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Aiming at the contradiction between the lubricating performance and mechanical performance of self-lubricating ceramic tools. CaF 2 @Al(OH) 3 particles were prepared by the heterogeneous nucleation method. An Al 2 O 3 /Ti(C,N) ceramic tool with CaF 2 @Al 2 (OH) 3 particles and ZrO 2 whiskers was prepared by hot press sintering (frittage). The cutting performances and wear mechanisms of this ceramic tool were investigated. Compared with the Al 2 O 3 /Ti(C,N) ceramic tool, the Al 2 O 3 /Ti(C,N)/ZrO 2 /CaF 2 @Al(OH) 3 ceramic tool had lower cutting temperatures and surface roughness. When the cutting speed was increased from 100m/min to 300m/min, a lot of CaF 2 was smeared onto the surface of the ceramic tool, and the flank wear of the Al 2 O 3 /Ti(C,N)/ZrO 2 /CaF 2 @Al(OH) 3 ceramic tool was reduced. The main wear mechanisms of the Al 2 O 3 /Ti(C,N)/ZrO 2 /CaF 2 @Al(OH) 3 ceramic tool were adhesive wear and micro-chipping. The formation of solid lubricating film and the improvement of fracture toughness by adding ZrO 2 whiskers and CaF 2 @Al(OH) 3 were important factors for the Al 2 O 3 /Ti(C,N)/ZrO 2 /CaF 2 @Al(OH) 3 ceramic tool to have better cutting performances.

Preparation of Al2O3/Ti(C,N)/ZrO2/CaF2@Al(OH)3 Ceramic Tools and Cutting Performance in Turning