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British Developed 1500 Degree Of High Temperature Titanium Alloy Coating?

Source: British developed 1500 degree of high temperature titanium alloy coating?


Britain has developed a high temperature resistance (mainly for the main components of aluminum titanium alloy) of the metal coating technology, used to coat the "Elizabeth" aircraft carrier flight deck - known to be able to resist 1500 degrees of high temperature. The reason for this is that the gas of the tail nozzle will form a high temperature corrosion effect on the flight deck when the F-35B fighter plane is landing.


So for this news, we can put forward three questions: first, is F-35B and the carrier, it does not take into account the problem of high temperature damage to gas? Secondly, why is the use of aluminium and titanium alloys, it can block the temperature of 1500 degrees? Finally, this reform can provide a long time protection? The answer to the first question is considered, but the actual situation is much worse than the design. For F-35B, the VTOL power system had two choices; simple method is designed according to Jacques's 141, set the 1-2 table structure is simplified in the fuselage front (such as canceling afterburner, simplified Compressor Series) turbojet engine, providing vertical lift. The complex method, it is from the main engine with a complex driving mechanism, to drive the fan to blow up enough lift.


Only from the performance of the aircraft itself, Jacques's 141 way is simple, convenient and high - lift the engine working time is very short life requirement is not high things, the thrust can teach very terrible. But this route, in fact, is to use the complexity of the design and manufacture of warships and the flexibility to adapt to the venue for the price, in exchange for the performance of the aircraft itself. Because of the very high temperature gas lift engine, to bear Jacques 141 such aircraft taking off and landing, the flight deck itself must be heat resistant metal but also to the use of water circulation cooling, is actually made a particularly large paved carrier baffle. F-35B want to get around this problem, the lower performance, manufacturing is more complex and costly lift fan scheme; but the test results show that it does not completely solve the problem of high temperature jet landing deck still needs to be strengthened.


The answer to the second question is that the high aluminum content of titanium Aluminum Alloy on alumina protective film can be continuously formed stable on the surface, this is it for resist high temperature oxidation (corrosion problem of the British aircraft carrier deck is terrified of the key) and titanium fire (again, very active in the high temperature properties of titanium high temperature titanium alloy, is not inferior key advantage). As for the anti 1500 degrees or something, that is blown out; titanium alloy high temperature titanium alloy working temperature limit of 550 degrees for the watershed, to 600 degrees are the performance and price are very high grades. Besides the F-35B tail jet where to so high temperature, is Jacques 141 of the lift engine is not.


The answer to the third question, seemingly can be used for a long time, the alleged life can reach 50 years, the aircraft carrier service life without maintenance. It is about 10000 DEG C by plasma heating of metal powder, the melted metal forming droplets spread and rapid curing, 2.5 mm thick coating; laying area of 2000 square meters, accounting for about 10% of the total area of the flight deck


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