Por qué importa para los materiales
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.
De qué está compuesto
Todos los materiales →| Material | Lo que hace aquí | Importancia |
|---|---|---|
| Aluminium crítico | Airframe skin and structure | Definición de |
| Cobalt crítico | Superalloy binder and magnets | Definición de |
| Gallium crítico | Radar transmit-receive modules | Definición de |
| Hafnium crítico | Superalloy and control rods | Definición de |
| Nickel crítico | Superalloy for hot sections | Definición de |
| Rhenium crítico | Single-crystal superalloy | Definición de |
| Titanium crítico | Airframe and engine structure | Definición de |
| Antimony crítico | Ammunition primers and flame retardants | Importante |
| Beryllium crítico | Optics and inertial guidance | Importante |
| Germanium crítico | Infrared optics | Importante |
| Samarium crítico | High-temperature magnets | Importante |
| Tantalum crítico | Superalloy and capacitors | Importante |
| Tungsten crítico | Penetrators and counterweights | Importante |
| Yttrium crítico | Thermal barrier coatings | Importante |
| Scandium crítico | 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…
