Effect of Mn content on the properties of TiC/TiB2 base cermets

The effects of Mn content on the microstructure and mechanical properties of TiC/TiB2 base cermets were studied with the compositions of TiC/TiB2–24Ni (mass%). The TiC and TiB2 ratio is set to a molar ratio of 57:43 that is near the quasi–eutectic composition. The cermet exhibits a microstructural refinement with an addition of Mn. Both transverse rupture strength and hardness of the cermet show maximum of 903 MPa and 92.6 HRA for the cermet containing 1.0 vol.% of Mn respectively.

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► We studied the effects of Mn content on TiC/TiB2 base cermets.
► The cermet shows a microstructural refinement with an addition of Mn.
► The sintering behavior shows at its best with 1.0 vol.% of Mn addition.
► Transverse rupture strength is 903 MPa and hardness is 92.6 HRA.