| Hafnium kritisch | Superalloy and control rods | Definition |
| Nickel kritisch | Superalloy for hot sections | Definition |
| Rhenium kritisch | Single-crystal superalloy | Definition |
| Titanium kritisch | Airframe and engine structure | Definition |
| Antimony kritisch | Ammunition primers and flame retardants | Wichtig |
| Beryllium kritisch | Optics and inertial guidance | Wichtig |
| Germanium kritisch | Infrared optics | Wichtig |
| Samarium kritisch | High-temperature magnets | Wichtig |
| Tantalum kritisch | Superalloy and capacitors | Wichtig |
| Tungsten kritisch | Penetrators and counterweights | Wichtig |
| Yttrium kritisch | Thermal barrier coatings | Wichtig |
| Scandium kritisch | High-strength aluminium alloy | Gegenwart |
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…
