Abradable sealing technique has been extensively used to realize the dynamic seal between rotating and stationary parts of the industrial aircraft engines, and it plays an important role in reducing the heat rate and increasing power output. The Al2024/hBN composite has been produced by hot-pressing sintering process, showing a high density of 2.52 g/cm3 and a Rockwell hardness value up to 90 HR15Y. After ball milling for 120h under an argon atmosphere, the composite’s microstructure significantly changes from spherical particle structure to lamellar structure, and the friction coefficient and volume wear rate reduce to 0.32 and 2.3*10-3 mm3/m*N, respectively. The maximum bending force increases from 1.2 kN to 2.3 kN in the three-point bending test at room temperature.
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