Abstract
We introduced a novel strategy for direct joining Ti3AlC2 ceramics in air without the need for any interlayer and vacuum/ inert gas protection. This was achieved by applying constant external pressure to manipulate the amount of available oxygen for oxidation at the Ti3AlC2―Ti3AlC2 interface. The shear strength of the joints bonded under a pressure of 10 MPa was approximately 3 times higher than that without pressure. The joining mechanisms were addressed based on the atomic interdiffusion and preferential oxidation of Al in lamellar Ti3AlC2 grains.
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