Waarom het voor materialen van belang is
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.
Waaruit het bestaat
Alle materialen →| Materiaal | Wat het hier doet | Belang |
|---|---|---|
| Aluminium kritiek | Airframe skin and structure | Definiëren |
| Cobalt kritiek | Superalloy binder and magnets | Definiëren |
| Gallium kritiek | Radar transmit-receive modules | Definiëren |
| Hafnium kritiek | Superalloy and control rods | Definiëren |
| Nickel kritiek | Superalloy for hot sections | Definiëren |
| Rhenium kritiek | Single-crystal superalloy | Definiëren |
| Titanium kritiek | Airframe and engine structure | Definiëren |
| Antimony kritiek | Ammunition primers and flame retardants | Belangrijk |
| Beryllium kritiek | Optics and inertial guidance | Belangrijk |
| Germanium kritiek | Infrared optics | Belangrijk |
| Samarium kritiek | High-temperature magnets | Belangrijk |
| Tantalum kritiek | Superalloy and capacitors | Belangrijk |
| Tungsten kritiek | Penetrators and counterweights | Belangrijk |
| Yttrium kritiek | Thermal barrier coatings | Belangrijk |
| Scandium kritiek | High-strength aluminium alloy | Heden |

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…
