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Good work hardenability, moderate to high strength of AA5052 alloy and high melting point and elastic modulus of Al3Zr with limited wear resistance have been the driving force to transmute Al3Zr/AA5052 composite by generations of ZrB2 nanoparticles. For this purpose, the varying amounts of ZrB2 particles in Al3Zr/AA5052 composite have been produced by direct melt reaction in situ technique. The phase...
Due to the poor lubricated performance of the low-viscosity lubricants (such as liquid oxygen and liquid hydrogen), the severe friction and wear of the seal’s pair for the high-speed turbopump in the cryogenic liquid rocket engine often occur, which may lead to the seal failure (excessive leakage or serious wear). For improving the tribological properties of the seal, the seal’s rotor with the micro-surface...
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