सामग्रियों के लिए यह क्यों महत्वपूर्ण है
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.
यह किससे बना है
सभी सामग्रियाँ →| सामग्री | यह यहाँ क्या करता है | महत्त्व |
|---|---|---|
| Aluminium क्रिटिकल | Airframe skin and structure | परिभाषित करना |
| Cobalt क्रिटिकल | Superalloy binder and magnets | परिभाषित करना |
| Gallium क्रिटिकल | Radar transmit-receive modules | परिभाषित करना |
| Hafnium क्रिटिकल | Superalloy and control rods | परिभाषित करना |
| Nickel क्रिटिकल | Superalloy for hot sections | परिभाषित करना |
| Rhenium क्रिटिकल | Single-crystal superalloy | परिभाषित करना |
| Titanium क्रिटिकल | Airframe and engine structure | परिभाषित करना |
| Antimony क्रिटिकल | Ammunition primers and flame retardants | महत्त्वपूर्ण |
| Beryllium क्रिटिकल | Optics and inertial guidance | महत्त्वपूर्ण |
| Germanium क्रिटिकल | Infrared optics | महत्त्वपूर्ण |
| Samarium क्रिटिकल | High-temperature magnets | महत्त्वपूर्ण |
| Tantalum क्रिटिकल | Superalloy and capacitors | महत्त्वपूर्ण |
| Tungsten क्रिटिकल | Penetrators and counterweights | महत्त्वपूर्ण |
| Yttrium क्रिटिकल | Thermal barrier coatings | महत्त्वपूर्ण |
| Scandium क्रिटिकल | High-strength aluminium alloy | वर्तमान |
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…
