Abstract: A cutting member with coolant delivery that has a cutting member body with an axial forward end and an axial rearward end. The cutting member body has a shank portion adjacent the axial rearward end thereof and a cutting portion adjacent to the axial forward end. The cutting member body contains a coolant delivery passage wherein the coolant delivery passage comprises a primary cavity in the shank portion and a central coolant passage in the cutting portion and a plurality of lateral coolant passages in the cutting portion. The lateral coolant passages are a communication with the primary cavity through the central coolant passage. Each of the lateral coolant passages has an open end through which coolant exits the cutting member. The cutting portion is of a first grade of hard material, and the shank portion is of a second grade of hard material wherein the first grade of hard material is different from the second grade of hard material.

Abstract: A coated body that includes a substrate and a coating scheme on the substrate. The coating scheme on the substrate wherein the coating scheme includes an alpha-alumina coating layer that exhibits a platelet grain morphology at the surface of the alpha-alumina coating layer or a kappa-alumina coating layer that exhibits either a lenticular grain morphology or a polyhedra-lenticular grain morphology at the surface thereof or an alpha-kappa-alumina coating layer that exhibits either a large multifaceted grain morphology or a polyhedra-multifaceted grain morphology at the surface thereof.

Abstract: A coated body that includes a substrate and a coating scheme on the substrate. The coating scheme on the substrate wherein the coating scheme includes an alpha-alumina coating layer that exhibits a platelet grain morphology at the surface of the alpha-alumina coating layer or a kappa-alumina coating layer that exhibits either a lenticular grain morphology or a polyhedra-lenticular grain morphology at the surface thereof or an alpha-kappa-alumina coating layer that exhibits either a large multifaceted grain morphology or a polyhedra-multifaceted grain morphology at the surface thereof.

Abstract: A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiskers. The ceramic composite having a fracture toughness (KIC) of greater than about 4.0 MPam1/2. The ceramic has a silicon carbide whisker density as measured in whiskers per square millimeter equal to or less than about 1500 times the volume percent of silicon carbide whiskers, but in a density sufficient for the ceramic composite to have the fracture toughness.