Rhenium a key metal in aircraft engines

Rhenium is widely used in jet and rocket engines, and about 80 per cent of the world's rhenium is used in aircraft engines, making it strategically important. To maintain its dominance in the aviation industry, the United States and other Western countries have for years imposed material and technology blockades on China. For a long time, aero-engine has been a short board in our aviation industry.

As the "first key" part of aviation products, single crystal blade in aero-engine directly determines the performance of aero-engine in the position with the highest temperature, the most complex stress and the most severe environment. The core of a 1,000kg engine is 60 single-crystal blades. The engine compresses the air into the combustion chamber, where it burns the fuel in a limited space, producing a violent gas jet that spins the blades at high speed and explodes with a power equivalent to that of a 2.0-displacement off-road car. It is understood that a 1000kg engine, high pressure speed is close to 40,000 revolutions per minute, the approximate tangential speed is 450 meters per second, the temperature is about 1720℃.Therefore, the production of single crystal blade, inseparable from the rare metal Rhenium.