素材にとっての重要性
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.
その組成
全素材 →| 素材 | ここでの機能 | 重要度 |
|---|---|---|
| Aluminium クリティカル | Airframe skin and structure | 定義 |
| Cobalt クリティカル | Superalloy binder and magnets | 定義 |
| Gallium クリティカル | Radar transmit-receive modules | 定義 |
| Hafnium クリティカル | Superalloy and control rods | 定義 |
| Nickel クリティカル | Superalloy for hot sections | 定義 |
| Rhenium クリティカル | Single-crystal superalloy | 定義 |
| Titanium クリティカル | Airframe and engine structure | 定義 |
| Antimony クリティカル | Ammunition primers and flame retardants | 重要 |
| Beryllium クリティカル | Optics and inertial guidance | 重要 |
| Germanium クリティカル | Infrared optics | 重要 |
| Samarium クリティカル | High-temperature magnets | 重要 |
| Tantalum クリティカル | Superalloy and capacitors | 重要 |
| Tungsten クリティカル | Penetrators and counterweights | 重要 |
| Yttrium クリティカル | Thermal barrier coatings | 重要 |
| Scandium クリティカル | High-strength aluminium alloy | 現在 |
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…
