Open Access

Table 1

Comparison between the oxide ceramic Al2O3/ZrO2 and Al2O3/TiC composite [22].

Cutting materials Oxide ceramic Al2O3 + ZrO2 Al2O3/TiC composite
Hardness (Vickers) 2000 2200
Modulus of elasticity (KN/mm2) 390 400
Bending strength (N/mm2) 350 600
Fracture toughness (mN/mm2) 4.5 5.4
Coefficient of thermal expansion (10−6K−1) 7.5 7.0
Thermal conductivity (W m−1 K−1) 30 35

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