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American airlines has developed nano-nitride coatings

Under the support of the United States air force, NASA and the university of Pennsylvania found a kind of coating material which can promote the speed of flight. With this coating material, the plane may flight from the east coast to the west coast of United State in less than 1 hour the next 10 years.

Although, at present the unit price of boron nitride as high as $1000 per gram, people still can't afford to site after preliminary commercialization. The first wave of passenger list must be left to those merchants whose time equals money.

The key of  keeping the vehicle speeding is to withstand the intense heat generated during the journey. For example, the retired supersonic airliner Concorde, Can withstand up to 127 ℃ and  friction at an altitude of 15000 meters with the hard aluminum coating in a speed of Mach  2.02. Concorde's flight from London to New York took only about two hours and 53 minutes, which set the fastest flight record for a flight.In other words, the plane's material is the key to flying supersonic in addition to the stable fuselage structure and light weight.

Recently, NASA works with the university of Pennsylvania in the study of supersonic aircraft and confirm to use boron nitride nanotube as the coating materials of fuselage.

Carbon nanotubes is a pipe shape Carbon molecules, due to the tensile strength and the resistance (temperature can withstand up to 400 ℃) , was applied to high-end aerospace or sports car. But now research shows that the boron nitride nanotubes can withstand up to 900 ℃ temperature, make aircraft flying at 6400 kilometers per hour, and lighter than carbon nanotubes. It is expected to be applied to commercial aircraft in ten years.

Boron nitride nanotubes material is first applied to fighter or space probe, but as long as 10 to 20 years, the experience of commercial air travel will be very different from today, become the standard of aircraft manufacturing materials. In addition to being applied to the surface of the aircraft, the nano-nitride boron can be added to ceramics or metals to make it stronger and may contribute to environmentally friendly automotive or nanoelectronics.

At present, the biggest problem with nano-nitride boron material is the price, which is $1,000 per gram, with such a high cost to produce the product is unrealistic. High quality carbon nanotubes in 20 years ago, however, also about the price, now costs only $10 - $20 per gram, Changhong Ke, associate professor, department of mechanical engineering at the university of Pennsylvania thinks, boron nitride nanotubes is also going to take a similar path. Now, NASA is one of the few organization which can produce high quality boron nitride nanotubes in the word. If there is more research on the performance of nano-nitride tubes, or NASA has a mass-production technology, prices will start to fall.